My Account
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order

Sierra 18-3643 Thermostat for Johnson Evinrude Outboard Motors

Manufacturer

Picture for manufacturer Sierra

Part Number

118-3643
5 reviews
Sale Price

$25.80

3 left at this price

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 18-3643 Thermostat is a high-quality aftermarket replacement thermostat designed specifically for Johnson/Evinrude outboard motors. This critical cooling system component regulates engine temperature by controlling coolant flow, holding cooling water in the engine block until it reaches the optimal operating temperature specified by the manufacturer.

Key Features:

  • Constructed from non-corrosive aluminum material for durability in harsh marine environments
  • Engineered to meet OEM specifications for reliable performance
  • Direct replacement for Johnson/Evinrude OEM part number 433379
  • Fits multiple Johnson/Evinrude outboard applications including 6-8HP, 9.9-15HP, 40-50HP, and 45-55HP models
  • Backed by Sierra's comprehensive quality warranty

Sierra Marine is the market leader in aftermarket marine engine parts, offering products that cover every major engine brand with an unsurpassed customer satisfaction warranty. This thermostat is designed to provide dependable cooling system performance for years of trouble-free operation on the water.

Replaces OEM: Johnson/Evinrude 433379

Thanks guys, I get the parts a look and was easy to navigate on your website nice day

Fast and good price

Great prices

Fast service and top of the line products. Easy to order online and they follow up to make sure you are pleased with the product you had ordered.

Easy

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