The VALEO 700055 is a high-quality sensor designed to precisely measure your vehicle's coolant temperature. Accurate temperature readings are crucial for the engine control unit (ECU) to manage fuel injection, ignition timing, and cooling fan operation, thereby preventing overheating and ensuring smooth engine running. Engineered to meet or exceed original equipment specifications, this sensor provides reliable and durable performance. Its robust construction resists the harsh under-hood environment, guaranteeing consistent function throughout its service life. Replacing a faulty coolant temperature sensor can resolve issues such as poor fuel economy, rough idling, and engine warning lights.