1979 Johnson lower unit compatibility

[zino]

I need to replace the lower unit on a 1979 Johnson 70 hp outboard. What years and hp OMC motor lower units are compatible. Any info would be much appreciated.

 

[durban]

Re: 1979 Johnson lower unit compatibility

1980 -1981 60hp 70hp 75hp motors that have these last 3 letters in model no CSR , CSA ,CIC ,CIH CIM CIA , cheers