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

T.C. Electronics / Marine ( 416 ) 751-7326 home page

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

Exploded view Mercruiser drawings
Search by part number or description here

89840 Impeller

89840 Impeller

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

Customer who bought P/N 89840 also purchased:

12120 Alpha One

12120 Alpha One

P/N 12120 Water pump kit $35.15

(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. $38.15