Mercruiser Alpha 1 Water Pump Housing

Alpha One & Gen 2 Outdrive Parts *Drawings *Videos

Mercruiser Alpha 1 Water Pump Housing

Stern Drive Lower Unit Water Pump Housing

GLM P/N 12405 replaces OEM 42724A3-1
Upper water pump housing is compatible with 1970 - 1990 models (MC-1, R, MR / Alpha 1 fist generation)
Complete lower unit impeller rebuild kits are also available (see below)
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When installing gaskets, make sure to use a sealing compound

12410 Pump Housing

P/N 12410 Water pump housing (top) 24-30893 $29.95

Customers who ordered P/N 12410 also purchased:

87510 Seal Kit 26-33144A2

87510 Seal Kit 26-33144A2

P/N 87510 Replaces OEM 26-33144A2 $42.95

12120 Alpha 1 outdrive water

P/N 12120 lower unit water pump assembly for 1984 - 1990 models lower unit. Compatible with serial numbers 6854393-OD469858. $42.99

12043 Impeller kit 47-43026K06

P/N 12043 Generation 2 rebuild parts. Replaces OEM 47-43026K06. $44.99

39622 OMC Bell housing gasket kit

39622 OMC Bell housing gasket kit

P/N 39622 Gasket kit - fits between the outdrive and bell housing. Use gasket sealing compound (available below) on both sides of gasket. Replaces OEM 27-94996A2. $9.95

317201 Large Sealant-Johnson

317201 Large Sealant-Johnson

P/N 508235 Gasket sealant (includes brush inside lid). 4 ounce. $24.95