This practical temperature sensor is core replacement accessory for bus engines. It continuously detects actual engine operating temperature and feeds accurate data back to vehicle control and instrument system. Drivers can clearly know engine thermal condition and avoid overheating troubles during long distance passenger transport. Adopting premium industrial materials and fine sealing treatment, it runs steadily under long-time continuous working conditions. Complying with bus spare part standards, it owns sensitive induction, convenient mounting and long service life for daily bus maintenance.