My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-3091 Water Pump Impeller for Johnson/Evinrude Outboard Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3091
11 reviews
Sale Price

$15.50

2 left at this price

delivery box

Usually delivered within 2 days

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3091 is a replacement water pump impeller designed for Johnson and Evinrude outboard engines. This impeller works in conjunction with the 18-4529 water pump kit to maintain proper water flow through your engine's cooling system, preventing overheating and ensuring reliable performance on the water.

Key Features:

  • Direct replacement for OMC part number 389576
  • Single impeller design for specific Johnson/Evinrude models
  • Engineered to meet or exceed OEM specifications
  • Compatible with Sierra 18-4529 water pump kit
  • Durable construction for extended service life

Regular impeller replacement is critical for maintaining your outboard's cooling system. A worn or damaged impeller can lead to reduced water flow, overheating, and potential engine damage. Sierra Marine parts are trusted by marine professionals and boaters worldwide for quality and reliability.

Great site with great prices! Ordered an O2 bung from these guys and it came earlier than expected. The bung looks of decent quality and definitely can't wait to get my wideband in to start tuning.

Great

Was good

Great Prices!! Hopefully will ship quickly

Good so far

Easy...found in stock item quickly and checkout was a breeze!

Quick and easy

Really good knowing the parts are exact to my jeep

Easy to buy. Best price

It was good.

Easy so far first time buyer

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy