3M 83681 Stikit 260L P1200 Grit 5" Sanding Finishing Disc 100 Piece U-bolts 600 (60hp) 1960 models (I

600 (60hp) 1960 models (I would imagine all of 1960

MerCruiser 58397A3 Mounting Bracket Assembly (ALUMINUM CONSTRUCTION) This particular bracket to has only 4 holes on it and only fits the early style (1970-1982) MerCruiser / Mercury Outboard pumps (Prestolite with big metal or plastic boxy reservoir)

Includes Nuts 3852648 / 3853329 & Washers 3852573

GM 120 181 I/L4 1968-1972 140 GM 181 I/L4 1972-1978

For the most part it seems these parts were used from 1976-1982 on pretty much all of the MerCruiser 470 3

3M 83681 Stikit 260L P1200 Grit 5" Sanding Finishing Disc 100 Piece U-bolts 600 (60hp) 1960 models (IItem Details 3M 83681 "Stikit" 260L 5" inch Diameter Sanding Finishing Disks No Hole P 1200 Grit (Super Fine) Aluminum Oxide Box of 100 Other Details New Old Stock (from a now defunct boat manufacturer) This has some shelf wear so the packaging condition will look similar to what is photographed here. Purchase with confidence!