Don't see what you're looking for? Give us a call at
FASS Diesel Fuel Systems are engineered, manufactured, and assembled in the U.S.A., and we wouldn't have it any other way. Diesel Performance Products aren't just an accessory; they are a way of life; As is the reliability of an American Made product. FASS provides the cleanest fuel to the vehicles powering our great nation's infrastructure. Whether it's a Class 8 Semi hauling Pittsburgh Steel or a Diesel Pickup in cattle country, FASS systems are built to last. Constructed from 6061 T-6 Aircraft Quality Aluminum and boasting such proprietary features as FASS Silencing Technology (FST), Performance Radius Cuts (PRC), and Mass Flow Return (MFR), FASS is truly a step above the rest, in both cutting edge technology and quality.