Description
Overview
The FASS Titanium Signature Series Plus is the next evolution of the popular Titanium Signature Series Fuel System, engineered specifically for the 2015-2016 GMC Sierra and Chevrolet Silverado Duramax 6.6L. Built to be the top-performing, longest-lasting, and most reliable aftermarket filtration system in the diesel industry, it delivers clean, air-free fuel to your injection system while supporting serious power builds from 600 all the way up to 1000 horsepower.
What sets the Plus apart is the attention to installation detail and finish. It comes equipped with ORB (O-Ring Boss) fittings, 6061 aluminum black anodized fittings, and matching black fuel line for an ultra-clean, factory-plus appearance under the hood. The pump housing itself is machined from 6061 T-6 billet aluminum in a black finish, so the entire system looks as purposeful as it performs.
Key Benefits
Duramax diesel engines are well known for fuel-related injector failure issues, and FASS filtration systems are designed to eliminate exactly those problems. The Titanium Signature Series Plus provides advanced filtration that protects your Duramax injection system and effectively extends the life of both the injection system and the injectors. A 2-micron filtration rating, a built-in water separation filter, and the patented FASS air/vapor removal process work together to keep contaminants, water, and entrained air out of your fuel supply.
Rated at 165 gallons per hour, this system provides ample fuel volume to feed a healthy stock engine or an aggressive performance build. Whether you are towing heavy, running upgraded injectors, or chasing bigger numbers, the flow capacity is there to support up to 1000 HP without starving your engine for fuel.
- 165 GPH flow rating capable of supporting up to 1000 HP
- 2-micron filtration for superior injector and pump protection
- Built-in water separation filter to remove damaging moisture
- Patented FASS air/vapor removal process for cleaner, more consistent fuel delivery
- ORB fittings, black anodized 6061 aluminum fittings, and black fuel line for an ultra-clean install
- Durable 6061 T-6 billet aluminum construction in a black finish
Fitment
This dedicated fuel system is engineered for the 2015-2016 Duramax 6.6L in Silverado, Sierra, and truck/SUV applications, in the 600-1000hp range. It is sold as each and carries the FASS limited lifetime warranty, giving you long-term confidence in your investment.
Why the Titanium Signature Series Plus
If you want the cleanest possible installation combined with proven FASS filtration and flow, the Titanium Signature Series Plus delivers. It brings together premium billet construction, advanced multi-stage filtration, and the volume needed for high-horsepower Duramax builds—protecting your injectors while feeding your engine the clean fuel it demands.








