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Mercruiser Alpha one water pump impeller

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

89840 Mercruiser Alpha 1 water pump impeller

89840 Impeller

P/N 89840 Aftermarket Mercruiser impeller OEM 47-89974T4 $13.95

Customer who bought P/N 89840 also purchased:

12120

12120 Alpha One

P/N 12120 Water pump kit $35.95

(1984 - 1990) S/N 6854393 - OD469858
Includes:
P/N 12410 Housing 46-96148T1
P/N 89840 Impeller 47-89984T4
P/N 12510 Wear plate 32435
P/N 12820 Guide tube 23-29804TP/N 12322 Base 46-44292A3 
P/N 11070 Key 28-56654P/N 12810 Cup 48752
P/N 31010 Gasket 27-85608-1

89050 Alpha One 60932A4
89050 Alpha One 60932A4

P/N 89050 Drive shaft (u joint) bellows for all models from 1973 to 1990, serial numbers 3469428 to 0D469858. Replaces OEM 60932A4. $39.95