Description
Overview
The FASS Fuel Systems Signature Series Adjustable Diesel Fuel System (Part No. FASD07100G) is engineered to be one of the most versatile high-performance fuel systems available for your 2005-2009 Dodge Cummins. Rated at 100 gallons of diesel fuel per hour (100GPH), this adjustable lift pump gives you the ability to dial in fuel pressure precisely to match the demands of your 5.9L or 6.7L Cummins — whether you’re running a stock daily driver or a moderately built performance truck.
Built with the very same motor used in the premium FASS Titanium Signature Series systems, this adjustable fuel system delivers the reliability and volume serious diesel owners expect. Its adjustable design supports applications ranging from stock to moderate builds in the 0-600 HP range, making it a smart, future-proof upgrade as your setup evolves.
Adjustable Fuel Pressure & Boost Compensation
Unlike fixed-pressure lift pumps, this Signature Series system offers adjustable fuel pressure from 1-20 PSI, letting you customize fuel delivery for race, competition, or street use. To keep fueling consistent under load, FASS engineered in a boost compensation port: air pressure drawn from your intake manifold raises fuel pressure while under full throttle, maintaining critical fuel delivery exactly when it matters most.
Included Bulkhead Fitting & Suction Tube
Sold as a complete kit, this system includes a redesigned Bulkhead fitting and Suction Tube. Machined from durable 6061 T-6 Billet Aluminum, the Bulkhead fitting functions as both a suction tube and return, featuring a 5/8-inch Suction Tube along with a 1/2-inch Fuel Return Port. This new and improved design refines the earlier suction tube for cleaner, more efficient fuel pickup and return.
Key Highlights
- 100GPH flow rate powered by the same motor used in FASS Titanium Signature Series systems
- Adjustable fuel pressure from 1-20 PSI to customize delivery for street, race, or competition
- Built-in boost compensation port maintains fuel pressure under full throttle
- Complete kit including Bulkhead fitting and Suction Tube
- 6061 T-6 Billet Aluminum Bulkhead with 5/8-inch Suction Tube and 1/2-inch Fuel Return Port
- Supports stock to moderate 0-600 HP applications
Fitment
This FASS Signature Series Adjustable Diesel Fuel System is engineered for 2005-2009 Dodge Cummins 5.9L and 6.7L Truck/SUV applications. Finished in black and part of the ADJ Fuel System Series, it operates in the 16-18 PSI range and arrives as a complete kit ready to deliver clean, consistent fuel to your engine.
If you’re looking to upgrade fuel delivery on your 2005-2009 Cummins with a proven, adjustable, high-flow system, this FASS Signature Series pump gives you the versatility and volume to keep your engine fueled from stock to moderate performance builds.







