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 Material: Aluminum Color: Silver Height: Approx. 5.5in Length: Approx. 4.25in Inlet Type: Female Thread Outlet Type: Hose Connect Outlet Size: Approx. 0.429in Minimum Free Flow Rate: 70 GPH Maximum Free Flow Rate: 80 GPH Minimum Pressure Rate: 125 PSI Maximum Pressure Rate: 125PSI Replaces Part Numbers: Fit for Mercruiser - 861156A1 & 807949A1 861156A1 Fit for Sierra - 18-35433 Fit for Mallory - 9-35433 Fit for Pro Torque - PH500-M014 Applicable Engine Models: 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. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!