This valve cover gasket seals the joint between the cylinder head and the valve cover on the host tractor engine. It prevents oil leakage from the valve train area and keeps contaminants out of the lubrication system. A compromised gasket allows oil to weep externally, which can lead to low oil level and eventual valve train wear if not addressed. This component is manufactured to the original geometry, matching the sealing surface profile of the cylinder head and the cover flange. On reinstallation, clean both mating surfaces thoroughly and tighten the cover bolts in the sequence and to the torque value specified for the engine.