Fluid Control Thermostat, 3/8" NPTThis Billet Style Cast Aluminum Fluid Control Thermostat with 3 8 NPT ports allows the oil to bypass the cooler until it reaches 180F at which point the internal thermostatic valve will close and force 100% of the oil through the cooler while maintaining a constant pressure system. This process allows the engine transmission to achieve the ideal operating temperature quicker before passing the oil through the cooler. The unit can be rotated 180 to