
- Optimal Performance: Restores horsepower, improves throttle response, and optimizes MPG (results may vary).
- Enhanced Filtration: Features a 2-micron absolute filtration rating for exceptional contaminant removal.
- Plug-and-Play Installation: Requires no cutting, wiring, or additional modifications for a hassle-free upgrade.
- Advanced Water Separation: Employs Extreme Water Separator (XWS) technology to prevent major fuel system damage in case of excessive water accumulation.
- Improved Fuel Lubricity: Reduces entrained air and air vapor, enhancing fuel lubricity by up to 10%.
- Compatibility: Retains full functionality of the factory in-tank lift pump and water-in-fuel sensor.
- Cold Weather Reliability: Optional electric heater provides improved performance in cold climates.

The FASS Drop-In Series Diesel Fuel System is a top-of-the-line filtration solution designed to safeguard your Ram 2500/3500 from the detrimental effects of fuel contamination. By removing over 99% of water, entrained air, and debris down to 2 microns, this system prevents premature failure of your fuel injection system.
Optimal Performance: Restores horsepower, improves throttle response, and optimizes MPG (results may vary).
Enhanced Filtration: Features a 2-micron absolute filtration rating for exceptional contaminant removal.
Plug-and-Play Installation: Requires no cutting, wiring, or additional modifications for a hassle-free upgrade.
Advanced Water Separation: Employs Extreme Water Separator (XWS) technology to prevent major fuel system damage in case of excessive water accumulation.
Improved Fuel Lubricity: Reduces entrained air and air vapor, enhancing fuel lubricity by up to 10%.
Compatibility: Retains full functionality of the factory in-tank lift pump and water-in-fuel sensor.
Cold Weather Reliability: Optional electric heater provides improved performance in cold climates.
Performance Radius Cuts (PRC)
FASS Drop-In Fuel Sys[...]
- Optimal Performance: Restores horsepower, improves throttle response, and optimizes MPG (results may vary).
- Enhanced Filtration: Features a 2-micron absolute filtration rating for exceptional contaminant removal.
- Plug-and-Play Installation: Requires no cutting, wiring, or additional modifications for a hassle-free upgrade.
- Advanced Water Separation: Employs Extreme Water Separator (XWS) technology to prevent major fuel system damage in case of excessive water accumulation.
- Improved Fuel Lubricity: Reduces entrained air and air vapor, enhancing fuel lubricity by up to 10%.
- Compatibility: Retains full functionality of the factory in-tank lift pump and water-in-fuel sensor.
- Cold Weather Reliability: Optional electric heater provides improved performance in cold climates.