Upgrade the Silverado Sierra 1500 2500 3500 Duramax Diesel factory plastic fuel filter housing to our DmaxStore Billet Fuel Filter Housing. Our filter housing was designed to thread right into the OEM fuel filter head and comes with a billet stainless steel drain valve that makes draining the filter housing a lot easier then the OEM style. The billet aluminum construction will hold up much better than the factory plastic unit that is prone to stripping and cracking after repeated use. This fuel filter housing is designed to hold the fuel filter in the same location.