Engine GasketThis gasket is an aftermarket replacement sealing element used on a forklift engine at one of the bolted joints such as a cover, manifold, or housing flange. Forklift engines run hard duty cycles, and bolted joint gaskets dry out and weep over time, especially around the timing cover, valve cover, and water passages. Service technicians replace these during reseal jobs, leak diagnosis, and scheduled overhauls. Independent forklift repair shops favor the aftermarket version because gasket replacement is a labor heavy job where parts cost discipline keeps the customer ticket reasonable.Aftermarket replacement part, cross-references original part number AC1-11173-059-0.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC1-11173-059-0, ac1-11173-059-0, AC1111730590, ac1111730590 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.