Description
Overview
The FASS Titanium Signature Series Diesel Fuel System (Part No. TSD08165G) is engineered by FASS Fuel Systems to be the top-performing, longest-lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 165 gallons per hour and built for the 1998.5-2004 Dodge Ram Cummins 5.9L, this dedicated lift pump and filtration system delivers a steady, clean supply of fuel to your engine while protecting the components that keep it running.
Housed in a rugged 6061 T-6 billet aluminum body finished in black, the Titanium Signature Series is designed to handle moderate to extreme performance applications supporting builds in the 600-900 HP range. Operating at 16-18 PSI, it delivers enough volume to feed your Cummins through multiple fueling upgrades without running short on supply.
Advanced Filtration & Protection
Beyond raw fuel delivery, this system is about longevity. It offers advanced filtration benefits that help protect your injection system and extend the life of both your Bosch injection system and Bosch diesel injectors. An improved filtration rating of 2 microns, a built-in water separation filter, and FASS Fuel Systems’ patented air/vapor removal process work together to strip out water, particulates, and entrained air before they ever reach your injection components.
Key Highlights
- 165 GPH flow capacity — enough fuel to support multiple fueling upgrades
- Operating pressure of 16-18 PSI, dialed in for moderate to extreme 600-900 HP applications
- Constructed from durable 6061 T-6 billet aluminum with a black finish
- Improved 2-micron filtration rating for superior injector protection
- Built-in water separation filter to keep damaging moisture out of your fuel
- Patented FASS air/vapor removal process for cleaner, more consistent fuel delivery
- Backed by a limited lifetime warranty
Fitment
This kit is designed specifically for 1998.5-2004 Dodge Ram Cummins 5.9L trucks and SUVs. It is sold as a complete kit under Part No. TSD08165G. Please note: if the truck has been retrofitted with an in-tank system, you will need the TSD07165G kit instead.
Why Upgrade?
Aftermarket fuel systems are important for both daily drivers and high-performance applications, whether you’re looking to improve fuel economy or increase horsepower and torque. By combining high-volume delivery with class-leading filtration, water separation, and air/vapor removal, the Titanium Signature Series helps your 5.9L Cummins run cleaner, stronger, and longer. Whether you’re chasing efficiency on the highway or feeding an aggressively tuned build, this FASS system provides the reliable, protected fuel supply your engine deserves.


