Greatly protects the automotive cooling system equipment. When the system short-circuit current is too large, the circuit breaker automatically opens. This kit is designed to turn your electric fan on at 185 degrees and shut off at 175 degrees. The thermostat must be grounded through the threads to the engine in order for it to work, and the engine must be grounded. A thermostat can protect the engine from overheating or overcooling, thereby extending the vehicle's lifespan. Improving driving: An overheated engine can cause the oil to deteriorate, affecting the lubrication effect and increasing the risk of engine failure. A thermostat helps avoid this situation and improves driving performance. Increase vehicle performance: Appropriate engine temperature can improve engine performance, increasing vehicle power and acceleration. Rated voltage: 12V Contact switching current: 40A/14VDC Contact form: one set of normally open Universal fit for most cars, trucks, boats, yachts, caravans, etc. Works with any 12-volt system. Compatible with 265, 283, 305, 307, 327, 350, 383, 400, 396, 402, 427, 454, 472, 502, 260, 289, 302, 351W, 347, 352, 360, 390, 406, 427, 428, 429, 460, 351C, 351M, 400M, 273, 318, 340, 360, 361, 383, 400, 413, 426W, 440, 455, 330, 326 engines. Note: Installation guide not included. Professional installation is strongly recommended. Please verify specifications to ensure compatibility. Product may vary slightly due to batch differences, including minor color or design variations, which do not affect functionality. Accessories may vary in color and are supplied at random; specific colors cannot be requested. Color: As shown in photo Material: Metal + PP Package Contents: 1 x 175-185 Degrees Cooling Fan Thermostat Kit Only the above package content is included; other items are not part of this package. Note: Lighting and display settings may cause slight color differences between the image and the actual item. Measurement error allowed is +/- 1-3 cm.