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Sierra 18-3063 Water Pump Impeller for Mercury/Mariner & Yamaha Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3063
13 reviews
Sale Price

$25.78

In Stock (10)

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Usually delivered within 2 days

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No Hassle Returns

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Live-in-stock inventory

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3063 is a direct-replacement water pump impeller designed for Mercury/Mariner and Yamaha outboard engines. Sierra replacement impellers are manufactured to meet or exceed OEM specifications, ensuring reliable cooling system performance and engine protection on the water.

This impeller features 6 rubber vanes and the following dimensions: overall diameter of 40.0 mm (1.57 in.), blade height of 22.0 mm (0.87 in.), and a hub shaft diameter of 14.0 mm (0.55 in.). The flexible rubber construction provides effective water flow through the raw water cooling circuit, helping maintain proper engine operating temperatures in both freshwater and saltwater environments.

Key Features:

  • Meets or exceeds original equipment (OEM) performance standards
  • 6-vane rubber impeller for optimal water flow and cooling efficiency
  • Overall diameter: 40.0 mm (1.57 in.) — Blade height: 22.0 mm (0.87 in.)
  • Hub shaft diameter: 14.0 mm (0.55 in.)
  • Suitable for freshwater and saltwater applications
  • One impeller included per package

OEM Cross-Reference Part Numbers:

  • Mercury/Mariner: 47-95611M, 47-81242M
  • Yamaha: 662-44352-01-00, 662-44352-00-00
  • Mallory: 9-45608
  • CEF: 500321

Regular impeller replacement is a key part of outboard engine maintenance. Sierra's 18-3063 makes it easy to restore proper water pump function and protect your engine from overheating.

Very easy and intuitive!

Need them fast

I had a hard time locating all the correct oxygen sensors for my vehicle (requires 4).

Item arrived quickly and as described. Thanks

Good and fast.

great prices

EXCELLENT PRICES I've shopped around and Autopicity can't be beat period. Awesome Company, Very FAST Shipping. I would definitely recommend doing business with them.

My experience with autoplicity was great. Great selection and service. Fast shipping. Will definitely use them again.

I'm a first time customer. So far so good. If I should get these two chairs this week i'll be ecstatic!!!!!

Easy ordering

Thanks

So far so good.

Good I hope to do more business

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