Features: 1.Replacing part numbers for reference: 861156A1 807949A1 18?35433 9-35433, etc. 2.80 GPH maximum free flow rate, meets or exceeds OEM specifications, can directly replace or repair the previous old or broken one. 3.The "heart" of the fuel supply system, provides the fuel system with a specified pressure and flow rate of fuel. 4.The internal parts of the electric fuel pump are very precise, can brings better engine performance. 5.Simple plug & play installation without cable wiring, features stable performance, high reliability. Specification: 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: 125PSI_x000D_ _x000D_ _x000D_ _x000D_ Replaces 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-M014_x000D_ _x000D_ _x000D_ _x000D_ Applicable Engine Models:_x000D_ Fit for V6 & V8 Engine Models 305, 350, 377, 454, 502 EFI Note: Please double check the part number of your item, matching information is just for reference._x000D_ If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!