Integrated Housing Thermostat-185 Degrees w/ Seal 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. Offset design, air relief valve, and OEM style seals included where applicable. Bypass Diameter: 1.38 in Bypass Length: 1.02 in Gasket/Seal Material: Rubber Installation Tool Included: No Number Of Outlet Ports: 1 Number Of Seals: 1 Outlet Diameter: 1.68 in Prop 65: WARNING: Cancer and Reproductive Harm - www.p65WARNINGs.ca.gov Gasket Or Seal Included: Yes Gasket Type: O-Ring Grade Type: Regular Material: Plastic, Steel, Copper Mounting Hardware Included: No