When installing a FASS Industrial Series System on a late-model Paccar MX-13 engine without a frame-mounted water separator, our new PAK2001 Kit allows the FASS return and feed lines to be easily adapted to the factory fuel module. This kit includes fittings to adapt...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

The Titanium Signature Series diesel fuel system was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable aftermarket filtration system in the diesel industry. Rated at 140 gallons per hour and backed by our limited lifetime warranty the...

FASS Fuel Systems Xws-3002Xl Extreme Water Separator (Xws-3002Xl). Our New More Efficient Extreme Water Separator Is Rated at 2 Microns Absolute. The Reason Our Water Separator No Longer Has A Drain Is Because The Filter Element Itself Traps The Water. The new XWS-3002XL Must...