2006.5-2007 Duramax LBZ Fuel Systems

The Titanium Signature Series diesel fuel System was engineered by FASS Diesel Fuel Systems to be the top performing, longest lasting, quietest and...

The Titanium Signature Series diesel fuel System was engineered by FASS Diesel Fuel Systems to be the top performing, longest lasting, quietest and...

The Titanium Signature Series diesel fuel System was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable af...

The Titanium Signature Series diesel fuel System was engineered by FASS Fuel Systems to be the top performing, longest lasting and most reliable af...

Duramax diesel engines do not come with a factory System, this is why Duramax owners see such great performance and economy gains after installing ...

Perfect for the shop or keeping your garage stocked, each FASS Fuel FP3000 contains two (2) (XWS3002) Extreme Water Separators and two (2) (PF3...

When the fuel temperature drops below 34° Fahrenheit, the thermostatically controlled High Output Fuel Heater Disk will automatically power on. Fue...

Our Titanium Series Electric Heater Kits are an upgrade for FASS Systems being used in extremely cold climates. Each FASS Titanium Series System ha...

Fass fuel systems are a great upgrade for your truck, but after miles and miles of use, like your OEM fuel pump, they may go. Keep yours on the roa...

Our Drop-In Series Electric Heater Probe Kits are an upgrade for FASS Systems being used in extremely cold climates. Each FASS Drop-In Series Syste...

The Fass FS-2001 is a water separator filter that removes emulsified water. This filter is only for use with the blue base titanium series and red ...

A replacement element for our FASS Electric Heater (HK-1001). This item is intended for replacement parts only.

Replacement heater element for the HKDIFSHK1001 Heater Kit for the FASS Drop-In Series Systems.

The new XWS1002 MUST be used in conjunction with the PF3001XL, the new filters cannot be used in combination with the FF-1003 or FS-1001.When repla...

The FASS Diesel Fuel Systems High Flow Adjustable Fuel Pressure Regulator was engineered to accurately adjust fuel pressure in applications up to 6...

Sump kits lower the suction point and gather all your tanks fuel to one central location to maximize the usage of available fuel. This package incl...

Our FASS Fuel Systems 5/8” Convoluted Suction Tube only is intended to upgrade your existing Bulkhead Fitting (STK1002) to pull fuel from your fact...

Our FASS Fuel Systems Bulkhead Fitting is machined from 6061 T-6 Billet Aluminum and a Viton suction tube is designed to function as both a suction...