Alpha 1 and Generation 2 Outdrive Parts Drawings

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Alpha one water pump impeller *lower unit part

GLM Marine aftermarket impeller
  • Water pump impeller P/N 89840 use MR, or Alpha one OEM 47-89984T4
  • Change every 2 to 3 years use grease when installing and turn drive shaft clockwise when pushing down on case at the same time
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89840 Impeller

89840 Impeller

P/N 89840 Aftermarket Mercruiser impeller OEM 47-89974T4 $18.29