Sierra 18-3643 Johnson Evinrude Thermostat Kit
- Brand:
- Sierra
- Part no:
- 18-3643
Image: Powerboat Supply
Where to buy
View on Amazonpaid link
This is the Sierra 18-3643 thermostat kit, also listed as Sierra 3643. It is named for Johnson and Evinrude engines. The information available for it is brief. Sierra directs readers to its own catalog for the complete list of applications, so that is the place to confirm which engine it belongs on.
Our take
The Johnson Evinrude naming on this Sierra 3643 kit points to the engine families it targets, but the full application list sits in Sierra's catalog. Check your engine against that list before fitting it.