Sensor

Product Overview Replace your failed NOx sensor with this premium aftermarket 5WK96687A Nitrogen Oxide (NOx) Sensor, precision-engineered for Audi Q7 TDI, Volkswagen Touareg TDI (2011-2015) (2011-2015) equipped with the 3.0L TDI V6 engine. This sensor delivers OE-comparable accuracy and response time at a fraction of dealership prices. Key Features Direct Plug-and-Play Replacement — No programming or calibration required. Uses the same 5-pin connector and thread pitch as the OEM sensor. Precision Sensing Element — Multi-layer ceramic sensing element provides accurate NOx concentration readings (±10 ppm accuracy) across the full operating temperature range. OEM-Grade Construction — High-temperature stainless steel housing with sealed electronics cavity protects against moisture, vibration, and thermal shock. Pre-Calibrated & Tested — Each sensor undergoes 100% functional testing before shipping, ensuring out-of-box readiness. 1-Year Warranty — Backed by our comprehensive warranty against manufacturing defects. Compatibility & Fitment This 5WK96687A NOx sensor is compatible with the following applications: Vehicle/Engine Year Range Engine Audi Q7 TDI, Volkswagen Touareg TDI (2011-2015) 2011-2015 3.0L TDI V6 Technical Specifications Specification Value Part Number 5WK96687A OE Reference Numbers 059907807J, 059907807A, 059907807C, 059907807E Sensor Type Nitrogen Oxide (NOx) — Downstream / Outlet Connector Type 5-pin Thread Size M20 x 1.5 (Standard NOx Sensor Thread) Operating Voltage 12V / 24V DC Measurement Range 0-3000 ppm NOx Brand iFJF Why Choose iFJF NOx Sensors? Save 50-70% vs. Dealer Pricing — Get OE-quality performance without the OE markup. Most dealer NOx sensors cost $400-$800+; ours deliver the same function at a fraction of the cost. Fleet-Tested Reliability — Our sensors are trusted by independent repair shops and fleet operators across North America for daily-use diesel vehicles. Fast Shipping from US Stock — Orders ship within 1 business day. No 2-4 week backorder delays common with dealer parts. No Core Charge — Unlike dealer replacement programs, there's no core deposit or return requirement. Installation Tips Safety First: Allow exhaust system to cool completely before beginning (NOx sensors reach 600°C+ during operation). Locate the Sensor: Find the sensor on the exhaust pipe near the SCR catalyst. Refer to vehicle service manual for exact location. Unplug & Remove: Disconnect the electrical connector, then use a 22mm or 7/8" oxygen sensor socket to unscrew the old sensor. Install New Sensor: Thread the new sensor by hand first to avoid cross-threading. Torque to 35-45 Nm (26-33 ft-lbs). Anti-seize is pre-applied on threads. Connect & Clear Codes: Plug in the electrical connector until it clicks. Use OBD-II scanner to clear any stored NOx-related fault codes. Test Drive: Complete 1-2 drive cycles for the ECU to complete sensor readiness monitors. Frequently Asked Questions Q: What is a NOx sensor and why does it fail?A: A NOx (Nitrogen Oxide) sensor monitors the nitrogen oxide levels in your diesel engine's exhaust system, feeding data to the ECU for SCR/DPF regeneration. Common failure causes include soot contamination, thermal cycling fatigue, and sensor element degradation over 100,000+ miles. Symptoms of failure include Check Engine Light (CEL), poor fuel economy, failed emissions test, and derate mode. Q: Is this 5WK96687A NOx sensor a direct plug-and-play replacement?A: Yes. This NOx sensor is designed as a direct OE replacement for 5WK96687A. It uses the same 5-pin connector and mounting thread as the OEM unit. No programming or calibration required — simply unplug the old sensor, install the new one, and clear any stored diagnostic codes. Always verify fitment with your vehicle's VIN before purchase. Q: Will this fit my Audi Q7 TDI, Volkswagen Touareg TDI (201?A: This NOx sensor fits Audi Q7 TDI, Volkswagen Touareg TDI (2011-2015) with the 3.0L TDI V6 engine. It replaces OE part numbers: 059907807J, 059907807A, 059907807C, 059907807E. Please cross-reference your existing sensor part number before ordering. If your OEM part number is listed above, this is a guaranteed direct fit. Q: What's the difference between upstream and downstream NOx sensors?A: Upstream (inlet) NOx sensors measure pre-SCR emissions to help the ECU calculate DEF dosing. Downstream (outlet) NOx sensors measure post-SCR emissions to verify the SCR catalyst is working correctly. This is the Downstream / Outlet sensor. Installing the wrong position sensor will trigger diagnostic codes. Check your vehicle's service manual for the correct position. Q: How do I know if my NOx sensor is bad?A: Common symptoms include: (1) Check Engine Light with P2200-P2214 or P229E-P22A2 codes, (2) Decreased fuel economy (ECU defaults to rich mixture), (3) Failed emissions inspection, (4) Engine derate / limp mode, (5) Excessive DEF consumption, (6) Rough idle or hesitation. Use an OBD-II scanner to read specific NOx-related codes. Q: Do I need to reset the ECU after installation?A: After installing the new 5WK96687A NOx sensor, use an OBD-II scanner to clear any stored fault codes. The ECU will automatically recognize the new sensor and begin monitoring within 1-2 drive cycles. If codes persist, double-check the electrical connector is fully seated and there are no exhaust leaks near the sensor bung. Q: How long do aftermarket NOx sensors last?A: Our NOx sensors are manufactured to strict quality standards with premium sensing elements. Expected service life is 80,000-120,000 miles under normal operating conditions. Factors affecting lifespan include fuel quality, engine maintenance, and operating environment. We offer a 1-year warranty against manufacturing defects. Q: What's included in the box?A: Each order includes one (1) 5WK96687A NOx Nitrogen Oxide Sensor with pre-installed O-ring gasket, anti-seize compound on threads, and protective cap. The sensor is individually tested and calibrated before shipping. Install tool not included. 🛒 Related NOx Sensors & Diesel Emission Parts 5WK96687A Sensor — Audi/VW TDI 5WK96691 Sensor — BMW Diesel 5WK96740B Sensor — Kenworth/International 5WK97360 Sensor — Ram 2500/3500 View All Emission Sensors → 📖 Related Diesel Maintenance Guides Cummins ISX Crankcase Breather Filter Guide Diesel Fuel Filter Replacement Guide CP4 to CP3 Pump Upgrade Guide 6.7 Powerstroke Fuel Filter How-To

