Billet Aluminium Oil Thermostat -10ORB x 4, 1/8"npt port.
AF64-4111
 

Perfect for use with Aeroflow oil coolers, this Billet Aluminium thermostat helps maintain engine oil temperature by holding the oil until it reaches operating temperature at (82°C) 180°F when the thermostat is fully open to allow full flow to the oil cooler. It adjusts flow according to oil temperature to maintain constant operating oil temperature.