Why shop with us
Brand: Sierra Marine
Marine Thermostat Kit Sierra International 18-3667 for Mercruiser Stern Drive , white
Marine Thermostat Kit for Mercruiser Stern Drive by Sierra International.
Currently out of stock
No hidden fees — taxes included in the price & Free Shipping.
We accept major cards and digital wallets. Additional installment plans, when available, are offered by Shopify at checkout based on order eligibility.
Marine Thermostat Kit Sierra International 18-3667 for Mercruiser Stern Drive , white
Sierra products are designed to meet the high horsepower demands of today’s engines and withstand the harsh marine environment.
All Sierra products meet or exceed the part they replace from original equipment.
Many OEM engine manufacturers and boat builders receive hundreds of quality parts from Sierra every day.
Key Features
Specifications
- Length
- 6.6 lb
- Width
- 5.5 lb
- Height
- 2.25 lb
- Weight
- 0.16 lb
- ASIN
- B00027GVIQ
- UPC
- 030999316301
- Ships From
- United States
- Brand
- Sierra Marine
Frequently Asked Questions
About Marine Thermostat Kit Sierra International 18-3667 for Mercruiser Stern Drive , white
01 What is the part number for the Sierra Thermostat Kit?
The part number is 18-3667.
02 What is the temperature rating of the thermostat?
The temperature rating is 160°.
03 Which model is interchangeable with the Sierra Thermostat Kit?
It is interchangeable with GLM 13420.
04 What is the ASIN for this product?
The ASIN for this product is B00027GVIQ.
05 What is the UPC / barcode for this product?
The UPC/barcode for this product is 030999316301.
06 Where does this ship from?
Orders ship from our fulfillment center in Dover, Delaware, USA.
07 How many days will it take to arrive?
Orders ship within 1-2 business days and typically arrive within 4-5 business days via free standard shipping -- usually by Sep 3.
08 Does this product accept returns?
Yes -- this item can be returned within 15 days of delivery for a free return by mail. See our return policy for full details.

