Thermostat 140 Degrees - 18-3550 - Sierra
Price: $16.41
Save: $3.58
(17% Off $19.99)
Part # 18-3550
2nd Day Air for $2.99 More Eligible
This item is found in the following Product Families
Replaces OEM part #
Average Customer Review for Thermostat 140 Degrees - 18-3550 - Sierra
Full StarFull StarFull StarEmpty StarEmpty Star
Based On 3 Reviews | Write Review
Full StarFull StarFull StarFull StarFull Star
The right replacement part
by Ron from Brookfield, Wisconsin on May 19, 2017
Good price and on time.
Was this review helpful?
Full StarEmpty StarEmpty StarEmpty StarEmpty Star
Wrong thermostat
by Thomas from Lakeville, Minnesota on December 10, 2016
I ordered this thermostat per your look up table for a 2004 Mercruiser 3.0 Litre engine. (the boat went into winter storage about the time I received it). I since researched the part on the Mercruiser web site and it calls for a 160 deg. thermostat, their p/n 807252T2, sierra p/n 18-3649. I will probable need a new gaskit for it also. When I get more time I will get more info and get back to you!
Was this review helpful?
Full StarFull StarFull StarFull StarEmpty Star
Quick shipping
by Jeremiah from Arkansas City, Kansas on August 03, 2014
Quality part and good price.
Was this review helpful?
This product ships in 1 business day.
Add to Cart and enter your Postal Code to determine the shipping charges.
Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer: