The Sierra 18-3642 Thermostat Kit replaces Mercury 825212001, Mercury 825212A1, Mercury 855676A1 for Mercury Outboard applications. It renews the thermostat and associated sealing components used to regulate engine operating temperature.
Thermostat Kit 825212A1 is a 120 F degree thermostat kit for 30 hp and 40 hp 3 cylinder 4-stroke outboards.
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
What is Sierra 18-3642?
Sierra 18-3642 is an aftermarket thermostat kit for Mercury Outboard applications.
Which part numbers cross-reference Sierra 18-3642?
This listing cross-references Mercury 825212001, Mercury 825212A1 and Mercury 855676A1. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-3642 fits my Mercury Outboard application?
Contact us with your engine model and serial number and we'll help check suitability.
Australian Dollars
