Mercruiser Alpha One Drive Shaft Bearing

Alpha One & Gen 2 Outdrive Parts *Drawings *Videos

Mercruiser Alpha One Drive Shaft Bearing

Lower Unit Drive Shaft Bearing

GLM P/N 21610
Replaces OEM 31-42647A1
Make sure to replace this part every time it is removed from the shaft and look for writing this side up on bearing
Exploded view Mercruiser outdrive drawing
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21610 Roller Bearing Drive Shaft 31-42647A1-M

21610 drive shaft bearing

P/N 21610 Bearing OEM 31-42647A1 $43.95

P/N 21610 Replacement lower unit drive shaft pinion bearing.
Compatible with 1983 - up models (serial numbers 6225577 and up).
Replaces OEM 31-42647A1.

Customers who ordered P/N 21610 also purchased:

11120 Drive Shaft Mercruiser 45-42634

P/N 11120 MR / Alpha One drive shaft without nut for the lower gear case. Replaces OEM 45-42634. $154.99

11140 Generation 2-45-816919

11140 Generation 2-45-816919

P/N 11140 Lower housing drive shaft - 1991 and up (Generation 2, serial number 0D469859 and up). Replaces OEM 45-816919, 45-816472, 45-853647, 45-853648. $475.99

87510 Seal Kit 26-33144A2

87510 Seal Kit 26-33144A2

P/N 87510 1970 - 1990 lower unit seal / gasket kit. Replaces OEM 26-33144A2. $42.95

P/N 87511 1991 and up lower unit seal kit. Replaces 26-816575A3. $35.95

317201 Large Sealant-Johnson

317201 Large Sealant-Johnson

P/N 508235 Gasket sealing compound (required for o-rings and gaskets). $24.95