Your Cart

Sierra 18-3648 Marine Thermostat Kit 160° for Mercruiser

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-3648
10 reviews
03/12/2036 8:03 PM
Sale Price

$22.14

In Stock (10+)

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 18-3648 Marine Thermostat Kit is a complete 160-degree thermostat replacement kit designed for Mercruiser stern drive engines. Proper thermostat operation is essential for maintaining optimal engine temperature, ensuring peak performance and maximum fuel efficiency in marine environments.

Kit Includes:

  • Sierra 18-3649 Thermostat (160°F)
  • Sierra 18-2553 Thermostat Cover Gasket
  • Sierra 18-2917 Thermostat Gasket

Key Features:

  • 160-degree Fahrenheit temperature rating for precise engine temperature control
  • Marine-grade construction withstands harsh saltwater and brackish water conditions
  • Complete kit with all necessary gaskets for proper installation
  • Replaces OEM Mallory 9-43100
  • Meets or exceeds original equipment specifications

This thermostat kit is compatible with a wide range of Mercruiser engines including GM V-6 and V-8 configurations, 3.0L, 4.3L, 5.0L, 5.7L, and 350 Mag engines from various model years. Sierra marine parts are engineered to deliver reliable performance and long service life in demanding marine applications.

best price on line !!!!<br>fast shipping, highly recommended !!!!!

Fast and easy!

Had instock, good price

I was able to find the headers I was looking for at a good price and free shipping is a big plus as well.

shopping was awesome and easy , items showed in stk, but delivery was over 9 days

prices are good. After I paid it took them 5 days to ship the order. Communication is not very good with autoplicity.

Good price

Great easy

Best parts at the best price, will continue to order from Autoplicity. Shipping is also very fast.

Cheapest I found. Fast shipping time too. Haven't got to try out my products yet but I would/will refer this website to others

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