Thermostat Switch Assy For 260cc300cc400cc 520cc 550cc ATV Quad Parts Part No 22919 This thermostat switch assembly is designed to fit models with engine displacements of 260cc, 300cc, 400cc, 520cc, and 550cc.It functions as a key component in regulating engine temperature by controlling the cooling system's.The unit is engineered for direct replacement, ensuring compatibility with specifications.Constructed for durability, it supports performance under normal operating conditions.The part number for this assembly is 22919. Compatibility Disclaimer: This is an aftermarket replacement part.Any brand names or model designations mentioned are used solely for the purpose of demonstrating compatibility.