FASS Drop-In Series Diesel Fuel System for 2025-2027 RAM 2500/3500 6.7L Cummins

The FASS Drop-In Series DIFSRAM5001 fits 2025–2027 RAM 2500 and 3500 trucks with the 6.7L Cummins diesel. It installs in the factory location and works with the RAM OEM in-tank lift pump.

Not compatible with the FASS Fuel Sump Kit. May not fit aftermarket high-capacity fuel tanks; verify clearance before ordering.

Please Note: THIS IS NOT A LIFT PUMP! This is an air separation and filtration system that utilizes your factory in-tank lift pump. Installation of this kit on a cab and chassis may require modifications. Drop-In Fuel Systems are a plug-and-play filtration upgrade and are not compatible with our Fuel Sump Kit. The system mounts in the factory location and may not fit aftermarket high-capacity fuel tanks; verify clearance before ordering. No additional items are needed for installation. This drop-in filtration system retains the RAM OEM in-tank fuel pump.

FASS Drop-In Technology: The FASS Drop-In Series Diesel Fuel System is engineered to be the most cost-effective and easiest solution for removing air/vapor from diesel fuel in your diesel fuel injection system. By implementing the extreme water separator (XWS3002) filter our system will provide 2 microns absolute filtration.

Removing entrained air and vapor, Extreme Water Separation, and 2 micron absolute filtration with a Micro-Glass filter element all work together in the FASS Drop-In for Ram to optimize fuel efficiency, restore horsepower, and improve performance across the entire fuel system and engine. And that’s only scratching the surface of the benefits FASS brings to your Cummins.”

Imagine being able to improve MPG (fuel efficiency), horsepower, increase fuel injection system life, truly balance the engine (smoother operation) with other benefits listed below with an installation time in about 1 hour!

Features:

What’s Included In The DIFSRAM5001