Compatible With BMW For 4 Convertible (F33, F83) Coupe (F32, F82) 2016-2026 Engine Coolant Thermostat Housing 11537644811 TH705K1 CTM-BM-051 55866 B4247107 94.932A2 8192933 92933. Function: The engine coolant thermostat housing has reliable heat dissipation performance, regulates the coolant flow through the radiator, controls the engine operating temperature, and prevents overheating. Material: The thermostat is made of ABS material, which is heat-resistant and impact-resistant, keeping the engine at a reliable operating temperature, thereby improving the overall performance and efficiency of the engine, extending its service life, and reducing replacement frequency. Product Features: This automotive coolant thermostat effectively controls engine temperature by regulating coolant flow to improve cooling efficiency, protect engine performance, and ensure smooth driving. Warm Reminder: To ensure you receive the correct product, please verify that your part number matches the one in the product description. If you have any questions about our products, please feel free to contact us!