68157291AA
The 68157291AA fuel filter is a critical component for maintaining the health and performance of Ram diesel trucks equipped with the 6.7L Cummins engine. As an OEM Mopar part, this filter plays a vital role in protecting one of the most sophisticated diesel fuel injection systems on the market.
What Is the 68157291AA Filter?
The 68157291AA is a genuine Mopar fuel filter, also known by its alternate designation MO-291. This precision-engineered component is specifically designed to meet the demanding filtration requirements of common rail diesel engines, such as the Cummins found in Ram trucks.
Vehicle Applications
This fuel filter is compatible with a wide range of Ram diesel trucks, including:
- Ram 2500, 3500, 4500, and 5500 models
- Model years 2013 through 2024
- All vehicles equipped with the 6.7L Cummins Turbo Diesel engine
- Both 4×2 and 4×4 configurations
The filter fits various cab configurations, from regular cab to crew cab models, making it a versatile replacement part for the entire Ram heavy-duty diesel lineup.
Why Fuel Filtration Matters for Diesel Engines
Diesel fuel injection systems operate under extremely high pressures, with tolerances measured in microns. With any common rail diesel engine, regular fuel filter replacement at normal service intervals is imperative . The consequences of neglecting this maintenance can be severe and expensive.
Without proper filtration, contaminants can pass through to the fuel injectors, causing premature wear. The 68157291AA filter is designed to capture particulates and water contaminants, ensuring that only clean, dry diesel fuel reaches your engine’s sensitive components.
Key Features and Specifications
The 68157291AA filter offers several important features:
Protection Level: The filter provides highly efficient removal of fuel contaminants, helping to protect the entire fuel system from debris and particulates that could damage injectors.
Complete Package: Each filter comes with an O-ring gasket included, ensuring a proper seal during installation and preventing fuel leaks.
OEM Quality: As a genuine Mopar part manufactured to original equipment specifications, the 68157291AA meets strict quality control standards.
Weight and Construction: The filter weighs approximately 0.65 pounds and features durable construction designed to withstand the harsh operating environment under your truck.
Installation and Maintenance
Installing the 68157291AA filter is straightforward for DIY mechanics or professional technicians. The filter is located on the front underside of the vehicle and requires a 29mm socket with a 3/8″ drive to remove the canister housing.
The installation process involves:
- Draining or preparing for fuel spillage
- Using the appropriate socket to remove the old filter canister
- Replacing the filter element and O-ring seal
- Reinstalling the canister with proper torque specifications
For Ram trucks with dual fuel filtration systems (common in 2019 and newer models), the 68157291AA typically serves as the primary or front fuel filter, while part number 68436631AA serves as the secondary or rear filter element.
Replacement Intervals
Following Mopar’s recommended maintenance schedule is crucial for protecting your investment. The exact replacement interval depends on your driving conditions, fuel quality, and accumulated mileage. Many Ram 6.7L Cummins owners replace their fuel filters every 15,000 to 20,000 miles, though severe duty cycles may require more frequent changes.
Cross-Reference Part Numbers
The 68157291AA is equivalent to or can be cross-referenced with several aftermarket part numbers, including:
- WF10112
- FS53000
- GF410
- P551833
- WF10255NP
- FF1279
- BF46031
However, many diesel enthusiasts and mechanics prefer the genuine Mopar filter for assured quality and perfect fitment.
Pricing and Availability
The 68157291AA filter is widely available through multiple channels. Typical retail pricing ranges from approximately $80 to $120, depending on the retailer and any current promotions. The filter can be purchased from:
- Mopar dealerships and the official Mopar eStore
- Auto parts retailers like O’Reilly Auto Parts and NAPA
- Online marketplaces including Amazon and eBay
- Specialty diesel performance shops
Why Choose Genuine Mopar Over Aftermarket?
While aftermarket alternatives exist, there are compelling reasons to choose the genuine 68157291AA Mopar filter. OEM parts are designed specifically for your vehicle’s exact specifications, ensuring proper fit, filtration efficiency, and compatibility with other fuel system components. Additionally, using genuine parts can help maintain warranty coverage and provides peace of mind regarding quality standards.
The Cost of Neglect
Skipping fuel filter replacements might seem like a way to save money, but the potential costs far outweigh the filter’s price. Modern diesel fuel injectors can cost $300 to $500 each, and a complete set of six injectors for the 6.7L Cummins can exceed $2,000. A failed high-pressure fuel pump can cost even more to replace. Regular filter maintenance with the 68157291AA is inexpensive insurance against these major repairs.
Conclusion
The 68157291AA fuel filter represents a small but critical investment in the longevity and performance of your Ram 6.7L Cummins diesel engine. By maintaining clean, contaminant-free fuel delivery, this filter helps preserve the integrity of expensive fuel system components while ensuring your truck continues to deliver the power and efficiency you expect.
Whether you’re a fleet manager maintaining multiple Ram trucks or an individual owner committed to proper vehicle care, keeping fresh 68157291AA filters in your maintenance rotation is a best practice that pays dividends in reliability and reduced repair costs over the life of your vehicle. Read info
