Gasket, Cylinder Head (Not Shown)Specifications Item Description This cylinder head gasket is an engine component designed for the Kubota engine assembly used in JLG 450AJ and 450A aerial work platforms. The gasket creates a critical seal between the cylinder head and engine block to maintain compression and prevent coolant or oil leakage. This replacement part is compatible with machines in serial number range 0300201991 through 0300241743 and subsequent ranges, with one gasket