Hello. I have a 1986 Johnson outboard, 20 HP, 20 inch shaft. It needs the lower unit replaced. I think I can use 20/25/30/35 HP lower units, but I’m not sure what years are compatible with my ‘86. Anybody know?
Look up my model# on www.marineengine.com and then check out the same model year of different HP motors to see if the OEM part# AND configuration (gear ratio or part #s) is/are the same.