Mercruiser Upper Gearcase R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Camshaft 5L 120hp or some 4

5L 120hp or some 4

but is not a direct replacement as the 4 center bolts are at the wrong angle

The Part Number of Grommet 304019

Mastercraft MC81-531052

I'm sure there is a replacement in the included kit if you want to replace this

Mercruiser Upper Gearcase R/MR/Alpha One 1.98 Gearset 43-55778A3 120hp 140hp Camshaft 5L 120hp or some 4Item Details All 120hp 2. 5L & 140hp 3. 0L 4cyl applications for Pre Alpha R MR ALPHA ONE Gen I, so 1970 1990 as a general rule. The gear set here is 43 55766 & 43 55778A3 (Sierra equivalent 18 2205) (Also Equivalent to 43 55766A2 43 55766A3 as indicated in earlier parts manuals) 20 24 (tooth count) 1. 98 Ratio for 4 cylinder GM Chevy 120hp 2. 5L 151CID 140hp 3. 0L 181CID 4 cyl Sterndrive engines. Upper Driveshaft Assembly 45 55797 Races for