Compatibility This coolant temperature sensor adapter is designed to work with any automotive application, providing a reliable and compatible solution for cars and trucks. Flexible probe size The 3/8 NPT probe is equipped with a 1/2 NPT adapter sleeve, allowing for easy installation and compatibility with different systems, a fit every time. Brass construction Crafted from brass, this threadin coolant, water, and oil temperature sensor probe ensures durability, longevity, and accurate temperature measurements for various liquids, including motor oil. Precise temperature control The included thermostat switch accurately activates the electric fan at a preset temperature, and it automatically turns off when the temperature decreases by 10 degrees, effectively and reliably maintaining cooling performance. Use scenarios Upgrading a street or vintage vehicle: a failing or incomplete temperature sensing setup to provide reliable coolant or oil temperature readings and consistent fan control. Performance or modified engines: monitor engine oil temperature more accurately and trigger fan cooling to prevent overheating during hard driving, towing, or track use. Diesel trucks or heavyhaul applications: integrate with existing cooling systems to maintain stable temperatures under load conditions, protecting engine reliability.