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Sierra 18-99151 Upper Casing Gasket for Yamaha Outboard

Manufacturer

Picture for manufacturer Sierra

Part Number

118-99151
6 reviews
Sale Price

$8.84

4 left at this price

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-99151 is a precision-engineered upper casing gasket designed as a direct replacement for Yamaha outboard engines. This critical sealing component ensures proper compression and prevents leaks between the cylinder head and engine block.

Key Features:

  • Direct replacement for Yamaha OEM part number 688-45113-A0-00
  • Fits Yamaha 75, 80, 85, and 90 HP three-cylinder outboard motors
  • Compatible with model years 1984-2020
  • Manufactured to OEM specifications for reliable sealing performance
  • Durable gasket material designed to withstand high temperatures and pressure

Sierra marine gaskets meet or exceed original equipment standards, providing dependable performance for recreational and commercial marine applications. This upper casing gasket is essential for maintaining proper engine operation during powerhead service or rebuilds.

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FedEx shipping was iffy but that's not your fault. Assembly instructions or at least an exploded diagram of all the piece parts of the cover kit would have been helpful.

Had what I want at a very good price.

Easy process. Delivered on projected date.

Awesome anf easy

I'm still installing the steering system. But the shipping was fast. Received exactly what I ordered. Good company to do business with

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