Thermostat-192 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. Copper case and wax compound assures rapid response to temperature changes in the coolant. Bolts Included: No Bypass Diameter: 1.38 in Bypass Plate Diameter: 1.36 in Flange Diameter: 2.12 in Flange Diameter (With Seal): N/A Color: Silver Flange Thickness: 0.05 IN Gasket Or Seal Included: No Height: 2.35 IN Height Between Flanges: 1.62 IN Installation Tool Included: No Jiggle Pin Weep Hole: Yes Material: Stainless Steel Seal Type: O-Ring Sealing Flange Outside Diameter: 2.125 IN Start to Open Temperature: 192 Deg. F