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Sierra 18-2003 Marine Oil Seal for Mercruiser Stern Drive

Part of: Sierra Oil Seal for Yamaha Outboard Lower Unit

Other options in this family: Sierra 18-2001 Sierra 18-2061 Sierra 18-2062 Sierra 18-0267 Sierra 18-2029

Manufacturer

Picture for manufacturer Sierra

Part Number

18-2003
13 reviews
Sale Price

$18.34

In Stock (10+)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-2003 is a premium marine oil seal designed specifically for Mercruiser stern drive applications. This essential component provides reliable sealing protection for stern drive shafts, preventing oil leaks and protecting critical drive components from water intrusion and contamination.

Key Specifications:

  • Outer Diameter: 3 inches
  • Shaft Size: 2-1/4 inches
  • Seal Thickness: 0.437 inches
  • Material: Durable rubber construction for marine environments
  • Application: Mercruiser stern drive shafts

Engineered from high-quality rubber compounds that resist saltwater corrosion, oil degradation, and temperature extremes, this seal ensures long-lasting performance in demanding marine conditions. Sierra International is a trusted name in marine replacement parts, delivering OEM-quality components for reliable repairs and maintenance.

Arrangement of checkout field sets is counter-intuitive. I almost bailed twice.You should consider consulting a UX expert to streamline your user experience.

Went well overall. I hope these fit my truck which are larger than the generic applications that fit 25 other vehicles except my truck. Every application I have received so far are about 2/3eds the size they should be for a truck application. Hope I won't

Great price

I hop eit doesn't take too long to arrive =)

prices are definitely cheaper than everyone else for the part I ordered. Arrived very quickly also.

Very easy and convenient. Shipping was a bit stiff, but this isn't the lightest package either.

Best price on the net for the LC-1 wideband. It shipped the next day as well!

Received my product, it's just want I ordered. The shipping was fast too. Good for me!

good price

The prices are great. Shipping is so so, but that's normal for Alaska

Great

good

Excellent!

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