Cylinder HeadSupplied as an aftermarket replacement built to interchange with the original equipment part, part number AC11042-B8657 is a cylinder head that sits at the top of the engine, sealing combustion pressure and housing the valvetrain. It typically ships to rebuild shops and fleet maintenance crews handling top-end engine overhauls who source by part number when a unit comes in for service. Forklifts run tough duty cycles in warehouses and yards, so wear items like this get replaced on a predictable cadence. Cross-reference AC11042-B8657 against the unit's service manual before ordering, and call SCR Forklift Parts in Whittier if you need help matching a serial number to the right revision.Aftermarket replacement part, cross-references original part number AC11042-B8657.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC11042-B8657, ac11042-b8657, AC11042B8657, ac11042b8657 ⚠ 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.