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Sierra 18-3199 Starboard Water Pickup for MerCruiser MR/Alpha I Stern Drive

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3199
13 reviews
Sale Price

$5.00

3 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 18-3199 is a starboard-side water pickup designed as a direct replacement for MerCruiser MR and Alpha I stern drives. Built to meet or exceed original equipment specifications, this Sierra marine part ensures reliable raw water flow to the engine cooling system — a critical component for preventing overheating in sterndrive applications.

Key Features:

  • Starboard (right-side) water pickup for MerCruiser stern drives
  • Meets or exceeds OEM specifications for fit, form, and function
  • Compatible with MerCruiser R, MR, and Alpha One stern drives (1983–1991)
  • Serial number range: Sterndrive s/n 6225577 thru 0D469858; Transom Assembly s/n 6216687 thru 0D469858
  • Sold individually — one starboard water pickup per package

OEM Cross-References:

  • Mercruiser OEM: 93423, 934231, 934233
  • Mallory: 9-78115
  • GLM: 21870

Sierra has been a trusted name in marine replacement parts for decades, engineering components that match the quality and durability of original manufacturer parts. The 18-3199 is an economical, reliable solution for maintaining proper cooling system performance on your MerCruiser-powered vessel.

easy site to navigate

Very quick ordering, however I was unable to use the PayPal function.

so quick & easy thank you

Easy to navigate, found what I was looking for. Will definitely be back for more.

Great site! Order arrived quickly and in great condition!

When I get my product I will comment

its ok

Great experience! !!!

Awesome price! Shipping could be faster, but it was fast enough. Will deff buy again.

thanks it was simple

Pleasant

Had difficult to find parts.

Excellent and very quick service. I could not find this product in stock from any other supplier so I kept hunting. I found Autoplicity and from now on they are the first company I will try. Thank you.

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