GM 3859167 Piston Connecting Rod Set MerCruiser 733-227 2.5L 120hp 4cyl 1964-72 Windshield Parts 7L 170hp 165hp

7L 170hp 165hp

(which were typically stamped 816459 / 816459C)

0L 302 Models used a different Oil Tube & 1991 & Up used different exhaust manifolds)

Sterndrive Alpha One I/O

Bearing 303380

GM 3859167 Piston Connecting Rod Set MerCruiser 733-227 2.5L 120hp 4cyl 1964-72 Windshield Parts 7L 170hp 165hpPart Numbers (GM MerCruiser OMC Stringer OMC Cobra) Piston (Standard Size, but undersized for anything after 1972)) GM 3859167 (stamped) MerCruiser 736 2278 OMC (GM 3860407) Connecting Rod GM ??? (Likely GM 3788435) MerCruiser 613 2277 OMC (GM 3788435) General Application Compatibility Above all else, it's always a good idea to match the number stamped on your existing pistons! MerCruiser & OMC GM 2. 5L 4cyl 120hp 153CID applications roughly 1964 1972