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NOx Nitrogen Oxide Sensor 5WK96683D — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96683D is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models Engine Mercedes-Benz CLA250, GL320, GL350, ML320, ML350, ML400, S350 2.1L/3.0L Diesel Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Mercedes-Benz A0009053603, 0009053603, A0009057100 Continental/VDO 5WK96683D Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96683D Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96681E — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96681E is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models Engine Mercedes-Benz E250, GLK250 BlueTEC 2.1L Diesel Freightliner Sprinter 2500, 3500 3.0L V6 Diesel Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Mercedes-Benz A0009053403, 0009053403 Continental/VDO 5WK96681E Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96681E Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96681D — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96681D is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models Engine Mercedes-Benz E250 BlueTEC 2.1L Diesel Freightliner Sprinter 2500, 3500 3.0L V6 Diesel Mercedes-Benz GLK250 BlueTEC 2.1L Diesel Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Mercedes-Benz A0009055100, A0009053403 Continental/VDO 5WK96681D Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96681D Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96681C — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96681C is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models Engine Mercedes-Benz E250, E350, E400, GLK250 2.1L/3.0L Diesel Freightliner Sprinter 2500, Sprinter 3500 3.0L V6 Diesel Mercedes-Benz R350 BlueTEC 3.0L Diesel Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Mercedes-Benz A0009053403, 0009053403 Continental/VDO 5WK96681C Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96681C Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96674A — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96674A is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models OEM Ref Kenworth Multiple Class 8 models 2871978 Peterbilt Multiple Class 8 models 2894939RX Van Hool Commercial Bus 2871978 Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Kenworth/Peterbilt/Van Hool 2871978, 2894939RX Continental/VDO 5WK96674A Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96674A Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96672A — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96672A is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models OEM Ref Lafrance Condor 2871974 Blue Bird School Bus 2894943RX Capacity Terminal Tractor 2871974 Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Lafrance/Blue Bird/Capacity 2871974, 2894943RX Continental/VDO 5WK96672A Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96672A Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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NOx Nitrogen Oxide Sensor 5WK96668B — OEM-Grade Emissions Control Replacement The iFJF NOx Sensor 5WK96668B is a direct plug-and-play replacement for your vehicle's factory nitrogen oxide sensor. Engineered to meet or exceed OEM specifications, this sensor restores proper DEF/SCR system function, eliminates check engine lights triggered by NOx sensor fault codes, and helps your diesel engine pass emissions testing. What a NOx Sensor Does Nitrogen Oxide (NOx) sensors monitor the concentration of harmful nitrogen oxides in your diesel exhaust stream — both before and after the Selective Catalytic Reduction (SCR) catalyst. The engine control module (ECM) uses this data to precisely meter Diesel Exhaust Fluid (DEF) injection. When a NOx sensor fails, the ECM can't regulate DEF dosing properly, leading to increased emissions, reduced fuel economy, and potential limp-mode activation. Key Features OE-Equivalent Performance — Calibrated to match the voltage curve and response time of the factory sensor for seamless ECM integration. Plug-and-Play Installation — Pre-terminated connector matches factory wiring harness. No splicing, no programming — remove the old sensor and install the new one. Durable Construction — High-temperature ceramic sensing element with stainless steel probe body withstands exhaust temperatures up to 930°C (1,700°F). Clears NOx-Related Fault Codes — Resolves common DTCs related to NOx sensor performance, circuit range, and rationality errors. 12-Month Warranty — Backed by iFJF's quality guarantee against manufacturing defects. Compatibility Make Models OEM Ref Hino Multiple truck models 89463-E0451 Cross-Reference / OEM Part Numbers Manufacturer Part Number(s) Hino 89463-E0451 Continental/VDO 5WK96668B Specifications Sensor Type Nitrogen Oxide (NOx) Sensor Model 5WK96668B Connector Type Pre-Terminated Factory Match Probe Material Stainless Steel with Ceramic Element Operating Temperature Up to 930°C (1,700°F) Installation Plug-and-Play (No Programming) Warranty 12 Months Symptoms of a Failing NOx Sensor Check Engine Light (CEL/MIL) — Common fault codes: P2200-P2214 (NOx sensor circuit), P229E/P20EE (SCR NOx efficiency) Failed Emissions Test — Vehicle produces excessive NOx emissions during inspection Increased DEF Consumption — ECM overcuts DEF trying to compensate for bad sensor readings Reduced Fuel Economy — Engine may run in a less efficient mode when NOx sensor data is unreliable Limp Mode / Reduced Power — In severe cases, the ECM may limit engine power to protect the emissions system Frequently Asked Questions Do I need to reprogram the ECM after installing this sensor? No — this is a plug-and-play sensor. The ECM will automatically recognize the new sensor on the next key cycle. However, you may need to clear existing fault codes with an OBD-II scanner. Some vehicles require a short drive cycle (10-20 miles) for the sensor to fully calibrate and for readiness monitors to set. How do I know if my NOx sensor needs replacement? The most common indicators are: (1) check engine light with NOx-related DTCs, (2) failed emissions test with high NOx readings, and (3) visible physical damage to the sensor or wiring harness. A professional diesel shop can confirm the diagnosis with a scan tool by comparing upstream and downstream NOx readings. What's the difference between upstream and downstream NOx sensors? Upstream (pre-SCR) sensors measure NOx entering the catalyst. Downstream (post-SCR) sensors measure NOx exiting the catalyst. They may look identical physically but are typically calibrated differently. Verify your vehicle's exact position before ordering. Can a bad NOx sensor cause DEF system problems? Yes — the ECM relies on NOx sensor data to calculate DEF injection rates. A faulty sensor sending incorrect data can cause over-injection (wasting DEF fluid) or under-injection (failing emissions standards). Either scenario can trigger additional fault codes. How long should a NOx sensor last? Factory NOx sensors typically last 80,000-150,000 miles depending on driving conditions. Contaminated DEF fluid, excessive idling, and high-sulfur fuel can significantly reduce sensor life. If one sensor has failed, the others on the vehicle may not be far behind.

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Product Overview The iFJF Inlet NOx Sensor is a direct OEM replacement for Detroit DD13, DD15, and DD16 diesel engines used in Freightliner, Western Star, and other heavy-duty trucks. This upstream (inlet) nitrogen oxide sensor provides critical emissions data to the engine ECU for SCR system optimization. Pre-calibrated and ready to install. Key Features OEM-Grade Sensing Element: Precision ceramic sensing element delivers accurate NOx readings across the full operating temperature range. Pre-Calibrated: No dealer programming required — plug in and the ECU auto-recognizes the sensor. Direct Fit: Identical connector, thread pitch, and probe length as OEM sensors A0101532228 and 5WK97338A. Durable Construction: Stainless steel probe body with high-temperature cable rated for extreme exhaust environment conditions. Restores SCR Efficiency: A failing NOx sensor causes poor DEF dosing, reduced fuel economy, and potential derate conditions. Compatibility Brand Model/Part Years/Notes Detroit DD13 All model years Detroit DD15 All model years Detroit DD16 All model years Freightliner Cascadia With DD13/DD15/DD16 Western Star 4900, 5700XE With DD13/DD15/DD16 Technical Specifications Specification Value Part Number A0101532228 / 5WK97338A (Replacement) Sensor Type Upstream / Inlet NOx Sensor Function Measures NOx concentration pre-SCR catalyst Connector Type OEM Match, Plug-and-Play Probe Material Stainless Steel with Ceramic Element Calibration Factory Pre-Calibrated Includes Sensor + Anti-Seize Compound Why Choose iFJF? Save 50-70% vs Dealer: OEM NOx sensors from the dealer can cost $400-800. Our direct replacement delivers identical performance at a fraction of the price. Avoid Derate: A bad NOx sensor triggers Check Engine lights and can put your truck into limp mode. Get back on the road fast. Same-Day Shipping: In stock in US warehouses — no waiting for backordered dealer parts. 1-Year Warranty: Full replacement warranty against manufacturing defects. Installation Locate the inlet NOx sensor on the exhaust system before the SCR catalyst. Disconnect the electrical connector by pressing the release tab. Using a 22mm oxygen sensor socket, unscrew the old sensor. Apply the included anti-seize compound to the new sensor threads (avoid the probe tip). Thread the new sensor in by hand, then torque to 35-40 ft-lbs. Reconnect the electrical connector until it clicks. Start engine and verify no MIL. Frequently Asked Questions Q: What's the difference between inlet and outlet NOx sensors?A: The inlet (upstream) sensor measures NOx entering the SCR catalyst. The outlet (downstream) sensor measures NOx after treatment. They are NOT interchangeable — this listing is for the INLET sensor only.Q: Do I need to reprogram after replacing the sensor?A: No. Our sensors are pre-calibrated and the Detroit ECU will auto-detect the new sensor. If a fault persists, you may need to clear the code with a diagnostic scanner.Q: What are symptoms of a bad NOx sensor?A: Check Engine Light with NOx-related codes, poor fuel economy, frequent DPF regens, DEF dosing issues, or the truck entering derate (limp mode).Q: Is this sensor the same as the OEM Continental/VDO unit?A: Our sensor is manufactured to the same specifications and performance standards as the OEM Continental 5WK97338A sensor. Same ceramic element technology.Q: Will this fit my 2018 Cascadia with DD15?A: Yes. All Freightliner Cascadia models with DD13, DD15, or DD16 engines use this inlet NOx sensor. Related Products Inlet NOx Sensor for Ram 2500-5500 6.7L Cummins Related Blog Posts L5P Duramax: Downpipe Install + EGR Block-Off Cummins ISX Crankcase Breather Filter Guide

