Description
Overview
The FASS Fuel Systems Signature Series Adjustable Diesel Fuel System (Part No. FASD02165G) is engineered to be one of the most versatile high-performance fuel systems available for the 1989-1993 Dodge Cummins 5.9L 12 Valve. Built around the same proven motor found in the Titanium Signature Series, this adjustable lift pump delivers a stout 165 gallons of diesel fuel per hour (GPH), giving high-performance and competition engines the consistent, high-volume fuel supply they demand.
What sets this system apart is its fully adjustable fuel pressure range of 1-20 PSI. Whether you’re dialing in a daily driver or fueling a race or competition build, you can customize fuel delivery to match your engine’s exact needs. Constructed from durable 6061 T-6 billet aluminum with a black finish, it’s designed to hold up to the demands of the Cummins 12 Valve platform.
Key Benefits
Fuel pressure that holds when it matters most is critical under load. That’s why this FASS system includes a built-in boost compensation port: air pressure drawn from your intake manifold raises fuel pressure under full throttle, maintaining steady fuel delivery when your Cummins is working hardest. Combined with FASS Whisper Technology for quieter operation and improved fuel flow, it’s a purpose-built upgrade over a factory setup.
Highlights
- High-performance 165GPH flow rate for demanding 5.9L Cummins 12 Valve applications
- Adjustable fuel pressure from 1-20 PSI to fine-tune fuel delivery for race or competition
- Boost compensation port that raises fuel pressure under full throttle
- Built-in fuel pressure gauge port for easy monitoring
- FASS Whisper Technology for quieter operation and improved fuel flow
- Rugged 6061 T-6 billet aluminum construction in a black finish
- All mounting hardware included and sold as a complete kit
Options & What’s Included
Sold as a complete kit, this Signature Series Adjustable Fuel System comes with all the mounting hardware needed to install it on your truck. The built-in fuel pressure gauge port makes it simple to add a gauge and keep an eye on your pressure settings as you tune. Please note this is a fuel system only and must be used with your existing fuel lines and supporting components.
Fitment
This adjustable diesel fuel system is designed specifically for the 1989-1993 Dodge Cummins 5.9L 12 Valve (Truck/SUV) applications. If you’re chasing reliable, high-volume, and adjustable fuel delivery for your first-generation Cummins, the FASS Signature Series Adjustable System is built to keep the diesel flowing exactly the way you want it.
Choose the configuration that fits your build and take control of your fuel delivery with a system engineered for performance, versatility, and durability.
