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Mercury 40HP EFI Outboard Parts & Service Kits - 1999 - 2023

(45 products)
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  • Mercury - Screw (M6 x 25) - 10-4000330

    Mercury

    Mercury - Screw (M6 x 25) - 10-4000330

    $2.83 $4.00
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  • Mercury 818298T3 Outboard Magnesium Power Trim Anode - Fits Mercury/Mariner 30-40-50-55-60-75-90-115-All V-6 Optimax-Outboard Engines

    Mercury

    Mercury 818298T3 Outboard Magnesium Power Trim Anode - Fits Mercury/Mariner 30-40-50-55-60-75-90-115-All V-6 Optimax-Outboard Engines

    $29.37 $34.58
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  • Mercury 826134T3 Outboard Magnesium Side Pocket Anode - Fits Fits Mercury/Mariner 35-300 HP Outboards - Force 90 & 120 HP 1995 - Newer Outboards

    Mercury

    Mercury 826134T3 Outboard Magnesium Side Pocket Anode - Fits Fits Mercury/Mariner 35-300 HP Outboards - Force 90 & 120 HP 1995 - Newer Outboards

    (1)
    $14.37 $16.92
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  • STAINLESS STEEL WASHER (.406 x .750 X .105) - 12-856774

    Mercury

    STAINLESS STEEL WASHER (.406 x .750 X .105) - 12-856774

    $1.84 $2.60
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  • Mercury - Screw (M10 x 30) - 10-4000377

    Mercury

    Mercury - Screw (M10 x 30) - 10-4000377

    $3.26 $4.60
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  • STAINLESS STEEL SCREW (.437 - 14 x 1.250) - 10-825427

    Mercury

    STAINLESS STEEL SCREW (.437 - 14 x 1.250) - 10-825427

    $4.95 $7.00
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  • Mercury - Screw (M10 x 30) - 10-1996230

    Mercury

    Mercury - Screw (M10 x 30) - 10-1996230

    $1.70 $2.40
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  • Mercury - Screw - 10-897657055

    Mercury

    Mercury - Screw - 10-897657055

    $12.39 $17.50
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  • Mercury - Trim tab-std gc - 822157T03

    Mercury

    Mercury - Trim tab-std gc - 822157T03

    $110.00 $129.50
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A 1999 40 hp Mercury outboard may be a 2-stroke or early 4-stroke model depending on the exact serial number. Maintenance and parts should be matched by serial number, since fuel system, ignition, oil, and lower unit specifications can differ.

Our selection of Mercury outboard parts and service kits includes everything outboard owners need to maintain their Mercury 40HP EFI outboard engines (1999 to 2023 models).

Shop our complete selection of parts and service kits for Mercury 40HP EFI outboard engines. Our selection of certified outboard parts includes gaskets, thermostats, marine engine oil, spark plugs, oil filters, fuel filters, and more. Our service kits also combine everything you need for periodic outboard service into one convenient package. These kits are intended for Mercury 40HP EFI outboard engine models produced from 1999 to 2023.