My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-3551 Marine Thermostat 142 Degree

Manufacturer

Picture for manufacturer Sierra

Part Number

118-3551
5 reviews
Sale Price

$13.14

In Stock (7)

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 18-3551 is a 142-degree marine thermostat engineered for raw water-cooled inboard engines. This precision replacement thermostat maintains optimal engine operating temperature to ensure reliable performance and prevent overheating or inefficient warm-up cycles.

Key Features:

  • Temperature rating: 142°F (61°C)
  • Dimensions: 2.125 inches outer diameter x 1.5 inches height
  • Designed for Ford 302/351 CID engines
  • Compatible with all V-8 Chrysler engines with Rochester carburetors (1986-present)
  • Engineered to meet or exceed OEM specifications
  • Features jiggle valve for air pocket release during installation

Replaces OEM Part Numbers: Mercury/MerCruiser 32728, 35884, 59137, 59137A1, 67464, 8072521, 807252T1, 8M0089715; Chrysler Inboard 4142885; Crusader 96319; Pleasurecraft R026002E; GLM 13030; Mallory 9-43013

Sierra Marine has manufactured high-quality marine engine parts for over 50 years, earning the confidence of boat builders and marine technicians worldwide. Each Sierra thermostat is built with the same quality materials as OEM parts to provide accurate fit and dependable function. Gasket not included.

Great experience

Everything was great and smooth. No issues. Great job. Everything was easygoing and quick shipping.

y

Great pricing

Easy to order

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