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Sierra 18-3108 Marine Water Pump Impeller Key for Johnson/Evinrude Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3108
12 reviews
Sale Price

$12.79

2 left at this price

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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 International 18-3108 Marine Impeller Key is a precision replacement water pump component designed for use with Johnson and Evinrude outboard motors. This small but critical part secures the impeller to the driveshaft, ensuring proper engagement and efficient water pump operation to keep your outboard's cooling system functioning correctly.

Key Features:

  • Durable construction — built from corrosion-resistant materials to withstand demanding marine environments
  • Non-corrosive — engineered to resist the effects of saltwater and freshwater exposure
  • OEM-equivalent fit — meets or exceeds original equipment specifications for reliable, long-lasting performance
  • Direct replacement for Johnson/Evinrude OMC outboard water pump assemblies

Cross-Reference / Replaces:

  • Johnson/Evinrude (OMC): 308928 / 0308928
  • GLM: 89595
  • Mallory Marine: 9-43703

The Sierra 18-3108 impeller key is a common component in Johnson/Evinrude water pump rebuild kits. It is frequently replaced as part of a routine water pump service alongside the impeller, wear plate, and housing gaskets to ensure complete cooling system reliability.

Prices were very fair, had to check back a few times to the listing to determine if item was sold in pairs and/or individually. Overall however the product looks good.

Very easy and smooth, great experience.

thanks

I fount this VW motor mount at 75% off what Auto zone want ...what a deal I'm coming back for sure

very good so far

It was very easy,.....Thank You

simple quick and easy

great gui, accepts paypal

Had what was looking for at good price. First purchase from autoplicity so somewhat unsure about company but will soon find out if reputable or no?

awesome

Smooth and easy

great prices

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