6 products
Fass Fuel Pumps for Powerstroke, Cummins & Duramax
FASS fuel pumps provide stable fuel pressure and clean diesel fuel under load, using a combined lift pump and filtration system to support Ford Powerstroke, Ram Cummins, and GM / Chevy Duramax platforms in light-duty and heavy-duty towing applications.
Pumps and fuel filtration systems are built from heavy-duty materials. Designs such as the FASS Titanium Signature Series Plus or FASS Drop-in series rely on precision machining, long-life motors, and high-flow housings. They are engineered for durability.
Key performance specifications
FASS diesel fuel pumps are built to maintain stable fuel pressure and clean diesel delivery under load.
- Flow rates: 100–220 GPH, depending on series
- Fuel pressure: 16–18 PSI at the inlet
- Filtration: 2 micron with water/air separation
- Warranty: up to 5 years / 1M miles on Titanium Signature Series
Benefits
A FASS fuel pump improves how the fuel system behaves during real-world operation, especially under load.
- Reduces fuel aeration issues that can cause surging or uneven throttle response
- Helps protect high-pressure injection components during towing and extended run time
- Maintains predictable fuel supply when demand changes quickly
- Operates quieter than worn factory lift pumps in daily driving
- Supports higher fuel demand without forcing changes to engine calibration
- Helps prevent fuel gelling in cold climates when equipped with a fuel heater
- Integrates cleanly into modified fuel systems using larger injectors or turbo upgrades
FAQs about fuel air separation systems – FASS pumps
What vehicles use FASS pumps?
FASS pumps are used on many diesel truck platforms, including Ford Powerstroke, GM / Chevy / GMC Duramax, and Ram Cummins applications.
- Ford Powerstroke – 6.0L, 6.4L, 6.7L, 7.3L
- Duramax – LB7, LLY, LML, L5P
- Cummins – 6.7L
Fitment is vehicle-specific, so the correct FASS fuel system needs to match your engine and model setup.
Are FASS pumps loud?
Service life depends on keeping the fuel lift pump and fuel filtration clean. Regular filter changes, proper water separation, and correct micron-rated filters help extend the life of your diesel injection system. When maintained, a combination diesel fuel lift pump and filtration setup supports stable engine performance on diesel platforms.
How long do FASS pumps last?
Longevity is mainly affected by filter change intervals, fuel quality, and operating conditions. Keeping the filtration components clean helps protect the injection system and supports consistent operation over high mileage.
Will a FASS fuel system void warranty?
Because FASS stands for fuel air separation, the system focuses on cleaner fuel delivery rather than altering engine calibration. Warranty decisions are typically handled by the dealer, depending on the specific repair and vehicle history.
Is a FASS pump worth it?
FASS Titanium Signature Series and DRP setups rely on built-in filtration, micron-rated filters, and fuel-air separation. With proper install, they help keep fuel delivery stable and can support consistent mileage. Flow options commonly range from 110 to 165 GPH, depending on the application.
Disclaimer
For Off-Road/Racing Use Only: Products on this online store are for OFF-ROAD and RACE Use Only. They may not be legal on public roads due to emissions laws.
Check Your Local Laws: Before buying or installing, please check your local laws. Using them on public roads сan violate emissions regulations.