ThermostatThis thermostat regulates engine coolant flow, helping the cooling system reach and hold proper operating temperature on forklift powertrains. Maintaining the correct thermostat opening point protects against both overheating and excessive cold-running wear, which can shorten engine life and reduce fuel efficiency. Supplied as an aftermarket replacement under part number AC21200-C6000A, this component is built to match the original specifications and interchangeable with the equivalent OEM unit. It is a wear item that should be replaced whenever symptoms of stuck-open or stuck-closed behavior appear, or as part of routine preventive maintenance. Inspect the housing, gasket, and surrounding hoses at the same time to keep the cooling circuit reliable across daily shift work.Aftermarket replacement part, cross-references original part number AC21200-C6000A.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC21200-C6000A, ac21200-c6000a, AC21200C6000A, ac21200c6000a ⚠ 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.