Your Cart

Sierra 18-3621 Marine Engine Thermostat Kit 160°F

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

118-3621
8 reviews
04/21/2036 3:43 PM
Sale Price

$22.36

2 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 18-3621 Thermostat Kit is a complete cooling system service kit designed for marine engines, featuring a 160°F temperature rating for optimal engine performance and protection. This comprehensive kit provides all the necessary components for a professional thermostat replacement.

Kit Includes:

  • One 18-3558 thermostat with 160°F opening temperature
  • One 18-0164 thermostat housing gasket
  • One Mercruiser Stern Drive 25-805063 O-ring

Sierra marine parts are engineered to meet or exceed original equipment specifications, ensuring reliable performance and proper fit. This complete kit eliminates the need to purchase components separately and ensures compatibility between all included parts for a leak-free installation.

It was a good experience

Great overall experience.

Great Reviews and Pricing

i thought they were a bit on the pricey side but they are recommended. once i use them i will see how good they are.

Fast shipping

Good

Easy and convenient

Great deal, easy transaction

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