Description
FS43257 Fuel Filter Assembly for Ram 6.7L 2500-5500 2007.5-2009 Diesel Engine FS43258 5257769 68061633AA
Complete Fuel Filter Assembly — Direct Bolt-On Replacement
This complete fuel filter assembly is designed as a direct OEM replacement for 6.7L Cummins applications. Pre-assembled and ready to install — no need to piece together individual components. Each assembly includes the filter housing, element, O-rings, and mounting hardware for a hassle-free filter service.
Key Features
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Complete Assembly — Pre-assembled with housing, element, seals, and mounting hardware
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10 Micron Filtration — Multi-layer cellulose/synthetic media captures particles as small as 10 microns
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Water Separation — Hydrophobic barrier strips emulsified water from diesel fuel, preventing injector corrosion
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OEM-Quality Construction — Manufactured to ISO/TS 16949 quality standards with 100% end-of-line testing
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Direct Fit — Precision-engineered to match OEM dimensions and mounting points — no modifications required
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Corrosion Resistant — Coated/plated components withstand diesel fuel, road salt, and moisture exposure
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Validated for Ram, Cummins — Confirmed fitment across all listed applications
Compatibility
| Make |
Engine |
Year Range |
Model |
| Ram |
6.7L Cummins |
2007.5-2009 |
2500 |
| Ram |
6.7L Cummins |
2007.5-2009 |
3500 |
| Ram |
6.7L Cummins |
2007.5-2009 |
4500 |
| Ram |
6.7L Cummins |
2007.5-2009 |
5500 |
Always verify fitment using the cross-reference part numbers below or contact our support team.
Cross-Reference Part Numbers
| Brand |
Part Number |
| Fleetguard |
FS43257 |
| Fleetguard |
FS43258 |
| Mopar |
68061633AA |
| Cummins |
5257769 |
| Baldwin |
BF7960 |
| WIX |
WF10012 |
Specifications
| Specification |
Value |
| Part Number |
FS43257 |
| Brand |
iFJF |
| Filtration Rating |
10 Micron (Nominal) |
| Media Type |
Cellulose/Synthetic Blend |
| Product Type |
Fuel Filter |
| Application |
6.7L Cummins |
| Vehicle Make |
Ram, Cummins |
| Material |
Aluminum/Steel |
| Country of Origin |
China (ISO Certified) |
| Warranty |
1 Year / Unlimited Mileage |
Installation Guide
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Relieve fuel system pressure — Remove fuel cap and depressurize per vehicle service manual
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Remove old filter — Unscrew filter housing cap, remove old element, drain housing into approved container
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Clean housing — Wipe housing interior with clean lint-free cloth, inspect for debris or water
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Install new O-rings — Lubricate new O-rings with clean diesel fuel, seat properly in grooves
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Insert new element — Place new filter element into housing, ensuring proper orientation
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Reassemble and torque — Reinstall cap to manufacturer torque spec (typically 25-35 Nm)
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Prime fuel system — Cycle key to ON (not START) 3-5 times for 30 seconds each, or use manual primer pump
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Check for leaks — Start engine, inspect housing and connections for fuel seepage
Maintenance Schedule
For optimal fuel system protection, replace your fuel filter every 15,000-25,000 miles (or every other oil change) under normal operating conditions. For severe service (heavy towing, dusty environments, high-idle operation), reduce interval to 10,000-15,000 miles. Always replace both primary and secondary filters as a set on two-stage filtration systems.
Frequently Asked Questions
Q: How often should I replace the fs43257 fuel filter?
For 6.7L Cummins applications, we recommend replacing the fuel filter every 15,000-25,000 miles under normal driving conditions, or every 10,000-15,000 miles for severe service (towing, dusty environments, extended idling). Always replace both primary and secondary filters as a set.
Q: What are the symptoms of a clogged fuel filter?
Common signs include: hard starting or no-start condition, engine misfire or hesitation under load, reduced fuel economy, check engine light (often P0087 low fuel pressure code), rough idle, and loss of power at highway speeds.
Q: Is this filter a direct OEM replacement?
Yes. The fs43257 fuel filter is manufactured to meet or exceed OEM specifications for fit, form, and function. It drops directly into the factory filter housing with no modifications required.
Q: Does this filter remove water from diesel fuel?
Yes. This fuel water separator filter features a hydrophobic barrier media that effectively strips emulsified water from diesel fuel. Removing water is critical for preventing injector corrosion and microbial growth in modern high-pressure common rail fuel systems.
Q: How do I know when to change my fuel filter?
Monitor for performance symptoms (hard starts, power loss), follow your manufacturer's recommended service interval, and consider fuel quality — poor-quality diesel or biodiesel blends may require more frequent filter changes.
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