
- FASS Whisper Technology: Developed to reduce pump noise without sacrificing flow, this technology uses tighter tolerances and a high-quality, military-spec coating for the quietest operation possible.
- Performance Radius Cuts (PRC): Unlike competitors who use restrictive, 90-degree fittings, FASS utilizes an advanced machining technique that creates smooth-flowing cuts within the pump housing. This prevents the reintroduction of air and vapor and eliminates stagnant fuel pockets.
- Mass Flow Return (MFR): This patented technology continuously polishes your fuel by returning unused fuel, after it has been filtered, back to the tank. This ensures your truck is always running on the freshest, cleanest fuel possible.
- Bolt-On Installation: Say goodbye to drilling or welding. The included bolt-on brackets use your factory bed bolts for a quick, secure, and durable installation.
- No-Drop Fuel Tank Sump: The included sump kit features a single-bolt design that makes installation a breeze. It provides a reservoir of fuel at the bottom of the tank, ensuring a consistent supply and maximizing fuel range.

Give your high-horsepower Duramax the fuel it deserves with the FASS NDTSC11165G No-Drop Kit Titanium Series 165GPH Fuel System & Sump. This is the ultimate aftermarket filtration system for your 2011–2014 GM 6.6L Duramax LML, engineered to be the most reliable and long-lasting system on the market. Rated at a robust 165 gallons per hour, it's designed specifically for trucks pushing 600–900 HP. The system's advanced filtration removes over 99% of water, as well as air and vapor, while filtering debris down to a microscopic 2 microns. This level of purity protects your costly injection pump and injectors, extending their life and ensuring your truck performs at its best. Best of all, the No-Drop Kit simplifies installation by including the FASS Fuel Sump, so you can forget about dropping your fuel tank.
FASS Whisper Technology: Developed to reduce pump noise without sacrificing flow, this technology uses tighter tolerances and a high-quality, military-spec coating for the quietest operation possible.
Performance Radius Cuts (PRC): Unlike competitors who use restrictive, 90-degree fittings, FASS utilizes an advanced machining technique that creates [...]
- FASS Whisper Technology: Developed to reduce pump noise without sacrificing flow, this technology uses tighter tolerances and a high-quality, military-spec coating for the quietest operation possible.
- Performance Radius Cuts (PRC): Unlike competitors who use restrictive, 90-degree fittings, FASS utilizes an advanced machining technique that creates smooth-flowing cuts within the pump housing. This prevents the reintroduction of air and vapor and eliminates stagnant fuel pockets.
- Mass Flow Return (MFR): This patented technology continuously polishes your fuel by returning unused fuel, after it has been filtered, back to the tank. This ensures your truck is always running on the freshest, cleanest fuel possible.
- Bolt-On Installation: Say goodbye to drilling or welding. The included bolt-on brackets use your factory bed bolts for a quick, secure, and durable installation.
- No-Drop Fuel Tank Sump: The included sump kit features a single-bolt design that makes installation a breeze. It provides a reservoir of fuel at the bottom of the tank, ensuring a consistent supply and maximizing fuel range.