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$12.34
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The Sierra 18-0525 is a precision-engineered replacement oil seal designed for Mercury Marine and MerCruiser stern drive applications. Manufactured to meet or exceed OEM specifications, this seal provides a reliable barrier against oil leakage and contamination, helping protect internal engine components and extend service life.
Key Specifications:
Interchangeable With:
Backed by the SeaStar Solutions Two-Year Warranty, Sierra marine engine parts are trusted by boaters and marine technicians as a high-quality aftermarket alternative to OEM parts. This oil seal is part of Sierra's extensive marine engine parts catalog covering Mercury, MerCruiser, and a wide range of other popular marine engine platforms.
Easy
Tracy L
Quick and easy
Joleen F
Was too easy
Rene M
Curtis D
Easy and fast.
Johnny R
very smooth sailing, thanks
LRD
Thank you
Scott D. D
Was easy to navigate your site
Wilhelm y
I have been looking for this pump for 3 months no one else had it. You do. I am a new happy customer.
John
thank you
Michael G
so far so good, thx
william grunert
Fast and easy, looking forward to installing them. Big Mopar head, huge Dakota fan, driver.
Brandon
easy
jeff kessler
Really handy being able to pay through Amazon.
Frederick T. Hormes
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