.This durable coolant level sensor is an essential accessory for truck cooling systems. It keeps track of remaining coolant volume in real time and transmits effective data to vehicle control panel. It can remind drivers timely when liquid level is insufficient, effectively avoid engine overheating failure and protect core engine components. Made of high-quality insulated materials with excellent sealing performance, it resists long-term liquid erosion and temperature change, keeping reliable working state for long haul transportation.