Sierra
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
SHIPS TODAY!* if ordered in 8 hrs 5 mins.
This item is found in the following Product Families
Replaces OEM part #
  • MERCURY MARINE 59078
Average Customer Review for Thermostat 140 Degrees - 18-3550 - Sierra
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The right replacement part
by Ron from Brookfield, Wisconsin on May 19, 2017
Good price and on time.
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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!
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Quick shipping
by Jeremiah from Arkansas City, Kansas on August 03, 2014
Quality part and good price.
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