Description
Overview
The FASS Adjustable Diesel Fuel Lift Pump 165GPH is part of the FASS Fuel Systems Signature Series (ADJ Fuel System Series), engineered as one of the most versatile high-performance fuel systems available for the 2010-2014 Dodge Cummins 6.7L. Under part number FASD05165G, this dedicated fuel system is built to deliver clean, consistent diesel to demanding builds while giving you the freedom to dial in exactly the pressure your engine needs. It is sold as each and finished in black.
What sets this system apart is its adjustability. Rated at 165 gallons per hour, it uses the same proven motor found in the FASS Titanium Signature Series, then adds tunable fuel pressure so you can customize fuel delivery for race or competition diesel engines. That makes it an ideal match for moderate to extreme horsepower applications in the 600-900 HP range.
Key Benefits
To help maintain fuel pressure when it matters most, FASS built in a boost compensation port. Air pressure drawn from your intake manifold raises fuel pressure under full throttle, so your engine keeps getting the fuel it demands during hard pulls and heavy load. This is the kind of feature that separates a purpose-built performance lift pump from a basic replacement unit.
- 165 GPH flow capacity to feed high-horsepower Cummins builds
- Adjustable fuel pressure to fine-tune delivery for race and competition setups
- Boost compensation port that raises fuel pressure under full throttle for consistent supply
- Same motor used in the FASS Titanium Signature Series
- Tuned for moderate to extreme 600-900 HP applications
- Includes a bulkhead fitting and suction tube
Bulkhead & Suction Tube
The kit includes a bulkhead fitting and suction tube machined from 6061 T-6 billet aluminum. This bulkhead functions as both a suction tube and a return, featuring a 5/8 inch suction tube along with a dedicated fuel return port. This new and improved design over the previous suction tube allows you to plumb your FASS return line directly, streamlining installation and keeping your fuel system clean and organized.
Fitment
This FASS Signature Series Adjustable Diesel Fuel System is designed for 2010-2014 Dodge Cummins 6.7L Truck and SUV applications. If you are chasing bigger numbers and want a fuel system that scales with your goals, the adjustable design lets you set pressure to suit your combination rather than being locked into a fixed output.
For diesel owners building toward serious power, this adjustable 165GPH system combines proven FASS motor technology, tunable pressure, boost compensation, and a billet aluminum bulkhead into a single, purpose-driven package built to keep your Cummins fed under the hardest conditions.







