Description
Overview
The Titanium Signature Series Plus Fuel System from FASS Fuel Systems is purpose-built for 2015-2016 Chevrolet Silverado and GMC Sierra trucks equipped with the 6.6L Duramax diesel engine. Representing the next evolution of the popular Titanium Signature Series, the Plus variant is finished with ORB (O-Ring Boss) fittings, 6061 aluminum black anodized fittings, and black fuel line for a cleaner, more refined install under the hood. Constructed from 6061 T-6 billet aluminum and finished in black, this system is engineered to be one of the most reliable and longest-lasting aftermarket fuel filtration solutions available for the Duramax platform.
Rated to flow 165 gallons per hour, the Titanium Signature Series Plus is capable of supporting Duramax engines producing anywhere from 600 to 1000 horsepower, giving serious performance builds the fuel volume they need to run consistently and confidently. Whether you’re running a mild tune or pushing toward the top end of that power range, this system is designed to keep pace with demand.
Advanced Filtration & Engine Protection
Beyond raw flow capacity, the Titanium Signature Series Plus is built to protect the fuel injection system and extend the service life of injectors — a common weak point on Duramax engines when fuel-related contamination or aeration is involved. It delivers a 2-micron filtration rating, a built-in water separation filter, and FASS’s patented air/vapor removal process, all working together to deliver cleaner, more stable fuel to the injection system. By removing water, air, and vapor from the fuel before it reaches the injectors, this system directly addresses the fuel-related causes behind many common Duramax injector failures.
Fitment
This Titanium Signature Series Plus Fuel System is designed specifically for 2015-2016 Duramax 6.6L trucks and SUVs, including Chevrolet Silverado and GMC Sierra applications. Sold individually (each).
Highlights
- Fits 2015-2016 Chevrolet Silverado / GMC Sierra 6.6L Duramax trucks and SUVs
- Supports engine builds from 600 up to 1000 horsepower
- 165 gallon-per-hour rated fuel flow
- ORB fittings, black anodized 6061 aluminum fittings, and black fuel line for a clean install
- 2-micron filtration with built-in water separator
- Patented FASS air/vapor removal process
- Constructed from 6061 T-6 billet aluminum, finished in black
For Duramax owners who demand consistent fuel delivery, cleaner filtration, and long-term reliability, the Titanium Signature Series Plus delivers the performance foundation your 6.6L Duramax build depends on.







