My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-3219 Water Tube & Cover Assembly for MerCruiser Stern Drive

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3219
14 reviews
Sale Price

$30.59

In Stock (8)

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 18-3219 is a high-quality water tube and cover assembly designed specifically for MerCruiser Merc I and Alpha I stern drives. This critical cooling system component ensures proper water flow through your engine's cooling passages, helping to maintain optimal operating temperatures and prevent overheating.

Key Features:

  • Designed to meet or exceed OEM specifications for reliable performance
  • Direct replacement for MerCruiser part numbers 42724A3, 54235A2, 32489A2, and 32489
  • Compatible with Merc I, 1A, 1B, 1C, 1CEZ, R, MR, and Alpha stern drive models
  • Also fits models 120, 140, 160, 165, 888, 898, 228, 225-S, 233, 250, 260, 470, and 485
  • Includes both water tube and cover assembly for complete installation
  • Interchangeable with GLM 12200 and Mallory 9-78139

Note: Installation requires bolt 18-3229 (sold separately). This precision-manufactured component provides long-lasting durability and dependable service in demanding marine environments.

Love the price

Nice website

good

easy shopping, I have my truck in the shop and waiting for the part

Easy to find parts

very good

Good Price, easy online browsing.

So far, so good.

Easy and fast so far

Easy payment methods

Great prices & fast shipping.

Best prices online, shipped was one day sooner than anticipated.

Quick turn around on my order. Best price around and reasonable shipping and handling. Done deal.

Very quick service and lowest price.

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