Feature:1. Part Number: Replacement for Mercruiser 861678A, 861678A1, 97401, 97401A2, 97401A8, 8M0058164; Replacement for OMC 509404 and more.2. Applicable Model: Replacement for Sierra; Replacement for Mallory; Fit for small block engines 5.0, 305 and 5.7, 350 engines.3. High Performance: The fuel pump delivers high pressure fuel to the fuel manifold to ensure a continuous supply of fuel to the fuel injectors.4. Ideal Replacement: Direct replacement for your old or damaged fuel pump. Easy and fast installation, no complicated operations are required.5. Durable Construction: Made of premium metal alloy material, rugged and durable, ensures high reliability and stable performance.Specification:Item Type: Mechanical Fuel PumpMaterial: Metal AlloyReplace Part Number:Replacement for Mercruiser 861678A, 861678A1, 97401, 97401A2, 97401A8, 8M0058164Replacement for OMC 509404Replacement for Sierra 18 7283Replacement for Mallory 9 35423, M60600, 42725A3, M61073Fitment:Fit for small block engines 5.0, 305 and 5.7, 350 enginesFit for 200 6218462 and UPFit for 200/5.0L B525982 and UPFit for 228 6218462 and UPFit for 230 Inboard 5907058 and UPFit for 230/5.0L Inboard 5907058 and UPFit for 230 6218462 and UPFit for 230/5.0L LX B525982 and UPFit for 260 6218461 and UPFit for 260/5.7L B525982 and UPFit for 260 Inboard 5907058 and UPFit for 260/5.7L Inboard 5907048 and UPFit for 5.7L F025000 and UPFit for 300MR/TRS 6668677 and UPFit for 350 (Magnum) A635178 and UPFit for 350 (Mag Tourney Ski) D505450 and UPFit for 898 6218462 and UPFit for 5.7 (Ski) A338553 and UPFit for 5.7 (Ski) B514627 and UPFit for 5.7L Bravo 350 B525982 and UP.Package List:1 xMechanical Fuel Pump3 x Gasket Note:1. Please double check the part number of your item, matching information is for reference only.2. If you are unsure of the item, please contact us before buying to avoid unnecessary return, thanks!