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Product Overview The iFJF Downstream NOx Sensor SNS317A is engineered for 2017-2019 Chevrolet Silverado and GMC Sierra 2500HD/3500HD trucks equipped with the 6.6L L5P Duramax diesel engine. The L5P generation introduced a more sophisticated SCR system requiring precise NOx monitoring — when the downstream sensor fails, fuel economy drops, DEF consumption spikes, and the truck may enter reduced-power limp mode. This pre-calibrated sensor restores proper emissions system function without any dealer programming. Key Features L5P-Specific Engineering: Designed for the 2017-2019 L5P Duramax platform with updated sensing technology that matches this generation's faster ECU communication and response requirements. Pre-Calibrated for Instant Operation: Factory-programmed with the correct calibration data — install, clear codes with a scan tool, and the sensor communicates with the ECU immediately with no VIN coding. Restores Fuel Economy: A failing NOx sensor causes the ECU to over-inject DEF fluid to compensate, wasting expensive DEF and reducing overall efficiency. Replacing the sensor returns DEF consumption to normal rates. Double-Sealed Connector: Weather-sealed 6-pin connector prevents moisture ingress that causes intermittent NOx sensor faults — especially critical in snow-belt states where road spray is constant. Heavy-Duty Stainless Probe: Engineered to withstand the L5P's elevated exhaust gas temperatures during sustained heavy towing and active DPF regeneration events. Compatibility Make Model Engine Years Chevrolet Silverado 2500HD / 3500HD 6.6L L5P Duramax 2017-2019 GMC Sierra 2500HD / 3500HD 6.6L L5P Duramax 2017-2019 Note: For 2020+ L5P models, verify sensor part number compatibility as mid-cycle changes may apply. For off-road and competition use only. Specifications Specification Details Part Number SNS317A Position Downstream (Post-SCR Catalyst) Connector 6-Pin Weather-Sealed Engine Platform L5P Duramax 6.6L (Gen 5) Application Off-Road / Competition Use Only Why Choose iFJF The L5P Duramax is a premium engine option — don't let a failed NOx sensor keep it parked or limping. Our SNS317A delivers the same sensing precision as the OEM sensor at a significant cost savings. Pre-calibrated for true plug-and-play installation — no scan tool subscription, no dealer visit, no downtime. 90-day satisfaction guarantee. Frequently Asked Questions Q: What DTCs indicate a failed downstream NOx sensor on the L5P?A: Common codes include P2200 (NOx Sensor Circuit Bank 1 Sensor 2), P2201 (Range/Performance), P229E (NOx Sensor Circuit Performance), and related P22A0-series codes. Always verify with a scan tool which sensor position is faulting before ordering. Q: Is this sensor different from the LML (2011-2016) sensor?A: Yes. The L5P (2017-2019) uses a different NOx sensor with an updated communication protocol compared to the LML. The LML sensor (5WK96645H) is physically and electrically different and not interchangeable. Verify your engine generation before ordering. Q: Do I need to perform a forced DPF regeneration after replacing?A: Not normally. Clear the DTCs after installation and the ECU will manage emissions system operation automatically. A forced regen is only needed if the truck was in a reduced-power state with significant soot accumulation. Q: How does this compare to the dealer sensor?A: The SNS317A uses the same wideband zirconia sensing technology and is manufactured to meet or exceed the OEM sensor's performance specifications. The primary difference is price — typically 50-60% less than dealer retail for the identical function. Q: Can I install this myself?A: Yes. Access the downstream sensor (post-SCR, near the tailpipe section), unplug the weather-sealed connector, unscrew the old sensor (22mm or 7/8-inch wrench), install the new sensor, reconnect, and clear codes. Approximately 20-30 minutes with basic hand tools. Related Products Explore more from our full catalog. iFJF Direct offers thousands of quality replacement parts, tools, and accessories for your vehicle.

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Product Overview The iFJF Downstream NOx Sensor 5WK96730 is a heavy-duty replacement for 2013-2018 Ram 3500, 4500, and 5500 Chassis Cab trucks with the 6.7L Cummins ISB diesel. Chassis Cab trucks face harder duty cycles than pickup models — more idle time, higher sustained loads, and more extreme exhaust conditions. This sensor is built specifically to handle that abuse while providing accurate NOx readings to keep your commercial vehicle running and emissions-compliant. Key Features Chassis Cab Validated: While compatible with Ram 2500/3500 pickups, this sensor is specifically validated for 3500/4500/5500 Chassis Cab models that see heavier commercial and vocational use. Pre-Calibrated Plug-and-Play: Factory calibration loaded — no dealer programming needed. Clear DTCs with any OBD-II scan tool after installation and the sensor is immediately operational. Reinforced Heavy-Duty Design: Upgraded stainless steel probe body and gold-plated connector terminals withstand the sustained high exhaust temperatures of commercial towing and continuous vocational operation. Direct Mopar Cross-Reference: Replaces Mopar 68085740AA with identical electrical characteristics and mechanical fit. Same 6-pin weather-sealed connector as the OEM unit. Eliminates Limp Mode: Restores full engine power by resolving the P2200-series NOx sensor fault codes that trigger ECU derate and reduced-power limp mode on Cummins-powered Rams. Compatibility Make Model Engine Years Ram 2500 / 3500 Pickup 6.7L Cummins ISB 2013-2018 Ram 3500 / 4500 / 5500 Chassis Cab 6.7L Cummins ISB 2013-2018 Note: Verify your truck has a downstream (post-SCR) sensor fault. For off-road and competition use only. Specifications Specification Details Part Number 5WK96730 Mopar OE Number 68085740AA Position Downstream (Post-SCR) Application Ram 2500-5500 Cab & Chassis Platforms Why Choose iFJF Downtime costs money — especially for commercial operators. When your Ram Chassis Cab throws a NOx sensor code and derates, you need a fix that works the first time. This 5WK96730 sensor installs in approximately 20 minutes with basic hand tools and requires zero dealer programming or calibration. Get your truck back to work the same day. 90-day satisfaction guarantee. Frequently Asked Questions Q: Is this the same sensor as the Ram 2500 pickup uses?A: Yes. The Ram 2500, 3500 pickup, and 3500-5500 Chassis Cab all use the identical 5WK96730 downstream NOx sensor for 2013-2018 model years. The sensor is physically and electrically identical across all Ram HD platforms. Q: My truck is a cab and chassis with a flatbed — will this fit?A: Yes. The exhaust aftertreatment system on cab and chassis models is the same as the pickup configuration. The NOx sensor location and connector are unchanged regardless of body configuration. Q: How often should NOx sensors be replaced on commercial trucks?A: NOx sensors typically last 80,000-120,000 miles on commercial trucks, though high-idle applications may see shorter service life. If your fleet experiences recurring NOx sensor failures, investigate DEF quality and DPF system health as root causes. Q: Do I need to replace both sensors at once?A: Not necessarily. If only the downstream sensor has failed (confirmed by DTC), replacing just that sensor is sufficient. However, if your truck has over 100,000 miles on original sensors, consider replacing the upstream sensor proactively to avoid another breakdown and service call. Related Products Explore more from our full catalog. iFJF Direct offers thousands of quality replacement parts, tools, and accessories for your vehicle.

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Product Overview The iFJF Downstream NOx Sensor 5WK96645H is a direct replacement for 2011-2016 GM Duramax 6.6L LML and LGH diesel engines. This sensor monitors nitrogen oxide (NOx) levels after the Selective Catalytic Reduction (SCR) system to verify proper DEF fluid dosing and emissions compliance. A failed NOx sensor triggers the check engine light, derates engine power, and may force the truck into limp mode — replace it promptly to restore full engine performance. Key Features Exact Fit for LML/LGH Duramax: Designed specifically for 2011-2016 Chevrolet Silverado and GMC Sierra 2500HD/3500HD with the 6.6L LML or LGH Duramax diesel. Downstream (post-SCR) position. True Plug-and-Play: Pre-calibrated from the factory — no dealer programming, VIN coding, or scan tool subscription required. Install, clear DTCs, and the ECU recognizes the sensor automatically. OE-Grade Sensing Element: Uses the same wideband zirconia sensing technology as the OEM Continental/VDO sensor for accurate, consistent NOx concentration readings to the ECU. OEM Cross-Reference: Directly replaces GM part numbers 12669595 and 12671388, as well as the Continental 5WK96645H sensor. Severe-Duty Construction: Sealed 6-pin connector with gold-plated terminals resists corrosion from road salt and under-hood chemicals. Stainless steel probe body withstands extreme diesel exhaust temperatures. Compatibility Make Model Engine Years Chevrolet Silverado 2500HD / 3500HD 6.6L LML Duramax 2011-2016 GMC Sierra 2500HD / 3500HD 6.6L LML Duramax 2011-2016 Chevrolet Express / Savana 2500/3500 6.6L LGH Duramax 2011-2016 Note: This is the DOWNSTREAM sensor (post-SCR catalyst). Verify your fault code indicates downstream position before ordering. For off-road and competition use only. Specifications Specification Details Part Number 5WK96645H GM OE Numbers 12669595, 12671388 Position Downstream (Post-SCR Catalyst) Connector Type 6-Pin Sealed, Gold-Plated Terminals Probe Material Stainless Steel Application Off-Road / Competition Use Only Why Choose iFJF NOx sensor failure is one of the most common LML Duramax issues — and GM dealer replacement can exceed $500 per sensor. Our 5WK96645H provides identical functionality at a fraction of the dealer price, with no programming required. Save hundreds and get your truck out of limp mode today. 90-day satisfaction guarantee. Frequently Asked Questions Q: How do I know if my NOx sensor is bad?A: Common symptoms include check engine light with DTCs P2200-P2203 or P229E-P22A0, reduced engine power / limp mode, poor fuel economy, excessive DEF consumption, or failed emissions test. A scan tool reading showing the sensor stuck at a fixed value or out of normal range confirms failure. Q: Do I need to program this sensor after installation?A: No. This sensor arrives pre-calibrated. After installation, use any OBD-II scan tool to clear the fault codes. The ECU recognizes the new sensor automatically — no dealer visit or VIN programming required. Q: Upstream vs downstream — which sensor failed?A: The upstream sensor is before the SCR catalyst, downstream is after. Your DTC description will specify. Common downstream codes: P2200, P2201, P229E. Common upstream: P2202, P2203, P229F. Verify before ordering. Q: How long do NOx sensors typically last?A: Factory NOx sensors typically last 80,000-120,000 miles. Premature failure can be caused by coolant leaking into the exhaust from EGR cooler failure, excessive soot from a failing DPF, or poor-quality DEF fluid. Diagnose the root cause to prevent repeat sensor failure. Related Products Explore more from our full catalog. iFJF Direct offers thousands of quality replacement parts, tools, and accessories for your vehicle. Related Guide Read: Duramax NOx Sensor Replacement: 5WK96645H Diagnostic & Install Guide 📖 Related Guides L5P Duramax Billet vs OEM Fuel Filter Cap Comparison EGR Simulator vs Block-Off Plate: Ford Truck Guide

