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June 8, 2025 at 6:59 am
#297158
The Johnson CD-12 is a 1955 5.5 hp. Parts are widely available.
1955-Johnson-CD-12-Parts-Manual
Impeller and ignition components can be found at large online retailers. For pistons, our website has a classified section where you can place a free ad. Good used ones are fine as long as the connecting rod caps have been kept with the original piston and in the same orientation.
Another good source, and good for reference is marineengine.com. They provide updated part numbers. Some parts such as the coils have updated numbers.
Improvise-Adapt-Overcome