2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - charged - WT Duramax - MFI - OHV - Master Set - Contains all gaskets and seals required for the installation of fuel injectors guaranteed to replace your current 2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - charged - WT Duramax - MFI - OHV - Master Set - Contains all gaskets and seals required for the installation of fuel injectors. 2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover comes new OEM 2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover aftermarket new 2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover of remanufactured 2004 Chevrolet Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - charged - WT Duramax - MFI - OHV - Master Set - Contains all gaskets and seals required for the installation of fuel injectors.