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Product Overview The iFJF 5WK96673A NOx (Nitrogen Oxide) Sensor is a precision-engineered emission control component designed for heavy-duty diesel trucks. This sensor continuously monitors NOx levels in the exhaust stream, providing critical feedback to the engine control module (ECM) for optimal combustion efficiency and emissions compliance. Built to stringent OEM specifications, it delivers stable, accurate readings across the full operating temperature range. Key Features OEM-Grade Accuracy: Matches the output characteristics of OE sensor 5WK96673A with deviation within ±2% Durable Construction: High-temperature resistant probe body rated for continuous exposure up to 800°C (1472°F) Plug-and-Play Installation: Pre-assembled with factory connector — no splicing, no calibration required Fast Response Time: Sub-second NOx detection enables real-time SCR dosing adjustments Corrosion-Resistant Housing: Stainless steel sensor body with sealed electronics cavity rated IP69K Compatibility Vehicle Engine Year Range Freightliner Cascadia DD13 / DD15 / DD16 2010–2023 Freightliner FLD132 Detroit Diesel Series 60 2007–2014 International LoneStar Cummins ISX15 / X15 2009–2023 International ProStar Cummins ISX12 / ISX15 2007–2017 International Gladiator Cummins X15 2010–2023 Replacement Part Numbers OE Number Cross Reference 5WK96673A 5WK9 6673, 5WK9-6673 2894941 Cummins OEM 3687334RX Cummins Reman 3687334 Cummins Standard Technical Specifications Parameter Value Sensor Type Zirconia-Based Electrochemical NOx Measurement Range 0–3000 ppm NOx Operating Voltage 12V / 24V DC Connector Type 6-Pin Deutsch DT-Series Thread Size M20 x 1.5 Response Time <1 second Symptoms of a Failing NOx Sensor Check Engine Light (MIL) illuminated with DTC P2200–P229F codes Failed emissions test / increased NOx readings Poor fuel economy (3–8% increase in consumption) Derate mode / limp mode activation Excessive DEF consumption Rough idle or hesitation under acceleration Installation Guide Locate the NOx sensor — typically mounted on the exhaust downpipe or SCR catalyst inlet Disconnect the battery negative terminal Unplug the electrical connector by pressing the locking tab Using a 22mm wrench or oxygen sensor socket, unscrew the old sensor Apply anti-seize compound to the new sensor threads (avoid sensor tip) Thread the new sensor in by hand, then torque to 40–50 Nm (30–37 ft-lbs) Reconnect the electrical connector until it clicks Reconnect battery and clear DTC codes with a scan tool ⚠️ Off-Road Use Notice: This product is intended for off-road and competition use only. Installation on vehicles operated on public roads may violate federal, state, and local emissions regulations. Check your local laws before installation. Frequently Asked Questions Q: Will this sensor fit my 2015 Freightliner Cascadia with DD15?A: Yes. This sensor is a direct fit for 2010–2023 Cascadia models equipped with Detroit DD13, DD15, or DD16 engines. It replaces OE part number 5WK96673A. Q: Does this sensor require calibration after installation?A: No. The 5WK96673A is a smart sensor with built-in self-calibration. Once installed and codes are cleared, the ECM will automatically recognize the new sensor within the first drive cycle. Q: What is the difference between 2894941 and 3687334?A: Both are Cummins part numbers for the same sensor. 3687334RX is the remanufactured version. This iFJF replacement is compatible with all three. Q: How often should NOx sensors be replaced?A: Typical service life is 100,000–150,000 miles. However, sensors may fail prematurely due to coolant contamination, excessive oil consumption, or silicone poisoning from improper gasket sealants. Q: Can a bad NOx sensor cause derate mode?A: Yes. A failed or consistently inaccurate NOx sensor will trigger the ECM to limit engine power (derate) to prevent potential SCR system damage. Prompt replacement is recommended.

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Product Overview Ensure your fleet stays compliant with emissions regulations using the iFJF 5293295 NOx Nitrogen Oxide Sensor (5WK96692A). This precision-engineered sensor is designed specifically for Blue Bird school buses and commercial vehicles, providing accurate real-time nitrogen oxide readings to your vehicle's ECU for optimal emissions control and DPF regeneration management. NOx sensors are critical components in modern diesel emission systems. A failing sensor can trigger check engine lights, reduce fuel economy, and potentially cause DPF-related issues that lead to costly downtime. This direct-fit replacement sensor restores proper emissions monitoring without the dealer price tag. Key Features OEM-Equivalent Performance: Meets or exceeds factory specifications for signal accuracy and response time Direct Plug-and-Play: Pre-calibrated — no programming or dealer reset required on most vehicles Durable Construction: High-temperature probe with corrosion-resistant stainless steel body withstands extreme exhaust conditions Wide Compatibility: Fits Blue Bird All American FE, All American RE, Vision, M2 106, and 108SD models Cross-References: Replaces 5293295, 5WK96692A, 2894945, and related part numbers 📋 Compatibility Compatible Vehicles Blue Bird All American FE (2013-Present) Blue Bird All American RE (2013-Present) Blue Bird Vision School Bus (2013-Present) Freightliner M2 106 (with Cummins Diesel) Blue Bird 108SD (2013-Present) Other applications using 5WK96692A / 2894945 sensor 📐 Specifications Specification Value Part Number 5293295 / 5WK96692A Cross References 2894945, 5WK9 6692A Sensor Type Nitrogen Oxide (NOx) — Smart Sensor Connector Type OEM-style waterproof connector Thread Size Standard M20×1.5 exhaust thread Probe Material Stainless steel with ceramic sensing element Operating Temperature -40°F to 1,650°F (-40°C to 900°C) Why Replace Your NOx Sensor? A malfunctioning NOx sensor can cause multiple issues: decreased fuel efficiency (up to 5-10%), failed emissions testing, reduced engine power (limp mode), and incomplete DPF regeneration leading to filter clogging. Replacing a faulty NOx sensor promptly saves on fuel costs and prevents more expensive downstream repairs. Installation Tips Allow exhaust system to cool completely before removal Use anti-seize compound on threads (avoid getting on sensor tip) Torque to manufacturer specifications — do not overtighten Clear any existing DTC codes after installation Perform a short drive cycle to verify sensor readings ❓ Frequently Asked Questions Q: Will this sensor fit my Blue Bird All American RE?A: Yes. This NOx sensor is compatible with Blue Bird All American RE models from 2013 onward equipped with Cummins diesel engines. Always verify your existing part number matches 5293295 or 5WK96692A. Q: Does this sensor require dealership programming?A: In most cases, no. This is a smart sensor that self-calibrates. Some vehicles may require a DTC code clear using an OBD-II scanner after installation. Q: How do I know if my NOx sensor is bad?A: Common symptoms include Check Engine Light (P2200-P2299 codes), decreased fuel economy, failed emissions test, and black smoke from exhaust. A diagnostic scan tool can confirm NOx sensor failure codes. Q: What's the difference between upstream and downstream NOx sensors?A: Upstream sensors (before SCR/DPF) measure engine-out NOx. Downstream sensors (after SCR) verify catalyst efficiency. This sensor is typically an upstream unit — verify your application before ordering. Q: How long does a NOx sensor typically last?A: NOx sensors generally last 80,000-120,000 miles under normal conditions. Extreme exhaust temperatures, fuel quality issues, or excessive idling can shorten lifespan. Q: Is this sensor compatible with Cummins ISB engines?A: Yes. The Blue Bird school buses that use this sensor are typically equipped with Cummins ISB 6.7L diesel engines. Please confirm your existing sensor part number before purchase.

