Interchangable lower unit for 81 merc 140hp

[Tim Wolfe]

I have an 81 merc 140hp need to know what years/HP lower unit/foot will interchange with it. Model No is 140EL, Serial no is 5742623

 

[wired247]

Re: Interchangable lower unit for 81 merc 140hp

Any L6 from 1973 through 1988. You can use 80/85 HP L4 cases too but the ratio is 2.3:1 instead of 2:1 .