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Mercruiser water pump kit years 1984 to 1990

Mercruiser / Alpha 1 Lower Unit Water Pump with Impeller

  • Complete kit includes water pump housing, impeller, key, gaskets and seals
  • Works with 120/140 4 cylinder, 470, 165 inline 6 cylinder, 260 and all V8 Mercruiser models
  • Compatible with Mercruiser MR / Alpha 1 sterndrive lower units from 1984 - 1990 with serial numbers 6854393 - OD469858

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12120 MR Alpha 1984-1990

12120 MR Alpha 1984-1990

P/N 12120 $35.15

Parts Included in Kit

89840 Impeller OEM 47-89984T4

89840 Impeller OEM 47-89984T4

P/N 89840 OEM 47-89984T4 Water pump impeller $17.00

11070 Key

11070 Key

P/N 11070 OEM 28-56654 Key $4.00

12410 housing

12410 housing

P/N 12410 OEM 46-96148T1 Water pump housing $28.00

12320 base

12320 base

P/N 12322 OEM 46-44292A3 Water pump base $21.00

12820 Tube guide

12820 Tube guide

P/N 12820 OEM 23-29804T Guide tube $4.00

12810 cup

12810 cup

P/N 12810 OEM 48752 Water pump cup $5.00

12510 Wear plate

12510 Wear plate

P/N 12510 OEM 32435 Wear plate $4.00

31020

31020

P/N 31010 OEM 27-85608-1 Gasket $4.00

P/N 12120 OEM N/A Lower unit water pump impeller kit $35.00

Our kit includes the impeller key P/N 11070 OEM 28-56654
Most competitor kits do not include the key.