MerCruiser 4cyl 3.0L 140hp Piston Connecting Rod 773-810852 613-3187T 1972-1989 Starters & Alternators Basically this would have been

Basically this would have been found on TR / TRS Sterndrive Gimbal Housing Transom Assemblies 1977-1993 (Removed From Serial number A513630)

Actual Serial numbers are outlined below

There was some sand in the container I found them in

Mid Section Exhaust Housing : 1556-4030

Generally nested inside of the 33863 Pulley to make that a 3-grove pulley

MerCruiser 4cyl 3.0L 140hp Piston Connecting Rod 773-810852 613-3187T 1972-1989 Starters & Alternators Basically this would have beenItem Condition and Notes: Good Condition Slight Scoring on Pistons (Cant feel it) Standard Size Pistons Generally Found 1972 1989 as they changed the crankshaft journal in 1997 and then in the early 90's they switched to flat top pistons. Fresh Water Part Please Inspect Pictures to get the best idea of condition. May also work with OMC Cobra Volvo Penta Chevy GM From that time period Part #'s Piston And Piston Pin Assembly: 733 3819 3937758 (Stamped)