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

T.C. Electronics / Marine ( 416 ) 751-7326 home page | Alpha One - Mercruiser Shift Shaft Bushing

Mercruiser Alpha 1 gimbal bearing *Bell housing part

Aftermarket bearing with tolerance ring

  • Includes tolerance ring - bearing must be lubricated when assembled (does not come pre-greased)
  • Always replace the oil seal when installing a new bearing
  • P/N 21905 Alpha One gimbal bearing replaces GLM #21900
  • OEM 30-862540A3, 30-60794A4

Tech support exploded view outdrive drawing
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21900 Gimbal bearing

21900 Gimbal bearing heavy duty

P/N 21905 $44.29

Customers who ordered P/N 21905 also purchased:

GLM 12120 Water pump

GLM 12120 Water pump

P/N 12120 Alpha 1, Gen 1 lower unit complete water pump impeller kit. Compatible with 1984-1990 models. Replaces Sierra 18-3320. $35.95