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$20.14
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The Sierra 18-3555 is a 160-degree marine thermostat designed to fit 1998 and newer GM V-6 and V-8 engines with closed cooling systems. This precision-engineered thermostat ensures optimal engine temperature regulation for Mercruiser stern drive applications, helping to prevent overheating and maintain consistent operating temperatures in the harsh marine environment.
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OEM Cross Reference Numbers:
Sierra Marine has been a trusted name in marine replacement parts for over 50 years, providing reliable components that meet or exceed OEM specifications. This thermostat is an essential maintenance item for keeping your Mercruiser engine running at the proper temperature for optimal performance and longevity.
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Andre Lee
easy
val
great site
morgan huber
Good so far
Miguel Latigo
Very easy and fast
LE V TRAN
Very happy with my purchase. SUPER fast shipping and great communication. Will use again!
ScubaSteveGTR
smooth
Kevin Eaton
Easy and safe
jimkucharz
Order #30897. Ordered on Monday, received on Thursday. Exactly what I needed. Can't ask for anything more. Definitely will look at Autoplicity again when I need more parts!
FastDragRacer
Quick and easy.
Skeeter
Received the order in 3 business day. Price was the best. Tried the VIAIR 400p that I order and found it to me my expetations.
aldes
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Thomas Comptois
Seller was quick and hasle free to deal with. Will purchase again from this seller.
Dc5jet
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