
- Superior Contaminant Removal: This system boasts a 2-micron absolute filtration rating and removes over 99% of free and emulsified water, as well as air and air vapor, ensuring the cleanest fuel possible for your engine.
- Exclusive Performance Radius Cuts (PRC): Unlike competitors who use restrictive fittings that can reintroduce air, FASS's exclusive PRC technology provides a smooth fuel flow path, preventing performance-robbing air from returning to the fuel.
- Extreme Water Separator (XWS) Technology: The unique design of the XWS filter acts as a safety dam. If the filter reaches capacity, it can shut down your truck, preventing major damage to your fuel system components.
- Easy, No-Hassle Installation: The FASS Drop-In Technology makes this a genuine bolt-in upgrade. It retains the factory in-tank lift pump and requires no cutting or additional modifications, streamlining the installation process.
- Fuel Lubricity Enhancement: By effectively separating entrained air and air vapor, this system can increase fuel lubricity by up to 10%, further extending the life of your expensive fuel injection components.

Fuel contamination is a serious threat to the longevity and performance of your diesel engine. The FASS DIFSRAM3001 Drop-In Series Fuel Filter System is your best defense, offering a plug-and-play solution that provides world-class filtration without the hassle of a complex installation. Modern diesel injection systems are sensitive and prone to damage from even small amounts of debris, water, and air. This system addresses those vulnerabilities head-on by removing over 99% of water and filtering out particles down to 2 microns. This not only safeguards your engine from costly repairs but also helps to restore lost horsepower, improve throttle response, and even enhance your vehicle's MPG. With this true drop-in system, you can get all these benefits without any cutting, wiring, or extra modifications.
Superior Contaminant Removal: This system boasts a 2-micron absolute filtration rating and removes over 99% of free and emulsified water, as well as air and air vapor, ensuring the cleanest fuel possible for your engine.
Exclusive Performance Radius Cuts (PRC): Unlike competitors who use restrictive fittings that can reintroduce air, FASS's exclusive PRC tec[...]
- Superior Contaminant Removal: This system boasts a 2-micron absolute filtration rating and removes over 99% of free and emulsified water, as well as air and air vapor, ensuring the cleanest fuel possible for your engine.
- Exclusive Performance Radius Cuts (PRC): Unlike competitors who use restrictive fittings that can reintroduce air, FASS's exclusive PRC technology provides a smooth fuel flow path, preventing performance-robbing air from returning to the fuel.
- Extreme Water Separator (XWS) Technology: The unique design of the XWS filter acts as a safety dam. If the filter reaches capacity, it can shut down your truck, preventing major damage to your fuel system components.
- Easy, No-Hassle Installation: The FASS Drop-In Technology makes this a genuine bolt-in upgrade. It retains the factory in-tank lift pump and requires no cutting or additional modifications, streamlining the installation process.
- Fuel Lubricity Enhancement: By effectively separating entrained air and air vapor, this system can increase fuel lubricity by up to 10%, further extending the life of your expensive fuel injection components.