This timing cover gasket seals the joint between the engine block and the timing cover, preventing oil leakage from the front of the engine. It sits at the front of the crankshaft area, where it contains lubricating oil around the timing gears and chain. A degraded gasket allows oil to seep past the cover, which can lead to oil loss and contamination of the engine compartment. This replacement gasket is manufactured to match the original profile and thickness, so it seats correctly in the cover groove without requiring additional sealant. On reinstallation, clean both mating surfaces and tighten the cover bolts evenly to the specified torque.