Alpha 1 & Gen. 2 Outdrive Parts *Drawings *Videos

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Mercruiser Alpha One bearings, seals & shims

GLM Marine aftermarket P/N 25120 contains lower gearcase stern drive gaskets, seals, bearings and shims

Mercruiser Alpha One parts included in kit P/N 25120
OEM 31-803068T1 contains the following items

  • 25120 Mercruiser gearcase seal and kit use with Alpha One 1984 to 1990 serial # 6225577 includes
  • 87510 Seal kit and water pump gaskets
  • 23210 Shim kit drive shaft
  • 21590 Roller cone M804049N race M804010-N
  • 11381 Tab washer OEM 14-18323
  • 11380 Tab washer OEM 14-79447
  • 21620 Ball type 6209 made in England
  • 21580 Timken Cone M84549 -19 Canada NP and race Timken M84510 NH
  • 23220 Shim kit for bore size 3.5 OEM 15-47397A1
  • 11410 Torrington roller B1916 OEM 31-30956
  • 11190 Nut OEM 11-35920
  • 21610 Torrington AG-50936 note bearing says this side up on one side with taper lead-in on
  • P/N 25120 Price $199.29

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Seal kit shims bearings upper gearcase

Seal kit shims bearings upper gearcase

P/N 25120 Mercruiser Alpha One parts kit lower gearcase OEM 31-803090T1 $230.95