2000-04 Polaris Sportsman 400 500 Radiator Fan Thermal Switch Sensor - 4010161

This is the exact same thermal switch as the Polaris unit, except without the high markups. Same OEM manufacturer as the Polaris branded unit. Buy with confidence as this sensor plugs right in and has the exact same temp settings as stock. This is not a cheap Chinese knock-off, it is manufactured in the USA by the same supplier. Replaces Polaris part number 4010161 for all 2000-04 Sportsman 400 and 500′s. This unit is located on the bottom of the radiator on the right hand side and controls the cooling fan operation.