The Sierra 18-5775 Switch is designed for the applicable marine electrical circuit. It replaces Mercury 7778A12.
Fits: 3 & 6 cylinder outboards with ADI ignition systems
Need help with fitment? Contact us with your engine model and serial number and we'll help check suitability.
What is Sierra 18-5775?
Sierra 18-5775 is an aftermarket switch for Mercury Outboard applications.
Which part numbers cross-reference Sierra 18-5775?
This listing cross-references Mercury 7778A12, Chrysler / Force 332-7778A12, Chrysler/Force/US Marine 332-7778A12 and Mallory 9-25100. See the Cross References & Alternative Products section above for linked alternatives where available.
How can I check whether Sierra 18-5775 fits my Mercury Outboard application?
Contact us with your engine model and serial number and we'll help check suitability.
Australian Dollars