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Product Overview The iFJF Inlet Upstream NOx Sensor is a direct OEM replacement for 2013-2017 Ram 2500, 3500, 4500, and 5500 trucks equipped with the 6.7L Cummins turbo diesel engine. This sensor measures nitrogen oxide levels entering the SCR catalyst — critical data for proper DEF injection and emissions compliance. Key Features Pre-Calibrated, No Programming: Install and drive — the Cummins ECU automatically recognizes and calibrates the new sensor. OEM-Grade Sensing Technology: Advanced ceramic planar sensing element for accurate, fast-responding NOx measurement. Stainless Steel Construction: Corrosion-resistant probe body and high-temp cable withstand extreme diesel exhaust conditions. Exact Fit: Matches OEM connector, thread size, and probe depth — no adapters or modifications needed. Prevents Derate: A failed NOx sensor can trigger limp mode and costly downtime. Replace it before it strands you. Compatibility Brand Model/Part Years/Notes Ram 2500 6.7L Cummins 2013-2017 Ram 3500 6.7L Cummins 2013-2017 Ram 4500 6.7L Cummins 2013-2017 Ram 5500 6.7L Cummins 2013-2017 Technical Specifications Specification Value Sensor Type Upstream / Inlet NOx Sensor Engine 6.7L Cummins Turbo Diesel Year Range 2013-2017 Vehicle Ram 2500, 3500, 4500, 5500 Calibration Factory Pre-Calibrated Installation Plug-and-Play, No Programming Includes Sensor + Anti-Seize Compound Why Choose iFJF? Massive Savings vs Dealer: Dealer NOx sensors cost $350-600+. Our direct replacement offers the same performance at a fraction of the price. Keep Your Truck Running: Avoid derate and limp mode — a working NOx sensor is essential for SCR system function. Same-Day US Shipping: In stock and ready to ship — no backorders, no waiting. 1-Year Warranty: Replacement guarantee against defects. Installation Steps Locate the inlet NOx sensor — typically in the exhaust downpipe before the SCR catalyst. Disconnect the electrical connector. Use a 22mm O2 sensor socket to remove the old sensor. Apply anti-seize to the new sensor threads (keep compound off the probe tip). Thread in by hand, then torque to 35-40 ft-lbs. Reconnect the connector until it clicks. Clear any stored codes with a scan tool. Frequently Asked Questions Q: Is this the upstream or downstream sensor?A: This is the UPSTREAM (inlet) sensor — located before the SCR catalyst. It is NOT the downstream/outlet sensor. Verify your fault code identifies which sensor needs replacement.Q: Will this clear my check engine light immediately?A: The sensor itself won't clear stored codes. After installation, use an OBDII scanner to clear the codes. If the sensor was the root cause, the light will stay off.Q: Do I need a dealer to install this?A: No. Installation takes 15-30 minutes with basic tools. No programming or calibration required — the ECU handles it automatically.Q: What if the code comes back?A: Check for exhaust leaks near the sensor, damaged wiring, or a failing SCR catalyst. A NOx sensor code doesn't always mean a bad sensor. Related Products Inlet NOx Sensor for Detroit DD13 DD15 Freightliner Related Blog Posts How To Perform A Cooling System Flush On Your Diesel Engine Best Water Separator Fuel Filter Guide

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Product Overview The iFJF Downstream NOx Sensor 5WK96730 is a direct replacement for 2013-2018 Ram 2500 and 3500 trucks equipped with the 6.7L Cummins ISB diesel engine. Positioned after the SCR catalyst, this sensor verifies that the DEF system is properly reducing NOx emissions. When this sensor fails, your Ram may enter limp mode with reduced power — a critical issue for towing and daily driving. This pre-calibrated, plug-and-play replacement gets you back on the road without a costly dealer service visit. Key Features Direct Fit for Ram Cummins: Engineered specifically for 2013-2018 Ram 2500 and 3500 with the 6.7L Cummins ISB diesel. Downstream (post-SCR) position. Pre-Calibrated — No Programming: Arrives ready to install with factory calibration loaded. Clear DTCs after installation and the ECU accepts the sensor automatically — no dealer scan tool needed. OEM Cross-Reference: Replaces Mopar part number 68085740AA and Continental/VDO 5WK96730 with identical mechanical fit and electrical sensing performance. Heavy-Duty Construction: Sealed 6-pin connector resists moisture and corrosion from under-hood washing and winter road conditions. Stainless steel probe rated for sustained diesel exhaust temperatures. Restores Full Engine Power: A failed downstream NOx sensor commonly triggers P2200-P2203 or P229E codes along with reduced engine power / limp mode. Replacing it removes the ECU derate condition immediately after clearing codes. Compatibility Make Model Engine Years Ram 2500 / 3500 6.7L Cummins ISB 2013-2018 Ram 3500 Chassis Cab 6.7L Cummins ISB 2013-2018 Ram 4500 / 5500 Chassis Cab 6.7L Cummins ISB 2013-2018 Note: Verify your fault code specifies the downstream (post-SCR) sensor position. For off-road and competition use only. Specifications Specification Details Part Number 5WK96730 Mopar OE Number 68085740AA Position Downstream (Post-SCR) Connector 6-Pin Weather-Sealed Fuel Type Ultra-Low Sulfur Diesel (ULSD) Only Why Choose iFJF Ram dealer NOx sensor replacement typically costs $400-600 per sensor with labor. This 5WK96730 replacement offers the same sensing performance at significant savings. No programming, no dealer visit — install it in your driveway with basic hand tools and any OBD-II scan tool to clear codes. 90-day satisfaction guarantee. Frequently Asked Questions Q: Will this fix my P2200 / P2201 / P229E code?A: These codes specifically indicate a downstream NOx sensor circuit or performance issue. If your scan tool confirms a downstream sensor fault (not upstream), this 5WK96730 sensor should resolve the condition. Always verify the code points to the downstream sensor before ordering. Q: Does this sensor need to be programmed at the dealer?A: No. The sensor arrives pre-calibrated from the factory. Install it, clear the DTCs with any standard OBD-II scan tool, and the ECU will recognize the new sensor. No dealer software subscription or VIN coding required. Q: How can I tell upstream from downstream on my Ram?A: The upstream sensor is before the SCR catalyst (closer to the turbocharger), downstream is after (closer to the tailpipe). Your scan tool will specify "Sensor 1" (upstream) or "Sensor 2" (downstream) in the fault code description. Q: Why did my NOx sensor fail?A: Common causes include coolant contamination in the exhaust from EGR cooler failure, excessive soot loading from a failing DPF, poor-quality DEF fluid, or simply normal wear at 80,000-120,000 miles. Diagnose the underlying issue to avoid repeat sensor failures. Related Products Explore more from our full catalog. iFJF Direct offers thousands of quality replacement parts, tools, and accessories for your vehicle.

