Fleece Performance 11-16 GM 2500/3500 Duramax Auxiliary Heated Fuel Filter Kit

The Fleece Performance 11-16 GM 2500/3500 Duramax Auxiliary Heated Fuel Filter Kit is a comprehensive upgrade designed for the 2011-2016 LML 6.6L Duramax. It replaces the factory fuel filter housing with a new filter base that features an integral high-flow fuel heater, Water-In-Fuel (WIF) sensor, and a Donaldson spin-on canister style filter. The kit eliminates the factory fuel primer bulb and is intended for use with a positive pressure lift pump, such as the Fleece PowerFlo lift pump or an equivalent frame-mounted pump. This setup enhances cold-weather performance by preventing fuel gelling through the high-flow fuel heater, which activates at temperatures around 28.4F and off at approximately 48.2F. The included components—pre-formed hoses, wiring harness, fuse taps, and sensor—ensure a complete, reliable installation for improved fuel system efficiency and durability.

Designed specifically for 2011-2016 Duramax trucks, this kit is compatible only with the 6.6L LML engine and is intended for direct replacement of the factory filter housing. It is ideal for applications requiring consistent cold-weather operation, such as towing or daily driving in low temperatures. The installation involves mounting the new filter base in the factory location, replacing the original housing, and connecting the supplied hoses and wiring. The kit includes the filter base with integrated heater, Donaldson 3-micron filter, water separator, and all necessary fittings and sensors. This upgrade provides a robust, high-performance solution for Duramax owners seeking improved fuel filtration and cold-weather reliability.