If you are looking to dress up your 2003-2005 5.9 Cummins this is the first piece of the puzzle! Remove the cheap plastic valve cover / CCV filter and replace it with this sweet billet aluminum piece. It includes a billet oil fill cap and baffled CCV canister with AN type fittings. If you would like our braided stainless vent line kit, it is sold separately, Part # GRD00170. By removing the factory CCV filter you no longer need to purchase expensive filters when they get plugged and it also keeps crankcase pressures in check at high RPMs. All parts including the oil fill cap are manufactured from solid 6061 T6 billet aluminum. Valve cover includes all stainless hardware and sealing surfaces are sealed with O-ring seals. The cover comes with a machined finish and is available polished. THIS COVER WILL ONLY WORK WITH 2003-2005 5.9 CUMMINS. ALL 2006-2007.5 CUMMINS USE THE SAME COVER AS A 6.7 CUMMINS Key Features: - ALL 2006-2007.5 CUMMINS USE THE SAME COVER AS A 6.7 CUMMINS GRD59CM3005 Compatible with: 03-05 5.9 Cummins Billet Aluminum Valve Cover, Cummins, Engine & Engine Parts