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Your cart is empty.Sierra products are engineered to meet today’s high horsepower engine demands and stand up in the harsh marine environment. All Sierra products meet or exceed the original equipment part it replaces. Sierra supplies many OEM engine manufacturers and boat builders hundreds of quality parts every day
Customer
Reviewed in the United States on July 18, 2024
Item was exactly what I needed
P. H. Johannsen
Reviewed in the United States on August 9, 2023
Taking out the OEM thermostat and comparing it to the thermostat that comes with the kit shows a night and day difference in quality, but hey....Sierra makes products I trust more than the other "no-name" brands, and the price is acceptable! Means to an end, and the price we pay to play!Gaskets were perfect!
Peter Lounsbury
Reviewed in Canada on July 6, 2019
Worked perfectly holds the boat at 140 degrees.
OnyxTheVanIG
Reviewed in the United States on May 5, 2017
Fit perfect. Didn't need 2 of the gaskets but good price for total package
Todd
Reviewed in the United States on April 16, 2017
Great kit
Robert S.
Reviewed in the United States on August 26, 2016
Good stuff
RP
Reviewed in the United States on July 30, 2016
Works like a charm
Steven Kempkers
Reviewed in the United States on December 10, 2016
I got it , But lost time to use it before I had to Boat up for the Winter.
Mr. Chips
Reviewed in the United States on January 14, 2012
Needed thermostat kit for my 1989 Mercruiser 454 7.4L engine for my SeaRay.So far it seems to be a good quality kit!
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