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Sierra 18-99151 Upper Casing Gasket for Yamaha Outboard 688-45113-A0

Manufacturer

Picture for manufacturer Sierra

Part Number

18-99151
10 reviews
Sale Price

$13.48

3 left at this price

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-99151 is a replacement upper casing gasket engineered to provide a precise, leak-free seal for select Yamaha 2-stroke outboard engines. This gasket seats between the cylinder head and engine block, maintaining proper compression and preventing fluid or exhaust leaks during operation. It is a direct aftermarket replacement for Yamaha OEM part number 688-45113-A0-00 (also cross-referenced as 688-45113-00-00).

Key Features:

  • Direct replacement for Yamaha OEM gasket 688-45113-A0 / 688-45113-00
  • Designed to withstand high temperatures and pressure conditions found in marine outboard engines
  • Provides a reliable seal between the cylinder head and engine block
  • Manufactured to OEM specifications for proper fitment and sealing performance
  • Sierra Marine part number: 18-99151

This upper casing gasket is compatible with Yamaha 2-stroke outboard engines in the 75HP, 80HP, 85HP, and 90HP range across a wide span of model years. Always verify the OEM part number against your engine's parts diagram before ordering to ensure correct fitment.

There prices are the best I have seen for what I bought.

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easy to use website, order delivered promptly Requested to add something to order prior to shipment which they were unable to do.

great so far.

Fast shipping even around the holidays and the cheapest price I could find on my Thule t2 bike rack I would buy here again

Autoplicity cares about there customers. I ordered a flash programmer and got to the last page and never got a confirmation of the order. I used the website chat and talked to somebody about it right away. So I ordered again and got a conformation. But both went though. Autoplicity called me next day a.m. to see if I made a mistake. Thanks for letting me know and correcting to one order. Saved me from shipping back a product I dind't need.

great prices

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