Includes fan harness, 185° thermostat for 3/8" NPT to 1/2" NPT pipe adapter, Hella 40-amp weatherproof relay, fuse holder, and detailed instructions

The 185° stainless steel thermostat turns fan on at 185° and off at 165°. The thermostat should be mounted in a location exposed to coolant and that is grounded.
Designed for long life in any operating condition, this is the highest quality relay kit we sell.