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Product Overview Upgrade your vehicle with this premium garage door safety sensor, precision-engineered for exact fitment and long-lasting performance. Designed as a direct replacement for A5, this aftermarket component meets or exceeds OEM specifications for durability, reliability, and ease of installation. Whether you're a professional mechanic or a weekend DIYer, this is the cost-effective alternative to dealership pricing. Key Features & Benefits Direct Bolt-On Fit: Precision-manufactured to factory tolerances — no modifications required for installation. Premium-Grade Materials: Constructed from high-strength materials with anti-corrosion treatment for maximum service life in all climates. OEM-Spec Engineering: Manufactured to match or exceed original equipment specifications — guaranteed compatibility and performance. Complete Replacement Kit: Includes all necessary hardware, seals, and gaskets for a complete installation. Quality Tested: Each unit passes multi-point inspection before shipment to ensure dependable, trouble-free operation. Vehicle Compatibility Attribute Specification Compatible Vehicles A5 Year Range See description Replaces OEM Part # Garage, Opener, Safety, Sensor, 41A5034, Replaces iFJF SKU FJ-LOCK-5034 Brand iFJF Technical Specifications Specification Detail Product Type Garage Door Safety Sensor — Aftermarket Replacement Condition Brand New — Never Installed Construction Premium-grade materials — rust, corrosion & heat resistant Installation Type Direct bolt-on replacement — professional installation recommended Warranty 30-day satisfaction guarantee — hassle-free returns Why Choose iFJF Parts? OEM-Grade Quality: Every iFJF component is manufactured to meet or exceed factory specifications — no compromises on materials, tolerances, or durability. Multi-Point QC Inspection: Each unit undergoes rigorous quality testing before leaving our facility, ensuring reliable performance right out of the box. US-Based Inventory: Products ship from US warehouses — no 30-day overseas wait times. Most orders ship within 1-2 business days. Dedicated Support Team: Our automotive specialists are available to answer fitment questions and provide installation guidance. Risk-Free Purchase: 30-day hassle-free return policy — if it doesn't fit or you're not satisfied, we'll make it right. Installation Guidelines Verify Fitment: Check the compatibility table above and compare with your vehicle's year, make, model, and engine before ordering. Compare Parts: Before installation, compare the new part side-by-side with your old unit to confirm identical fitment. Surface Preparation: Clean all mounting surfaces thoroughly to ensure proper seating and seal integrity. Torque Specifications: Use the torque values specified in your vehicle's factory service manual — do not over-tighten. Professional Installation: While DIY-friendly, we recommend professional installation for safety and optimal results. Frequently Asked Questions Q: Will this fit my specific vehicle?A: Please verify using the compatibility table above. Match your vehicle's year, make, model, and engine. If you're still unsure, send us your VIN or vehicle details — we'll confirm compatibility within 24 hours. Q: Is this a genuine OEM part?A: This is a premium aftermarket replacement manufactured to OEM specifications. It delivers equivalent or better quality at a fraction of dealership pricing. Q: What tools do I need for installation?A: Most installations require only basic hand tools. We recommend checking your vehicle's service manual for any specialized tools needed for your specific application. Q: What's included in the package?A: The package includes the garage door safety sensor and all necessary components as shown in product images. Hardware, seals, and gaskets are included where applicable. Q: How fast is shipping?A: Orders ship from our US warehouses within 1-2 business days. Standard delivery is typically 3-7 business days. Express shipping options are available at checkout. Q: What if it doesn't fit?A: We offer a 30-day hassle-free return policy. If the part doesn't fit or you're unsatisfied for any reason, contact us for a prepaid return label and full refund. 🔗 Related Products & Resources Complete your setup and get the most from your purchase: 📦 Browse All Garage & Home 🛒 Shop All iFJF Parts 📖 Read Installation & Maintenance Guides ❓ Ask a Fitment Question

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Product Overview The iFJF TPS/APPS Throttle Position Sensor is a direct-fit replacement for 1998-2007 Dodge Ram 2500 and 3500 with the legendary 5.9L Cummins turbo diesel. This critical sensor communicates pedal position to the ECU when it fails, you will experience dead pedal, surging, poor acceleration, or erratic shifting. Restore factory throttle response with this OEM-spec replacement. Key Features OEM-Spec Calibration: Factory-calibrated voltage curve for seamless communication no dead spots, no surging. Plug-and-Play: Identical connector and mounting to original 53031575 sensor. No wiring modifications needed. Durable Construction: Sealed housing resists moisture, vibration, and under-hood temperature extremes. Restores Proper Shifting: Fixes harsh shifts, hanging gears, and failure to downshift caused by faulty TPS signal. Addresses Dead Pedal: Eliminates dangerous no-response condition when pressing accelerator. Compatibility Make Model Engine Years Dodge Ram 2500 5.9L Cummins 1998-2007 Dodge Ram 3500 5.9L Cummins 1998-2007 Symptoms of Failing TPS/APPS Dead Pedal: No RPM increase pressing accelerator Surging: RPM fluctuates without pedal input Erratic Acceleration: Inconsistent throttle response Harsh Shifting: Hard shifts, hanging gears Check Engine Light: Codes P0121-P0124, P0221-P0229 Limp Mode: Reduced-power fail-safe mode Frequently Asked Questions Q: Will this fix dead pedal on my 2005 Ram 2500 Cummins?A: Yes! Dead pedal is the most common APPS failure symptom. This direct replacement restores proper throttle signal. Q: Does this sensor require calibration?A: On most 1998-2007 models no calibration needed. Some 2003-2007 may benefit from APPS reset (key-on, pedal sweep, key-off). Q: How can I confirm my TPS is bad?A: Check for codes P0121-P0124 or P0221-P0229 with OBD2 scanner. Test with multimeter voltage should sweep smoothly 0.5V to 4.5V. Related Products You May Need Fuel Injection Rail Pressure Sensor For Ford Mustang F150 Explorer 026 iFJF Throttle Body Spacer For Chevy Tahoe LS LT LTZ 4.8L 5.3L 6.0L 2007-2015 iFJF Transmission Oil Cooler LPD47391 Low Pressure Drop Trans Cooler 40000 GVW O Related Guides & Resources Dodge Cummins Common Issues Diesel Engine Sensor Diagnostics

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Product Overview The Pressure Sensor for Onan A042P619 Generator Carburetor KY Series is a premium-quality replacement part engineered for durability and precise fitment. Whether you're a professional mechanic or a DIY enthusiast, this component delivers OEM-grade performance at an affordable price. Manufactured with high-grade materials to withstand demanding conditions, it ensures reliable operation and long service life. Designed as a direct-fit replacement, installation is straightforward with basic hand tools — no special modifications required. Each unit undergoes rigorous quality inspection before shipping to guarantee it meets or exceeds factory specifications. Key Features Premium Construction: Built with high-grade materials for maximum durability and corrosion resistance Direct Fit: Precision-engineered to match OEM specifications — no modifications needed Easy Installation: Designed for straightforward bolt-on replacement with standard tools Rigorously Tested: Each unit passes strict quality control checks before shipment Cost-Effective: OEM-quality performance without the dealership price tag Fast Shipping: Ships from our US warehouse with reliable delivery Compatibility Please verify fitment before ordering. This product is designed to be compatible with the following applications: Compatible Brands Onan Replaces Part # A042P619 G, KY S ⚠️ Important: Always cross-reference your vehicle's year, make, model, and existing part number before ordering. Contact our support team if you need assistance confirming compatibility. Product Specifications Part Number(s) A042P619 G, KY S Brand iFJF Condition New SKU FJ-FSS27 Price $37.99 Why Choose iFJF? At iFJF, we specialize in providing high-quality aftermarket parts and accessories for automotive, powersports, RV, and outdoor equipment. Our mission is simple: deliver reliable, affordable replacement parts that professionals and DIYers can count on. ✅ Rigorous quality testing on every batch ✅ Fast, reliable shipping from US warehouses ✅ Responsive customer support team ✅ Thousands of satisfied customers nationwide Installation Tips Safety First: Disconnect the battery (if applicable) and wear appropriate safety gear before starting. Prepare Tools: Gather all necessary tools before beginning — check product listing for any special tool requirements. Remove Old Part: Carefully remove the existing component, noting the orientation and connections. Compare Parts: Place old and new parts side-by-side to verify fitment before installation. Install New Part: Mount the new component in the same orientation, ensuring all connections are secure. Test: After installation, test operation thoroughly before returning to regular use. Note: If you're unsure about any step of the installation process, we recommend consulting a professional mechanic or technician. Frequently Asked Questions Q: Is this a genuine OEM part?A: This is a high-quality aftermarket replacement part manufactured to meet or exceed OEM specifications. It is NOT a genuine OEM part. Q: Will this fit my vehicle?A: Please verify compatibility using the specifications and compatibility table above. Match your vehicle's year, make, model, and existing part number before ordering. Q: What is included in the package?A: The package includes the Pressure Sensor for Onan A042P619 Generator Carburetor KY Se as shown in the product images. Please refer to the listing photos for exactly what's included. Q: How long does shipping take?A: We ship from our US warehouse. Standard shipping typically takes 3-7 business days within the continental US. Expedited options are available at checkout. Q: What is your return policy?A: We offer a 30-day return policy for unused items in original packaging. If you receive a defective product, contact us immediately for a replacement or refund. Q: Do you offer warranty?A: Yes, all iFJF products come with a satisfaction guarantee. If you experience any issues, reach out to our support team for assistance. Order With Confidence Join thousands of satisfied customers who trust iFJF for their parts and accessories needs. With our commitment to quality, fast shipping, and excellent customer service, you can shop with confidence. Click "Add to Cart" now to get your Pressure Sensor for Onan A042P619 Generator Carburetor KY Se delivered fast!

