Integrated Housing Thermostat-180 Degrees Manufactured with OEM quality materials and safety standards by an OE Supplier. Stands up to even the most demanding automotive cooling systems. Manufactured with OEM specifications and processes. Bleeder Hole: No Bypass Diameter: 1.38 in Bypass Length: 1.62 in Center Bore Diameter: N/A Height: 5.20 in Installation Tool Included: No Jiggle Pin Included: No Mounting Depth From Flange: N/A Mounting Hardware Included: No Color: Silver Gasket Or Seal Included: No Material: Aluminum Steel Copper Mounting Hole Quantity: 4