Water Outlet Engine Coolant Water Outlet Air Vent (Bleeder Valve):No Bleeder Screw Included:No Bolt Hole Center To Bolt Hole Center:1.9 In. Bolt Hole Diameter:0.34 In. Bolt Hole Quantity:2 Bolts Included:Yes Color/Finish:Natural Gasket or Seal Included:Yes Housing Neck Angle (�):90 Deg. Inside Diameter:1.18 In. Material:Aluminum Maximum Height:3.5 In. O Rings Included:Yes Outlet Diameter (in):1.56 In. Outlet Quantity:1 Outlet Tube Length:9.5 In. Package Contents:Water Outlet with Gasket