Pistons/connecting rods

[thunderbolt500]

hi all, just wondering what is the year range that these pistons/connecting rods will fit.

MERCURY 50HP PISTON 743--3192, CONNECTING ROD 619-3194

this is what i have on my 72 merc 500 50hp thunderbolt

will this fit a 1975 merc 500 50hp thunderbolt motor.

thank you all

 

[achris]

Re: Pistons/connecting rods

The piston for both engines supersedes to the same number (780-9229A7). One can them assume they both will fit in the same hole...
The connecting rods for both engines use the same number, which also supersedes, to 632-7621A3...

Chris......

 

[Faztbullet]

Re: Pistons/connecting rods

just wondering what is the year range that these pistons/connecting rods will fit.

MERCURY 50HP PISTON 743--3192

These rods have bolts and lock nuts and fit 1968-1982 50hp engines. Then they went to a "crack cap" rod and it just uses a bolt thus the superseded number. Same on the piston as it was a 3 ringer and now a 2 ringer.