Item Type: Electric Fuel Pump_x000D_Material: Aluminum_x000D_Color: Silver_x000D_Height: Approx. 5.5in_x000D_Length: Approx. 4.25in_x000D_Inlet Type: Female Thread_x000D_Outlet Type: Hose Connect_x000D_Outlet Size: Approx. 0.429in_x000D_Minimum Free Flow Rate: 70 GPH_x000D_Maximum Free Flow Rate: 80 GPH_x000D_Minimum Pressure Rate: 125 PSI_x000D_Maximum Pressure Rate: 125PSIReplaces Part Numbers:_x000D_Fit for Mercruiser - 861156A1 & 807949A1_x000D_861156A1_x000D_Fit for Sierra - 18-35433_x000D_Fit for Mallory - 9-35433_x000D_Fit for Pro Torque - PH500-M014Applicable Engine Models:_x000D_Fit for V6 & V8 Engine Models 305, 350, 377, 454, 502 EFI 1Replacing part numbers for reference: 861156A1 807949A1 18?35433 9-35433, etc. 280 GPH maximum free flow rate, meets or exceeds OEM specifications, can directly replace or repair the previous old or broken one. 3The "heart" of the fuel supply system, provides the fuel system with a specified pressure and flow rate of fuel. 4The internal parts of the electric fuel pump are very precise, can brings better engine performance. 5Simple plug & play installation without cable wiring, features stable performance, high reliability.1 xFuel Pump 2 x Gasket