The Sierra 18-3667 Thermostat Kit is designed to regulate engine operating temperature by controlling cooling-water flow in Mercruiser applications. It replaces Mercruiser 99155T2.
Temperature Rating: 160°F
Kit Contains:
18-2555Â Gasket, Thermostat Housing
18-3555Â Thermostat
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
What is Sierra 18-3667?
Sierra 18-3667 is an aftermarket thermostat kit for Mercruiser applications.
Which part numbers cross-reference Sierra 18-3667?
This listing cross-references Mercruiser 99155T2 and GLM 13420. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-3667 fits my Mercruiser application?
Contact us with your engine model and serial number and we'll help check suitability.
Australian Dollars
