
- Superior Filtration: Removes over 99% of both free and emulsified water, along with air vapor and debris down to a 2-micron absolute rating.
- Performance Radius Cuts (PRC): This exclusive FASS technology uses advanced machining to ensure smooth fuel flow, preventing the reintroduction of air and the formation of performance-hindering eddy currents.
- Engine Protection: The Extreme Water Separator (XWS) filter acts as a safety dam, shutting down your truck if the filter reaches capacity to prevent catastrophic damage to your fuel system.
- Maintains OEM Functionality: The system retains your factory in-tank lift pump and the full functionality of your Water-in-Fuel (WIF) sensor, ensuring seamless integration.
- Lubricity Boost: By removing entrained air and air vapor, the system can increase the lubricity of your fuel by up to 10%, further extending the life of your fuel injection components.
- True Drop-In Installation: Designed for a 100% bolt-in upgrade, this system requires no cutting or additional modifications, making installation incredibly simple.

Don't let fuel contamination put your diesel engine at risk. The FASS DIFSRAM2001 Drop-In Series Fuel Filter System provides your pickup truck with industry-leading fuel filtration in a straightforward, plug-and-play package. Modern diesel injection systems are incredibly sensitive to contaminants like debris, air, and water, which can lead to expensive wear and premature failure. The FASS Drop-In Series system is engineered to combat these issues, removing over 99% of the water and filtering out particles down to 2 microns. This process not only protects your fuel injection system but also helps to optimize MPG, restore lost horsepower, and sharpen your throttle response. Best of all, this is a true drop-in upgrade that requires no cutting, wiring, or complex modifications.
Superior Filtration: Removes over 99% of both free and emulsified water, along with air vapor and debris down to a 2-micron absolute rating.
Performance Radius Cuts (PRC): This exclusive FASS technology uses advanced machining to ensure smooth fuel flow, preventing the reintroduction of air and the formation of performance-hindering eddy currents.
Engine Protection: The [...]
- Superior Filtration: Removes over 99% of both free and emulsified water, along with air vapor and debris down to a 2-micron absolute rating.
- Performance Radius Cuts (PRC): This exclusive FASS technology uses advanced machining to ensure smooth fuel flow, preventing the reintroduction of air and the formation of performance-hindering eddy currents.
- Engine Protection: The Extreme Water Separator (XWS) filter acts as a safety dam, shutting down your truck if the filter reaches capacity to prevent catastrophic damage to your fuel system.
- Maintains OEM Functionality: The system retains your factory in-tank lift pump and the full functionality of your Water-in-Fuel (WIF) sensor, ensuring seamless integration.
- Lubricity Boost: By removing entrained air and air vapor, the system can increase the lubricity of your fuel by up to 10%, further extending the life of your fuel injection components.
- True Drop-In Installation: Designed for a 100% bolt-in upgrade, this system requires no cutting or additional modifications, making installation incredibly simple.