Description
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
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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.
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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.
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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.
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Direct Mopar Cross-Reference: Replaces Mopar 68085740AA with identical electrical characteristics and mechanical fit. Same 6-pin weather-sealed connector as the OEM unit.
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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.
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