
- FASS Silencing Technology (FST): Experience an incredibly quiet operation. This exclusive technology uses precise radius cuts, tighter tolerances, and a military-spec coating on the aluminum base to minimize noise without compromising performance.
- Performance Radius Cuts (PRC): FASS is the only brand to use this advanced machining technique. PRC creates smooth-flowing cuts within the housing to prevent air reintroduction and ensure maximum fuel flow, unlike competitors' restrictive 90-degree fittings.
- Mass Flow Return (MFR): This patented technology continuously "polishes" your fuel. By returning filtered, unused fuel to the tank, it guarantees your engine is always running on the freshest, cleanest fuel possible.
- Bolt-On Brackets: The included brackets mount directly to your factory bed bolts, making installation quick and easy with no drilling or welding required.

When it comes to your custom-tuned 2017-2019 GM 6.6L Duramax L5P, a clean fuel system is critical for both performance and longevity. The FASS TS C13 140G Titanium Signature Series 140GPH Fuel System with Whisper Technology is engineered to be the most reliable and highest-performing aftermarket filtration system on the market. Rated at 140 gallons per hour, it's perfect for engines from stock to 500HP. This system provides advanced filtration, including an impressive 3-micron rating, a built-in water separator, and FASS's patented air/vapor removal process. This advanced cleaning process protects your expensive fuel system components and injectors, extending their life and ensuring your truck runs at its absolute best.
Key Features
FASS Silencing Technology (FST): Experience an incredibly quiet operation. This exclusive technology uses precise radius cuts, tighter tolerances, and a military-spec coating on the aluminum base to minimize noise without compromising performance.
Performance Radius Cuts (PRC): FASS is the only brand to use this advanced machining technique. PRC creates smooth-flowing cuts within the housing to prevent air reintroduction and[...]
- FASS Silencing Technology (FST): Experience an incredibly quiet operation. This exclusive technology uses precise radius cuts, tighter tolerances, and a military-spec coating on the aluminum base to minimize noise without compromising performance.
- Performance Radius Cuts (PRC): FASS is the only brand to use this advanced machining technique. PRC creates smooth-flowing cuts within the housing to prevent air reintroduction and ensure maximum fuel flow, unlike competitors' restrictive 90-degree fittings.
- Mass Flow Return (MFR): This patented technology continuously "polishes" your fuel. By returning filtered, unused fuel to the tank, it guarantees your engine is always running on the freshest, cleanest fuel possible.
- Bolt-On Brackets: The included brackets mount directly to your factory bed bolts, making installation quick and easy with no drilling or welding required.