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Product Overview The iFJF DPFE6 EGR Exhaust Back Pressure Sensor is a precision-engineered aftermarket replacement for Ford 6.0L Powerstroke diesel trucks. Designed to replace OEM part number 5C3Z-9J460-B, this DPFE (Differential Pressure Feedback EGR) sensor measures exhaust back pressure and relays critical data to the PCM for proper EGR system operation. Built with high-temperature-rated components for the demanding diesel environment. Key Features OEM-Spec Voltage Range — Calibrated to match Ford factory output (0.5-4.5V range) for seamless PCM communication and no check engine lights. High-Temperature Construction — Ceramic sensing element and stainless steel housing rated for continuous 600°F+ exhaust gas exposure. Direct Plug-and-Play — Factory connector match — no wire splicing or adapter harnesses required. Installation takes 10-15 minutes. Resolves Common Codes — Fixes DTCs P0401 (EGR Flow Insufficient), P0402 (EGR Flow Excessive), P0405/P0406 (EGR Sensor Circuit). Corrosion-Resistant — Sealed housing with weatherproof connector prevents moisture ingress and terminal corrosion. Compatibility Vehicle Engine Years Ford F250 Super Duty 6.0L Powerstroke V8 Diesel 2003-2007 Ford F350 Super Duty 6.0L Powerstroke V8 Diesel 2003-2007 Ford F450/F550 Super Duty 6.0L Powerstroke V8 Diesel 2003-2007 Ford Excursion 6.0L Powerstroke V8 Diesel 2003-2005 Specifications Spec Value Replaces OEM 5C3Z-9J460-B / DPFE6 Brand iFJF Condition New Connector Type 3-Pin Weatherproof Voltage Range 0.5V – 4.5V DC Why Choose iFJF iFJF replacement sensors are built to OEM specifications using industrial-grade components. Unlike generic sensors that may drift out of calibration, our DPFE sensors maintain consistent output across the full operating temperature range. Each unit is tested before shipping. US-based customer support stands behind every purchase. Installation Tips Locate the DPFE sensor — mounted on the driver's side valve cover or intake manifold on 6.0L Powerstroke engines. It has two hoses running to the exhaust manifold. Disconnect the electrical connector — press the tab and pull firmly. Remove the two hoses — note which hose goes to which port. Remove mounting bolts (usually 8mm) and lift out the old sensor. Install the new sensor — bolt it down, reattach hoses to the correct ports, and plug in the connector. Clear DTC codes with an OBDII scanner. Start engine and verify no check engine light returns. Frequently Asked Questions Q: What symptoms indicate a bad DPFE/EGR pressure sensor?A: Common symptoms include: Check Engine Light (codes P0401/P0402), rough idle, poor fuel economy, black exhaust smoke, hesitation during acceleration, and failed emissions test. If you see these symptoms on your 6.0L Powerstroke, test the DPFE sensor voltage before replacing. Q: Is this a direct replacement for 5C3Z-9J460-B?A: Yes. This DPFE6 sensor is engineered to match the OEM 5C3Z-9J460-B specifications — same connector, same mounting, same voltage range. Direct plug-and-play installation in under 15 minutes. Q: Which Ford trucks does this fit?A: This sensor fits 2003-2007 Ford F250/F350/F450/F550 Super Duty trucks with the 6.0L Powerstroke diesel engine. Also compatible with 2003-2005 Ford Excursion 6.0L. Q: Can a bad DPFE sensor damage my engine?A: A faulty DPFE sensor won't directly damage the engine, but it causes incorrect EGR valve operation. This can lead to carbon buildup, reduced performance, and lower fuel efficiency. Replace promptly to avoid secondary issues. Q: How do I test a DPFE sensor?A: Measure voltage between the signal wire and ground with key-on/engine-off — should read ~0.5-1.0V. At idle with warm engine, voltage should be ~0.8-1.5V. If voltage is stuck or out of range, the sensor needs replacement. Related Products EGR Valve Delete Kit for 6.4 Powerstroke Diesel 5.3L 6.0L LS EGR+EVAP Block Off Plates Kit LSX Silverado EGR Tube Block-off Plate

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12639277 Water in Fuel (WIF) Sensor for Duramax 6.6L Diesel (2001-2011) The 12639277 Water in Fuel Indicator Sensor is a critical safety component for your Duramax 6.6L diesel engine. This sensor continuously monitors the fuel supply for water contamination and alerts you via the dashboard "Water in Fuel" warning lamp before water reaches your expensive fuel injectors. Water in diesel fuel can cause catastrophic injector failure, fuel system corrosion, and microbial growth (diesel bug) — this simple sensor is your first and only line of defense. Compatible with 2001-2011 Chevrolet Silverado and GMC Sierra trucks equipped with the Duramax 6.6L turbo diesel (LB7, LLY, LBZ, LMM), our aftermarket replacement offers OEM-grade reliability at a fraction of dealer pricing. If your "Water in Fuel" light stays on after draining the filter housing — or never comes on at all — your sensor has likely failed. Key Features 8-Sided Hex Design: Improved over the OEM 6-sided design — easier to grip with a wrench, less likely to round off during installation and removal Direct OEM Replacement: Replaces GM 12639277, 12639450, 97384931 — plug-and-play with factory wiring harness connector Water Detection Circuit: Uses conductivity-based detection — when water (conductive) bridges the sensor electrodes, the circuit completes and triggers the dashboard warning Pre-Installed Viton O-Ring: Diesel-rated seal prevents leaks at the filter housing interface Corrosion-Resistant Probe: Stainless steel electrodes resist pitting and false triggering from fuel contaminants Vehicle Compatibility Make Model Year Range Engine Chevrolet Silverado 2500HD / 3500HD 2001-2011 6.6L Duramax (LB7, LLY, LBZ, LMM) GMC Sierra 2500HD / 3500HD 2001-2011 6.6L Duramax (LB7, LLY, LBZ, LMM) Chevrolet Express 2500/3500 Van 2006-2011 6.6L Duramax LMM GMC Savana 2500/3500 Van 2006-2011 6.6L Duramax LMM Technical Specifications Specification Value OEM Part Numbers 12639277, 12639450, 97384931 Sensor Type Conductivity (resistive) Connector Type 2-pin weather-sealed (matches factory harness) Thread Size OEM-spec — direct fit into filter housing port Hex Size 8-sided (improved grip over OEM 6-sided) SKU FJ-FSS01-WH FAQ Q: How do I know if my WIF sensor is bad? A: Common failure symptoms: (1) "Water in Fuel" light stays on constantly — even after draining the filter housing completely; (2) Light never comes on — even when you know there's water in the system (no self-test at key-on); (3) Light flickers intermittently — corroded or loose connector; (4) Diagnostic trouble code P2264 (Water in Fuel Sensor Circuit). Q: Can I clean my old WIF sensor instead of replacing it? A: Sometimes. Remove the sensor and inspect the probe electrodes. If they're covered in sludge or bacterial growth (diesel bug), cleaning with electrical contact cleaner and a soft brush may restore function. However, if the sensor has internal corrosion, cracks in the body, or the connector pins are corroded — replacement is the only fix. At $19.99, it's usually not worth the gamble. Q: What happens if I ignore the "Water in Fuel" warning? A: Water in diesel fuel causes three problems: (1) Injector tip erosion — water droplets hitting the injector nozzle at 26,000+ PSI act like sandblasting, destroying the spray pattern; (2) Fuel system corrosion — water promotes rust on ferrous components in the injection pump and fuel lines; (3) Microbial growth — bacteria and fungi breed at the water-fuel interface, producing acidic byproducts and sludge that clog filters. Injector replacement on a Duramax costs $3,000-$5,000. A $19.99 sensor is cheap insurance. Q: Does this fit the 12642623 filter housing? A: Yes — this sensor fits the OEM and aftermarket 12642623 filter housings, including our billet aluminum housing. The sensor port thread is standard across all Duramax filter heads from 2001-2011. Q: Do I need to drain the fuel filter before replacing the sensor? A: It's recommended. The sensor mounts at the bottom of the filter housing — removing it will spill fuel (about 4-8 oz). Place a drain pan underneath, open the bleeder screw to relieve pressure, then spin out the old sensor and thread in the new one. Prime the system afterward. Q: Will this fit my 2012 LML? A: The 2011-2016 LML uses a different WIF sensor design integrated with the fuel filter housing heater element. This sensor is for 2001-2011 model years (LB7, LLY, LBZ, LMM). Always verify your existing sensor's appearance against our product photos before ordering. Q: How does the WIF sensor detect water in diesel fuel?A: The 12639277 sensor uses conductivity-based detection: two stainless steel electrodes probe the fuel in the bottom of the filter housing. Diesel fuel is non-conductive, but water is conductive. When enough water accumulates to bridge the electrodes, the circuit completes and triggers the 'Water in Fuel' warning lamp on your dashboard. The 8-sided hex design on our replacement provides better wrench grip than the OEM 6-sided design — reducing the chance of rounding off during installation. If your warning light stays on after draining the filter housing, the sensor electrodes are likely fouled with diesel sludge or the internal circuit has failed — replacement is straightforward with a 10mm wrench. 📖 Related Guides Diesel Fuel Filter Maintenance — When to Replace Your Fuel/Water Separator 🔧 Related Products Fuel Filter Housing — related Duramax fuel system component TP3018 Fuel Filter — related Duramax fuel system component

