'85 18XD lower unit

RCO

Petty Officer 1st Class
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Jun 15, 2016
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I picked up a really clean 1985 18XD with a bad lower unit. The housing is cracked (froze) and gears are rusted solid, so no chance of repairing this one. I know the 20 and 25 use the same lower, but what years will interchange?
 

RCO

Petty Officer 1st Class
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Jun 15, 2016
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Lower unit bolt are 7/16 or 12mm thread with 1/2" hex head. Look the same size as my 50ELPTO.
 

flyingscott

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Apr 8, 2014
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Pretty much 85 and up will interchange there is a shift rod change later on. Earlier lowers will fit but you need to drill them out for the larger bolts. The later shift rods I believe have a bend in them where yours is straight you may need to swap them out.
 
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