Description
Overview
The FASS FASC09165G Adjustable Diesel Fuel System is a Signature Series lift pump engineered for the 2001-2016 GM Duramax 6.6L, delivering a full 165 gallons of diesel fuel per hour to support demanding builds. Part of the ADJ Fuel System Series, this kit is built to be one of the most versatile high-performance fuel systems available, giving you the ability to dial in adjustable fuel pressure to match the exact needs of your Duramax 6.6L application.
At the heart of the system is the same proven motor used in the FASS Titanium Signature Series, machined into a rugged housing of 6061 T-6 billet aluminum finished in black. Rated for moderate to extreme setups in the 600-900 HP range, it is designed to feed race and competition diesel engines while keeping fuel delivery consistent when your truck is working hardest.
Key Benefits
Adjustable fuel pressure from 1-20 PSI lets you customize fuel delivery for the street, the track, or all-out competition. To keep pressure stable under load, FASS integrated a boost compensation port — air pressure from your intake manifold raises fuel pressure at full throttle, maintaining fuel pressure exactly when it matters most. A built-in fuel pressure gauge port makes monitoring your system straightforward, and Whisper Technology helps keep operation quiet.
Highlights
- High-performance flow rated at 165GPH to support 600-900 HP builds
- Adjustable fuel pressure from 1-20 PSI for race and competition tuning
- Boost compensation port raises fuel pressure under full throttle
- Built-in fuel pressure gauge port for easy monitoring
- Whisper Technology for quieter operation
- Constructed from durable 6061 T-6 billet aluminum with a black finish
- Uses the same motor found in the FASS Titanium Signature Series
What’s Included
Sold as a complete kit, the FASC09165G comes with all mounting hardware needed for installation. Note that this is a fuel system only and must be used with your factory fuel filter, so plan your installation accordingly. FASS also recommends following their guidance for proper setup to achieve the best performance from the system.
Fitment
The FASC09165G is designed specifically for the 2001-2016 Duramax Truck/SUV equipped with the GM 6.6L diesel engine. Whether you’re upgrading a daily-driven Duramax or building a dedicated competition rig, this adjustable fuel system provides the flow, adjustability, and boost-referenced pressure control to keep your engine fed. Choose this configuration when you want a high-performance, adjustable lift pump built to the same standards as the FASS Titanium Signature Series, with the flexibility to fine-tune fuel pressure to your exact power goals.
