General Motors GM Genuine Parts 12633904 Timing Cover Gasket;

The ACDelco GM Original Equipment Engine Timing Cover Gasket is a GM-recommended replacement for your vehicle’s original component. This gasket works with the metal cover installed over the engine timing chain to create a tight seal that prevents engine oil from spraying or leaking onto your vehicle’s engine, while keeping dirt and debris out of sensitive engine components. This original equipment engine timing cover gasket has been manufactured to fit your GM vehicle, providing the same performance, durability, and service life you expect from General Motors.