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

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Alpha One Water Pump Base Kit

Lower Unit Water Pump Housing Base Kit

  • P/N 12320 Pump housing base replaces OEM 46-44292A3, Sierra 18-3420
  • Compatible with 1984 - 1990 models only (serial numbers 6854393-OD469858)
  • Includes gaskets and o ring

Tech support exploded view Alpha One drawings
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12320 Water Pump Housing 46-44292A3

P/N 12320 Water pump base $23.29

Customers who ordered P/N 12320 also purchased:

87510 Seal Kit
87510 Seal Kit 26-33144A2
P/N 87510 Replaces OEM 26-33144A2 $38.95

12120 Alpha 1 Outdrive 1984-1990
12120 Alpha 1 Outdrive 1984-1990

39622 Bell Housing Gasket 27-94996A2
39622 Bell Housing Gasket 27-94996A2
P/N 39622 Bell housing outdrive gasket kit. Replaces OEM 27-94996A2. $6.15

317201 Large Sealant Johnson
317201 Large Sealant-Johnson
P/N 317201 Large gasket sealant. 16 ounce. $24.15

P/N 508235 Small size. 4 ounce. $19.15