2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - SL - Master Set - Contains all gaskets and seals required for the installation of fuel injectors guaranteed to replace your current 2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - SL - Master Set - Contains all gaskets and seals required for the installation of fuel injectors. 2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover comes new OEM 2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover aftermarket new 2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover of remanufactured 2001 GMC Pick-up Truck Engine Gasket Set - Valve Cover 6.6L Engine - SL - Master Set - Contains all gaskets and seals required for the installation of fuel injectors.