17-19 Duramax L5P Black Market Performance CAT Fuel Filter Upgrade Kit 5 Inch Inlet 's now ship the REVO

's now ship the REVO software and PoD (Power on Demand) pre-loaded

Billet Construction

The Bully Dog GT 40420 features the all new patent pending Driving Coach feature

No surging

The compact storage container features a unique spiral track system that prevents the cover from coming into contact with itself as it opens and closes

17-19 Duramax L5P Black Market Performance CAT Fuel Filter Upgrade Kit 5 Inch Inlet 's now ship the REVONew Product Release!! Black Market Performance L5P Duramax Cat Fuel Filter Adapter, completely replaces the poorly designed restrictive factory fuel canister while adding better filtration, with a more affordable Cat fuel filter. Also Retains and reuses Factory Water in Fuel Sensor and Heater Kit Includes Cat Filter Adapter Cat Fuel Filter Quick Connect Fittings Install Bolts Install Instructions