奔驰 水温传感器 0009050600 发动机精准控温 原厂替代可靠耐用

Mercedes-Benz original-standard coolant temperature sensor (OEM number 0009050600) installed in the radiator or engine block coolant passages; real-time monitoring of coolant temperature and transmits signal to ECU to precisely adjust fuel enrichment, ignition timing, and cooling fan operation, keeping the engine at optimal temperature. Fits Mercedes-Benz C-Class, E-Class, S-Class, and ML-series models. Installation is relatively easy; labor about 0.5-1 hour; drain coolant and replace sealing ring. If engine hard starts, idle is unstable, or temperature gauge reads abnormally, sensor replacement is typically required.