This valve cover gasket seals the joint between the valve cover and the cylinder head on the host tractor. It prevents oil leakage and keeps contaminants out of the valvetrain. A degraded gasket allows oil to seep past the cover, which can lead to low oil pressure and contamination of the engine exterior. This part is manufactured by AGCO to match the original seal profile and material specification, ensuring it compresses to the correct thickness for a leak-free joint. On reinstall, clean both sealing surfaces and tighten the cover bolts in the sequence and to the torque value specified for the engine.