MerCruiser 43-55778A3 120hp 140hp Upper Pre/R/MR/Alpha One 1.98 Gearset Gearcase Transom Plate but you can replace it

but you can replace it with a new one from ford

Please Inspect Pictures to get the best idea of condition

KD3S ---- WD3S

This should technically replace the later kind with the Ventilated-gear tooth looking exterior as well

This was off an 1992 or 1993 Force by Mercury 40hp (Serial Number 0E014450)

MerCruiser 43-55778A3 120hp 140hp Upper Pre/R/MR/Alpha One 1.98 Gearset Gearcase Transom Plate but you can replace itItem Details All 120hp 2. 5L & 140hp 3. 0L 4cyl applications for Pre Alpha R MR ALPHA ONE Gen 1, so 1970 1990 as a general rule. (You may need to replace the bearing on top of the shaft depending on whether you have a 1970 1982 vs 1982 & Up application as they each used different bearing sizes) (Actually these were also used on Gen II drives 1991 1997) The gear set here is MerCruiser 43 55766 43 55778 > 43 55778A3 (Also Equivalent to 43 55766A2 43