Your Cart

Sierra 18-3609 Marine Thermostat Kit for Yamaha Outboards

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

118-3609
6 reviews
04/21/2036 9:36 PM
Sale Price

$20.88

4 left at this price

delivery box

Usually delivered within 2 days

Add To Cart

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 18-3609 Marine Thermostat Kit is a premium replacement component designed specifically for Yamaha outboard engines. This complete kit includes both the thermostat and cover gasket, providing everything needed for a proper installation.

Key Features:

  • Temperature rating: 122°F (50°C)
  • Engineered to meet or exceed OEM specifications
  • Designed to withstand harsh marine environments
  • Complete kit includes thermostat and gasket
  • Premium quality construction for reliable performance

This thermostat kit regulates engine temperature by controlling coolant flow, ensuring your Yamaha outboard operates at the optimal temperature for peak performance and longevity. Sierra marine parts are built with quality materials that resist corrosion and deliver dependable service in saltwater and freshwater applications.

OEM Cross References: Replaces Yamaha part numbers 6E5-12411-30-00, 61A-12414-A0-00, 6J8-12414-A0-00, and Mallory 9-43038, 9-43178.

Great pricing

Thanks

Thanks for the fast delivery

good price

Good selection and price fast delivery.

Didn't get to use it got too cold, Ready to go ice fishing have to try it in the summer.

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