This Billet Style Cast Aluminum Fluid Control Thermostat with 1/2” NPT ports allows the oil to bypass the cooler until it reaches 180°F 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 change flow direction and includes a universal mounting bracket for 4 different mounting positions.Derale Fluid Control Thermostat with Mount Brackets, 1/2" NPT 25792Specifications: Description_SHO Engine Adapter Description_INV Engine Adapter Description_ASC Bypasses cooler until fluid temperature reaches 180°F Description_ASC Provides quicker warm-up temperatures Description_ASC Perfect for cold weather climates Description_ASC Can be rotated 180° to switch flow direction Description_ASC Flows up to 20 gallons per minute Description_ASC Rated up to 200 psi Description_ASC Ultra bright finish Description_ASC Billet style design Description_ASC 1/2" NPT inlet/outlet ports Description_KEY fluid control thermostat Description_KEY thermostat Description_KEY fluid controller Description_KEY 1/2" npt fluid control thermostat Description_KEY fluid bypass Description_KEY fluid bypass kit Description_DES Fluid Control Thermostat with Mount Brackets, 1/2" NPT Description_EXT Fluid Control Thermostat with Mount Brackets, 1/2" NPT Description_MKT This Billet Style Cast Aluminum Fluid Control Thermostat with 1/2” NPT ports allows the oil to bypass the cooler until it reaches 180°F 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 change flow direction and includes a universal mounting bracket for 4 different mounting positions. Description_FAB Fluid Control Thermostat with Mount Brackets, 1/2" NPT Description_DEF Engine Coolant Thermostat