Walker Products Temperature Indicator Switches (TIS) and Coolant Temperature Senders (CTS) are precision manufactured from premium components in an ISO 9001-2008/TS16949 certified facility. They use a changing electrical resistance value to measure the engine coolant temperature and relay this information to the temperature warning light (TIS) or gauge (CTS) on the dashboard.

Walker Products Temperature Indicator Switches and Coolant Temperature Senders are designed to provide outstanding performance and are manufactured to meet and exceed all OEM (Original Equipment Manufacturer) specifications and test requirements. Walker Products specializes in the engineering, manufacturing, and distribution of automotive engine management components. Trust their award winning commitment to product quality when replacing the TIS or CTS in your car, truck, van, Jeep, CUV (Crossover Utility Vehicle) or SUV (Sport Utility Vehicle).