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Sierra 18-4359 Overhaul Gasket Set for Mercury/Mariner Outboard Motors

Manufacturer

Picture for manufacturer Sierra

Part Number

18-4359
13 reviews
Sale Price

$150.52

In Stock (7)

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Usually delivered within 2 days

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Fitment guaranteed

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Product Details

The Sierra 18-4359 Overhaul Gasket Set is a premium aftermarket replacement gasket kit designed for Mercury and Mariner outboard motors. This comprehensive set delivers precise sealing performance across critical engine mating surfaces, making it an ideal solution for engine rebuilds and overhauls.

Sierra engineers this gasket set using high-grade materials that meet or exceed original equipment specifications, ensuring reliable, long-lasting sealing performance in the demanding marine environment. It is a direct replacement for Mercury Marine OEM part numbers 27-815791A92, 27-815810A90, 27-815791A90, and 27-815809A90, and is also interchangeable with GLM 39520 and Mallory 9-64204.

Key Features:

  • Direct OEM replacement — meets or exceeds Mercury Marine specifications
  • Constructed with high-grade materials for durability in the marine environment
  • Interchangeable with GLM 39520 and Mallory 9-64204
  • Replaces Mercury Marine part numbers: 27-815791A92, 27-815810A90, 27-815791A90, 27-815809A90
  • Backed by Sierra's industry-leading warranty
  • Note: Does not include head gaskets

Sierra is a trusted name in marine aftermarket parts, offering premium-quality replacements across thousands of marine components. The 18-4359 is an essential kit for technicians and DIY boaters performing a full powerhead overhaul on compatible Mercury and Mariner outboard engines.

Out of all the websites I've used to find my item, this was the lowest cost, and I'm so happy that I found them! Keep up the great work guys!

Vera good options

Best price on the Web for Tein Street Flex suspension. Period.

Awesome!

Great prices, super fast shipping!

Not one issue at all

Can't see if it's in stock...

Great experience! VERY low price that beat everyone else!

fast and easy

I will hold final comment until I receive the order.

Great prices. Easy order placement through Amazon. Let's see how fulfillment goes.

Fast, Hassle free and easy

I placed an order and 2 days later it was at my door!!! Very fast shipping and easy to navigate website! I would definitely recommend this site to all my friends. Keep up the great job!

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