This brand-new water coolant temperature sensor switch carries part number AL81358. It suits 4039, 4045, 6068 engines and tractor models 1654, 2054, 5820, 6100. It precisely detects engine coolant temperature and completes stable signal switching. Made of high-quality sensing parts and durable casing, it delivers steady performance under harsh farm working conditions. It meets factory specifications and serves as an ideal direct replacement for old or faulty units.