Description
Overview
The FASS Adjustable Diesel Fuel Lift Pump 250GPH is engineered for owners of the 2008-2010 Ford Powerstroke 6.4L who demand serious, customizable fuel delivery. Part of the FASS Fuel Systems Signature Series ADJ Fuel System line, this Super Extreme unit is rated for 900-1200 HP applications, making it a purpose-built solution for high-performance, race, and competition diesel engines. Built with the same proven motor used in the Titanium Signature Series, it delivers 250 gallons of diesel fuel per hour to keep your injectors fed when it counts.
What sets this adjustable fuel system apart is its versatility. Instead of being locked into a fixed output, you can dial in fuel pressure anywhere from 1 to 75 PSI, letting you tailor fuel delivery precisely to your setup. Whether you’re building a daily-driven Powerstroke or a dedicated competition truck, that adjustability puts you in control of how your engine is supplied under load.
Key Benefits
To further support demanding, full-throttle performance, FASS integrated a boost compensation port. Air pressure drawn from your intake manifold raises fuel pressure while the truck is under full throttle, maintaining consistent fuel pressure exactly when your engine needs it most. This ensures your 6.4L stays fed during peak demand rather than starving for fuel at the top of the rev range.
The system is sold as a complete kit that includes a Bulkhead and Suction Tube. Both components are machined from durable 6061 T-6 Billet Aluminum and finished in black for a clean, rugged appearance under the truck. The Bulkhead fitting is a smart, dual-purpose design that functions as both a suction tube and return, featuring a 5/8 inch Suction Tube paired with a 1/2 inch Fuel Return Port. This new and improved design over the previous suction tube gives you a better, more reliable way to plumb your fuel system.
Highlights
- 250 GPH flow rating for high-horsepower fuel demands
- Adjustable fuel pressure from 1-75 PSI for fully customizable delivery
- Super Extreme rating for 900-1200 HP applications
- Built-in boost compensation port that raises fuel pressure under full throttle
- Bulkhead and Suction Tube included, machined from 6061 T-6 Billet Aluminum
- 5/8 inch Suction Tube with 1/2 inch Fuel Return Port
Fitment
This FASS Signature Series Adjustable Diesel Fuel System (Part No: FASF16250G) is designed specifically for the 2008-2010 Ford Powerstroke 6.4L Truck/SUV. If you own one of these trucks and are chasing dependable, adjustable, high-volume fuel delivery, this system is built to meet the demand of your high-performance Powerstroke application. Choose FASS to keep your diesel fueled, controlled, and ready to perform.








