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Sierra 18-4578 Impeller Housing Plate for Johnson/Evinrude Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

18-4578
6 reviews
Sale Price

$10.32

1 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 18-4578 Impeller Housing Plate is a precision-engineered replacement water pump component designed for Johnson and Evinrude outboard motors. This plate serves as a critical sealing and structural surface within the water pump impeller housing assembly, helping maintain proper coolant flow to protect the engine from overheating.

Sierra International's replacement parts are manufactured to meet or exceed original equipment specifications, ensuring a reliable fit and long service life. This plate is a direct replacement for Johnson/Evinrude OEM part number 324640 and is commonly used during water pump rebuild and service procedures.

Key Features:

  • Direct replacement for Johnson/Evinrude OEM part number 324640
  • Manufactured to meet or exceed OEM specifications
  • Critical component in outboard water pump impeller housing assemblies
  • Designed for precise fit and reliable performance
  • Backed by Sierra International's quality assurance

This impeller housing plate is a standard service item recommended for replacement during water pump rebuilds to ensure optimal cooling system performance on compatible Johnson and Evinrude outboard engines.

Thought the site was easy to navigate! It was a stress free experience!!

no place to enter coupon code.

Great Prices with an excellent rating!

Found exactly what I was looking for and for a good price. The checkout is nice and simple and easy to use. However, when I sent them an email before my order shipped saying that I need to have one item removed from the order, I never got an answer and my

Ordering was easy

Great price and in stock, if shipping goes well, then stellar my review stays 5 stars.

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