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Earn up to 4.5% Back on Purchases
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Free Shipping over $99
Earn up to 4.5% Back on Purchases
Assistance From Boat Parts Experts

Free Shipping over $99

Orders $99 or more ship free within the contiguous U.S.
May not apply to engines or oversized orders.

Shipping Policy

Free Shipping over $99

Orders $99 or more ship free within the contiguous U.S.
May not apply to engines or oversized orders.

Shipping Policy

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Earn up to 1.5 points for every $1 spent. That’s up to 4.5% back that you can redeem and save on future orders. Excludes engine & lower unit sales.

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PartsVu Blue Rewards

Earn up to 1.5 points for every $1 spent. That’s up to 4.5% back that you can redeem and save on future orders. Excludes engine & lower unit sales.

Start Saving Now

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Our top priority is your ultimate satisfaction, and to get you back to boating as soon as possible.

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Ready To Serve

Our top priority is your ultimate satisfaction, and to get you back to boating as soon as possible.

Contact a Parts Pro

SALE - Sierra Marine 4 Stroke Marine Engine Oil

(45 products)
  • Sierra - SYNTHETIC BLEND 4-CYCLE CATALYST INBOARD/STERNDRIVE ENGINE OIL 25W-40 - Quart - 9440CAT2

    SIERRA

    Sierra - SYNTHETIC BLEND 4-CYCLE CATALYST INBOARD/STERNDRIVE ENGINE OIL 25W-40 - Quart - 9440CAT2

    $14.49 $14.79
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  • Sierra - 25W-40 FC-W Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - 5 Quart - 4 Pack - 1894404

    SIERRA

    Sierra - 25W-40 FC-W Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - 5 Quart - 4 Pack - 1894404

    $293.00
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  • Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 12 Pack - 1894402

    SIERRA

    Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 12 Pack - 1894402

    $168.00
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  • Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 6 Pack - 1894402

    SIERRA

    Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 6 Pack - 1894402

    $84.00
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  • Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 2 Pack - 1894402

    SIERRA

    Sierra - 25W-40 Synthetic Blend 4 Stroke Inboard/Sterndrive Engine Oil - Quart - 2 Pack - 1894402

    $28.00
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  • Sierra - 10W-30 Synthetic 4 Stroke Engine Oil - Quart - 12 Pack - 96902

    SIERRA

    Sierra - 10W-30 Synthetic 4 Stroke Engine Oil - Quart - 12 Pack - 96902

    $283.68
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  • Sierra - SAE 25W-40 FC-W 4 Stroke Marine Engine Oil - Quart - 12 Pack - 94002

    SIERRA

    Sierra - SAE 25W-40 FC-W 4 Stroke Marine Engine Oil - Quart - 12 Pack - 94002

    $168.60
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  • Sierra - 25W-40 FC-W 4 Stroke Stern Drive Engine Oil - 5 Quart - 2 Pack - 9400CAT4

    SIERRA

    Sierra - 25W-40 FC-W 4 Stroke Stern Drive Engine Oil - 5 Quart - 2 Pack - 9400CAT4

    $132.88
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  • Sierra - SAE 25W-40 FC-W 4 Stroke Marine Engine Oil - Quart - 94002

    SIERRA

    Sierra - SAE 25W-40 FC-W 4 Stroke Marine Engine Oil - Quart - 94002

    $14.05 $15.89
    Learn More