Air Check Valve Secondary A.I.R. Injection Valve Adjustable:No Color/Finish:Black Inlet Size (in):0.875 In. Length:8 In. Material:Plastic and Aluminum Maximum Pressure Rating (psi):4.4 PSI Mount Hole Diameter:0.356 In. Outlet Size (in):0.716 In. Package Contents:1 Secondary Air Injection Check Valve, 1 Gasket Port Quantity:2 Valve Type:Check Working Temperature Range:-40 Deg. F. to 250 Deg. F.