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Sierra 18-3420 Water Pump Base for MerCruiser Alpha One

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3420
10 reviews
Sale Price

$28.66

In Stock (10)

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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 18-3420 Water Pump Base is a high-quality replacement part designed to meet OEM specifications for MR & Alpha One drives (1985-1990). This essential component of the lower unit cooling system ensures proper water circulation to prevent engine overheating.

Key Features:

  • Direct replacement for Mercury/MerCruiser original equipment
  • Designed for gear cases without pre-load pin on drive shaft
  • Includes retainer configuration for tapered roller bearing support
  • Meets or exceeds OEM performance standards

OEM Cross-References:

  • Mercury/MerCruiser: 46-44292T1, 46-44292Q03, 46-44292A3
  • GLM: 12320
  • Mallory: 9-43308

This water pump base is a critical replacement part for maintaining optimal cooling performance in MerCruiser sterndrive systems. Always verify part numbers to ensure proper fitment for your specific drive application.

Nice easy part searches; fast and accurate results.

Very easy and quick

Would like an est arrival date

So far so good

Great so far

Great pricing and fast checkout with amazon pay! Thanks!

Great Product, you canot find a better price!!!<br><br>K&N Air Intake for 2010 Camaro 6.2

good

I ordered some springs for my Fox Piggyback shocks on 2-6-12. Autoplicity was the cheapist place I could find. I received the springs today 2-16-12 from Eibach. The springs were excatley what I ordered. Thanks Autoplicity!

Same product as others with better price. Simple and easy to buy products on website and good shipping.

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