Mercruiser parts bearing application chart / upper gearcase

Mercruiser Parts Warehouse & Stern Drive Drawings

Mercruiser parts bearing application chart / upper gearcase

Mercruiser parts bearing application chart 1972 thru 1982 for upper gearcase outdrives

Drive gear bearings
Driven gear bearings
Tapered bearings upper gearcase photo and information page
Roller bearings and ball bearings for the lower gearcase are also available
Seal kit (upper)
Serial numbers with gear ratio and year
Please see MerCruiser upper gearcase drawing for more bearings and components

Model

Gear Ratio

Years

Serial Numbers

Seal Kit (upper)

Drive Gear Bearing

Driven Gear Bearing

Upper cover top bearing

120-140

1.98

1967

2062141-2187468

87500

21520

21540

21540

120-140

1.98

1967-71

2187469-3134193

87500

21520

21540

21511

120-140

1.98

1971-82

3213658-6225576

87500

21520

21540

21510

470-485

1.84

1976-82

4208730-6225575

87500

21520

21540

21540

160

1.68

1967

2065190-2182197

87500

21520

21540

21511

160

1.68

1967-71

2182198-3134193

87500

21520

21540

21510

165

1.65

1971-81

3213658 thru

87500

21520

21540

21510

888

1.50

1974 thru

3784375 thru

87500

21520

21540

21510

225-S

1.50

1974

3856268-4200499

87500

21520

21540

21510

233

1.32

1975-77

4200500 thru

87500

-

21550

21510

898-228

1.65

1977-82

4782330-6225576

87500

21520

21540

21510

250

1.32

1977

4791300-4898729

87500

-

21550

21510

260

1.50

1978-82

4898730-6225576

87500

21520

21540

21510

R/MR/Alpha One

1.98/1.84/1.65/1.50

1984-1990

6225577 & up

87500

21520

21540

21510

R/MR/Alpha One

1.50

1984-1990

6225577 & up

87500

21520

21560

21510

R/MR/Alpha One

1.32

1984-1990

6225577 & up