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

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

Mercruiser Alpha One 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)
  • When installing gaskets, make sure to use a sealing compound

Exploded view Mercruiser drawings
Search by part number or description here

12410 Pump Housing

12410 Pump Housing

P/N 12410 Water pump housing (top) 24-30893 $31.29

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 $35.15

12120 Alpha 1 outdrive water
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. $35.15

12043 Impeller kit 47-43026K06
12043 Impeller kit 47-43026K06
P/N 12043 Generation 2 rebuild parts. Replaces OEM 47-43026K06. $31.15

39622 Bell Housing Gasket 27-94996A2
39622 Bell Housing Gasket 27-94996A2
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. $9.15

317201 Large Sealant-Johnson
317201 Large Sealant-Johnson
P/N 317201 Large gasket sealant (includes brush inside lid). 16 ounce. $24.15 *Smaller size also available