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Water-in-Fuel Sensor for 2003-2007 Ford 6.0L Power Stroke Diesel The iFJF Water-in-Fuel (WIF) Sensor is a direct OEM replacement for the notoriously failure-prone sensor on 2003-2007 Ford 6.0L Power Stroke engines. When your WIF light stays on even after draining the HFCM, chances are the sensor itself has failed — and this is the fix you need. Key Features Direct OEM Replacement: Replaces 6C3Z-9C264-A, 904-459, FWSS114 — exact fit for the HFCM (Horizontal Fuel Conditioning Module) on 6.0L Power Stroke engines. Plug-and-Play: 5-minute driveway installation. Unplug the old sensor, unscrew it, thread in the new one, reconnect the harness. Stops False Alerts: If your "Water in Fuel" light is on but you've already drained the HFCM and found no water, a failed sensor is the culprit. This replacement resolves the issue. Corrosion-Resistant: Sealed electronics prevent the internal corrosion that causes OEM sensors to fail after years of diesel fuel exposure. Vehicle Compatibility Make Model Year Range Engine Ford F-250 / F-350 / F-450 / F-550 Super Duty 2003-2007 6.0L Power Stroke V8 Ford E-350 / E-450 Super Duty 2003-2007 6.0L Power Stroke V8 Ford Excursion 2003-2005 6.0L Power Stroke V8 Symptoms of a Failed WIF Sensor "Water in Fuel" warning light stays on after draining the HFCM separator No water found in drained fuel, but light persists Intermittent WIF light that comes and goes randomly Engine enters reduced power/limp mode due to false water detection signal Installation Instructions Locate the HFCM on the driver-side frame rail under the cab. Unplug the electrical connector from the WIF sensor (the sensor on the bottom/side of the HFCM). Using an appropriate wrench, unscrew the old sensor counterclockwise. Have a small container ready — a small amount of diesel will drip out. Clean the sensor port threads on the HFCM housing. Thread the new sensor in by hand to avoid cross-threading, then tighten snugly with a wrench. Do NOT overtighten. Reconnect the electrical harness. Cycle the key ON (not start) — the WIF light should go out. If it doesn't, drain the HFCM to ensure there's no actual water present. Frequently Asked Questions Q: My WIF light is on but I drained the HFCM and found no water. Will this fix it?A: Most likely yes! The 6.0L WIF sensor is known to fail internally, causing a persistent false warning. This replacement sensor resolves the issue in 90%+ of cases. Q: Is this the same sensor used on the 6.4L Power Stroke?A: No. The 6.4L (2008-2010) uses a different WIF sensor design. This sensor is specifically for 2003-2007 6.0L engines. Q: Do I need to prime the fuel system after replacing the sensor?A: No. Replacing the WIF sensor does not introduce air into the fuel system. Simply install and go. Q: Will driving with the WIF light on damage my engine?A: If the light is due to a failed sensor (no actual water), it's safe to drive. However, the PCM may trigger reduced power mode, so we recommend replacing the sensor promptly.

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Monitor Your Diesel Fuel Quality with iFJF Water in Fuel Sensor Water contamination in diesel fuel is a silent engine killer. Without a functioning water-in-fuel (WiF) sensor, you may not know that water has accumulated in your fuel system until expensive injector or pump damage has already occurred. The iFJF 904-438 Water in Fuel Sensor is a direct OEM-spec replacement that restores your vehicle's ability to detect water in the fuel supply and alert you through the dashboard warning light before damage happens. This sensor is compatible with 2011-2016 F-250, F-350, F-450, and F-550 Super Duty trucks equipped with the 6.7L Power Stroke diesel engine. It replaces part numbers 904-438, OEM BC3Z-9T321-A, and BC3Z9T321B. Made of premium materials that are extensively tested and durable, each package includes 1 water in fuel sensor. Important: The Water in Fuel sensor lets the Engine Control Unit (ECU) and/or dashboard lamp indicator know when water detection has occurred in the vehicle's fuel supply, helping you avoid extensive damage to the fuel system. If your "Water in Fuel" warning light stays on or fails to illuminate during self-test, your sensor may need replacement. Key Features Exact OEM Replacement: Manufactured to match the fit, form, and function of the Ford factory sensor. Replaces part number 904-438 and OEM numbers BC3Z-9T321-A and BC3Z9T321B without modifications. Critical ECU Communication: Lets the Engine Control Unit (ECU) and/or dashboard lamp indicator know when water detection has occurred in the vehicle's fuel supply to avoid extensive damage to the fuel system. Triggers the "Water in Fuel" warning light on your instrument cluster. Premium Quality Construction: Made of premium materials that are extensively tested for durability and reliability. Resistant to diesel fuel, biodiesel blends, and under-hood environmental conditions. Accurate Water Detection: Uses precision conductivity sensing to detect even small amounts of accumulated water at the bottom of the fuel filter housing where water naturally settles. Plug-and-Play Installation: Direct drop-in replacement for the factory sensor. Plugs into the existing wiring harness connector without splicing or modification. Prevents Costly Repairs: Early warning of water contamination helps you drain the separator before water reaches the high-pressure fuel pump and injectors—saving thousands in potential repair costs. Technical Specifications Specification Detail Product Type Water in Fuel (WiF) Sensor Part Number 904-438 OEM Numbers BC3Z-9T321-A, BC3Z9T321B Material Premium-Grade Materials, Extensively Tested Package Contents 1 x Water in Fuel Sensor Brand iFJF Vehicle Compatibility Year Make Model Engine 2011 – 2016 Ford F-250 Super Duty 6.7L Power Stroke Diesel 2011 – 2016 Ford F-350 Super Duty 6.7L Power Stroke Diesel 2011 – 2016 Ford F-450 Super Duty 6.7L Power Stroke Diesel 2011 – 2016 Ford F-550 Super Duty 6.7L Power Stroke Diesel Compatible with 2011-2016 Ford Super Duty trucks equipped with the 6.7L Power Stroke diesel engine. Verifies water detection in the primary fuel filter/water separator housing located on the frame rail under the driver's side. Always confirm your existing sensor part number before ordering. When to Replace Your WiF Sensor Constant Warning Light: The "Water in Fuel" light stays illuminated even after draining the separator and verifying fuel quality. No Self-Test: The warning light does not illuminate briefly during the key-on bulb check, indicating a faulty sensor or circuit. Intermittent Alerts: The warning light flickers or triggers randomly despite no water being present in the fuel system. Corrosion or Damage: Physical inspection reveals corrosion on the sensor probe, cracked housing, or damaged wiring connector. Preventative Maintenance: As part of a fuel system service when replacing the fuel filter and draining the water separator. Installation Tips Locate the fuel/water separator housing on the driver's side frame rail under the vehicle. Place a drain pan beneath the housing to catch any spilled fuel. Disconnect the electrical connector from the existing sensor by pressing the release tab. Unscrew and remove the old sensor from the bottom of the filter housing. Inspect the O-ring sealing surface on the housing for debris or damage; clean if necessary. Thread the new iFJF 904-438 sensor into the housing by hand to avoid cross-threading, then snug it gently—do not overtighten. Reconnect the electrical connector until it clicks into place. Turn the ignition to the ON position (without starting) and verify the "Water in Fuel" light briefly illuminates during the self-test. Frequently Asked Questions Why does my "Water in Fuel" light stay on even after draining the separator? If the light remains on after properly draining the water separator and confirming the fuel is clean, the sensor itself is likely faulty. The sensor probe may be coated with contaminants, corroded, or the internal electronics may have failed. Replacing the sensor with the iFJF 904-438 should resolve the issue. Will this fit my 2013 Ford F-350 6.7L Power Stroke? Yes, this sensor is a direct fit for all 2011-2016 Ford F-250, F-350, F-450, and F-550 Super Duty trucks equipped with the 6.7L Power Stroke diesel engine. It replaces Ford part numbers BC3Z-9T321-A and BC3Z9T321B. Can I drive with the Water in Fuel light on? It is not recommended. While the sensor itself being faulty does not immediately damage the engine, the light may also indicate actual water in your fuel system. Driving with water-contaminated fuel can destroy high-pressure injectors and the CP4 fuel pump—repairs exceeding $8,000-$12,000. Always drain the separator first; if the light persists, replace the sensor. How often should I drain the water separator? Ford recommends draining the diesel fuel conditioner module (DFCM) water separator monthly or at every oil change interval. More frequent draining is advisable if you fuel up at high-turnover stations in humid regions or use biodiesel blends, which tend to hold more suspended water. Related Power Stroke Parts FL2051S Oil Filter2011-2020 6.7L Power Stroke FD4615 Fuel Filter Combo2017-2019 6.7L 6.0L WIF Sensor2003-2007 6.0L Power Stroke

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