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Alpha 1 bearing for *1.65 *1.84 *1.98 ratio gear sets

GLM Aftermarket tapered roller bearing assembly P/N 21540 for stern drive upper gearcase

  • Tapered roller bearing assembly for Alpha 1 stern drive shaft housing
  • 1.65/1.84/1.98 gear ratio
  • Timken inner cone HM89449
  • Timken outer race HM89410
  • GLM Marine aftermarket part
  • OEM 31-35990A1
  • For the 1.50 ratio tapered bearing see our tapered roller bearing page for a list of all other drive shaft housing bearings

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21540 Alpha 1 bearing 1.65 1.84 1.98 gear ratio

21540 Alpha 1 bearing 1.65 1.84 1.98 gear ratio

P/N 21540 OEM 31-35990A1 $34.95