Description
The FASS Adjustable Diesel Fuel Lift Pump 250F is a 220GPH fuel system engineered for 1999-2007 Ford Powerstroke trucks and SUVs that demand more from their fuel delivery than a fixed-pressure pump can offer. Part of the FASS ADJ Fuel System Series, this system is built for moderate to extreme applications in the 600-900 HP range, giving performance-minded diesel owners a fuel pump that can be dialed in to match their specific tune, injectors, and power goals rather than forcing them into a one-size-fits-all pressure setting.
What sets this system apart is its adjustability. Rated at 220 gallons per hour and 55 PSI out of the box, the system can be tuned across a 1-75 PSI range, letting you customize fuel delivery for race, competition, or heavily modified street diesel builds. A built-in boost compensation port ties fuel pressure to intake manifold boost, so as you get into the throttle and boost climbs, fuel pressure rises right along with it. That means the system is working hardest exactly when your Powerstroke needs it most — under load and at full throttle — helping protect against fuel starvation as horsepower demands increase.
Construction & Kit Contents
This system is sold as a complete kit and includes a bulkhead fitting and suction tube machined from 6061 T-6 billet aluminum, finished in black. The bulkhead fitting is dual-purpose, functioning as both the suction and return connection point, and features a 5/8 inch suction tube alongside a 1/2 inch fuel return port. This updated bulkhead/suction tube design is built for durability and gives installers a cleaner, more flexible way to plumb the FASS system into the factory fuel tank setup.
Key Benefits
- 220GPH flow rate rated at 55 PSI, with adjustability from 1-75 PSI to match your specific performance build
- Purpose-built for moderate to extreme Powerstroke applications in the 600-900 HP range
- Boost compensation port raises fuel pressure under throttle to keep fuel delivery consistent when demand is highest
- Bulkhead fitting and suction tube CNC-machined from 6061 T-6 billet aluminum for long-term durability
- 5/8 inch suction tube and 1/2 inch fuel return port for a properly sized, high-flow fuel circuit
- Sold as a complete kit, including bulkhead fitting and suction tube
Fitment
This FASS Adjustable Diesel Fuel Lift Pump is designed to fit 1999-2007 Ford Powerstroke trucks and SUVs. It’s built as a dedicated fuel system for owners who have moved beyond stock power levels and need a lift pump that can scale with injectors, tuning, and boost as their build progresses.
For Powerstroke owners chasing serious, tunable horsepower, the FASS 250F Adjustable Fuel System offers the flow, adjustability, and billet-aluminum construction needed to keep fuel delivery ahead of the engine’s demands.
