Features: 1. Scope of Application: 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. 2. High Efficiency: Fan thermostat temperature switch activates the electric engine cooling fan at 185F and turns it off at 175F. 3. Function: Advanced thermostat temperature switch provides cooling air to the engine, helping maintain optimal operating efficiency. 4. Advantage: Electric cooling fan switch offers stable and precise control, low power consumption, efficient temperature regulation, environmentally friendly design, safe and reliable performance. 5. Size: Fan thermostat temperature switch with sending unit thread size 3/8-18 NPT, screw size 17mm (0.7in), compatible with 10, 12, 14, and 16-inch fans, including dual fan setups. Specifications: Item Type: Fan Thermostat Temperature Switch Sending Unit Thread Size: 3/8-18 NPT Screw Size: 17mm / 0.7in Fan On Temperature: 185F Fan Off Temperature: 175F Fitment: 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 Compatible with 10, 12, 14, and 16-inch fans, as well as dual fan systems Fixes common issues such as: - HVAC system not working - Fan operates in only one direction - Inability to adjust airflow - Dashboard warning alerts