The ACDelco GM Original Equipment Engine Intake Manifold Gasket is a GM-recommended replacement for your vehicles original component. The Engine Intake Manifold Gasket seals the intake manifold to the cylinder head intake ports. It prevents the loss of fuel/air mixture from the intake manifold and prevents oil/coolant leakage from the engine and also prevents dirt/debris from entering into the engine and intake ports. This original equipment engine intake manifold gasket has been manufactured to fit your specific GM vehicle, providing the same performance, durability, and service life you expect from General Motors.