Aftermarket Johnson / Evinrude Outboard Thermostat
The Sierra 18-3673 Thermostat Kit is designed to regulate engine operating temperature by controlling cooling-water flow in Johnson / Evinrude applications.
Use With: 18-3543 Thermostat
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
What is Sierra 18-3673?
Sierra 18-3673 is an aftermarket thermostat kit for Johnson / Evinrude Outboard applications.
Which part numbers cross-reference Sierra 18-3673?
This listing cross-references GLM 13270. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-3673 fits my Johnson / Evinrude Outboard application?
Contact us with your engine model and serial number and we'll help check suitability.