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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
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.

Contact a Parts Pro

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

MerCruiser Trim Cylinder O-Ring Kits

(5 products)
  • Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits R, MR, Alpha One Gen II, Bravo - 25-87400A2

    Mercury

    Mercury – Trim Cylinder O-Ring Kit | Hydraulic Trim System | Rubber Seals | 87400A2

    $33.76 $39.75
    Learn More
  • Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits TR/TRS, 215H & II Drive - 25-47389A2

    Mercury

    Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits TR/TRS, 215H & II Drive - 25-47389A2

    $80.90 $95.25
    Learn More
  • Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits MC-I - 25-60342A3

    Mercury

    Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits MC-I - 25-60342A3

    $44.73 $52.67
    Learn More
  • Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits TR & TRS - 25-79871A1

    Mercury

    Mercury Mercruiser - Trim Cylinder O-Ring Kit - Fits TR & TRS - 25-79871A1

    $41.27 $48.58
    Learn More
  • Mercury Mercruiser - O-Ring Kit - Fits MC-I - 25-60342A2

    Mercury

    Mercury Mercruiser - O-Ring Kit - Fits MC-I - 25-60342A2

    $132.43 $155.92
    Learn More

An engine’s power trim system gives you the ability to tilt the drive’s angle out or in so you can adjust trim as the water conditions change.

We carry replacement Mercruiser power trim cylinders for a variety of engine models. These MerCruiser trim cylinder O-ring kits replace MerCruiser parts including R, MR, Alpha One, Gen II & Bravo drives. Each kit is for rebuilding one trim cylinder.