Alpha 1 and Generation 2 Outdrive Parts Drawings

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Mercruiser Alpha One water pump kit *Repair video

Outdrive and engine water circulating pumps

  • Compatible with all Chevy/GM and Ford inboard motors and all Alpha 1 models (1984 and up)
  • Mercruiser sterndrives Water pump #12120 and #88020 include the key - most competitor do not include this part
  • Full 2 year warranty on all GLM Marine products
  • Make sure to grease the drive shaft when installing the housing and impeller, and use a gasket sealant on the gaskets
  • GLM drive shaft adaptor tool can be used to turn drive shaft clockwise when fitting housing and impeller together

Lower Unit - Outdrive Water Pumps

Please click on photo for exploded view

12120 water

12120 water

P/N 12120 Alpha 1 lower unit water pump-seal kit combination 1984-1990. $35.15

(1984 - 1990) S/N 6854393 - OD469858
Includes:
P/N 89840 Water pump kit 47-89984T4
P/N 12410 Housing 46-96148T1
P/N 12322 Base 46-44292A3
P/N 12510 Wear plate 32435
P/N 11070 Key 28-56654
P/N 12820 Guide tube 23-29804T
P/N 12810 Cup 48752
P/N 31010 Gasket 27-85608-1

Sierra 18-3320

Sierra 18-3320

Sierra / Teleflex 18-3320 / 1984 - 1990. #46-44292A5. $43.00

88020 Sterndrive pump 1984-1990

88020 Sterndrive pump 1984-1990

P/N 88020 Complete stern drive rebuild set $99.15
(1984 - 1990) S/N 6225577 - OD469858
*Includes all seals for upper and lower unit
Parts included:
P/N 89840 47-89984T4
P/N 12410 Housing 46-96148T1
P/N 12322 Base 46-44292A3
P/N 12510 Wear plate 32435
P/N 11070 Key 28-56654
P/N 12820 Guide tube 23-29804T
P/N 12810 Cup 48752
P/N 31010 Gasket 27-85608-1
P/N 81160 O-ring 25-30613
P/N 81390 O-ring 25-90011
P/N 81180 O-ring 25-25439
P/N 31020 Gasket 25-858524
P/N 31010 Gasket 27-85608-1
P/N 31050 Gasket 27-42631-1
P/N 85040 Oil seal 26-16977
P/N 85070 Oil seal 26-89238
P/N 85581 Oil seal 26-816464
P/N 85700 Oil seal 26-12224
P/N 85140 Seal 26-45577-1
P/N 12830 Seal 25-39970
P/N 21330 25-30271
80420 O-ring 25-32546
P/N 80190 O-ring 25-55801
P/N 81180 O-ring 25-25439
P/N 82380 O-ring 25-70937
P/N 85020/85060/85030 Oil seals 26-32511/26-96503/26-823894
P/N 31150 Gasket 27-55810-1
P/N 85150 Grommet 26-36557

12043 Impeller kit OEM 47-43026K06

12043 Impeller kit OEM 47-43026K06

P/N 12043 Impeller kit for Mercruiser 1991 and up models.
Impeller $31.15

Includes coupling assembly P/N 12824 #816597A1
(1991 and up) S/N OD469859 and up

Parts included:
P/N 89630 / 47-43026T2
P/N 12824 / 816597A1 Coupling assembly
P/N 12500 / 817276-1 Wear plate
P/N 30090 / 27-43033-1 Gasket
P/N 82110 / 25-21836 O Ring
P/N 85590 / 26-816575A2 Seal
P/N 31240 / 27-817277 Gasket

12080

12080

P/N 12080 Impeller set $57.15

Includes carrier assembly P/N 12341 OEM 807929A1
Alpha One Generation 2 - Mercruiser (1991 and up) S/N OD469859 and up

Parts included:
P/N 12500 Wear plate / 817276-1
P/N 30090 Gasket / 27-43033-1
P/N 89630 / 47-43026T2
P/N 12341 Carrier assembly / 807929A1
P/N 31240 / 27-817277

817275Q4

817275Q4

P/N 12414 Most popular complete rebuild set. Replaces 817275T4. $99.15 Includes steel housing P/N 12413 Generation 2 - Mercruiser (1991 and up) S/N OD469859 and up.

 

Sierra / Teleflex 18-3147 Rebuild set for Generation 2 - 1991 and up $149.15

12290 Impeller gasket kit OEM 47-89984T5

12290 Impeller gasket kit OEM 47-89984T5

12290 Impeller, o rings and gaskets service kit OEM 47-89984T5

12040 Alpha generation 2 water pump parts

12040 Alpha generation 2 water pump parts

12040 Alpha One Generation 2 service kit OEM 47-43026O5

12280 Water pump kit 65 to 225 hp

12280 Water pump kit 65 to 225 hp

12280 Alpha One impeller kit OEM 46-96148T8

39530 gasket kit

39530 gasket kit

39530 Alpha One gasket and o ring kit (GLM)

89630 Alpha 1 Gen-2 1991 up

89630 Alpha 1 Gen 2 1991 up

89630 Alpha 1 Generation 2 replacement impeller

89840 Impeller Mercruiser 1967-1990

89840 Impeller Mercruiser 1967-1990

89840 Mercruiser Alpha One replacement impeller

11070 Key 1967-1990

11070 Key 1967-1990

11070 Alpha One replacement key OEM 28-56654

11071 Key Alpha 1 1991 up

11071 Key Alpha 1 1991 up

11071 Alpha One Generation 2 replacement key OEM 28-43037

Engine Cooling

12097 Engines with serpentine belt
12097 Engines with serpentine belt

Belt driven sea water pump assembly

P/N 12097
Sea Water Pump Assembly OEM 46-807151A9
For V6 / V8 Engines with Serpentine Belt
Body: Cast Brass
Impellers: Neoprene
Shaft: Stainless Steel
Bearing: Steel Ball
Bearing Housing: Cast Brass

12093 V belt brass sea water pump

12093 V belt brass sea water pump

P/N 12093
Sea Water Pump Assembly OEM 46-807151Al2, 46-72774A32
For V6 / V8 Engines with V-belt
Body: Cast Brass
Impellers: Neoprene
Shaft: Stainless Steel
Ports: 1-1/4 Stainless Steel Bearing: Steel Ball

12115 V belt brass sea water pump

12115 V belt brass sea water pump

P/N 12115
Sea Water Pump Assembly for V6 and V8 engines with V-belt
Body: Cast Brass
Impellers: Neoprene
Shaft: Stainless Steel
Ports: 1-1/4 Stainless Steel Bearing: Steel Ball
Bearing Housing: Cast Brass
Stainless Steel Screws
Brass Impeller Housing

12088 Sea water pump service kit

12088 Sea water pump service kit

P/N 12088
Sea water pump rebuild kit OEM 47.807151A14
All Bravo and Mercruiser Alpha One (one piece and two piece) pumps. For GLM one piece brass body pump.

15201 Chevy GM V6-V8 small block

15201 Chevy GM V6-V8 small block

P/N 15201 GM/Chevy V6 / V8 small block $91.15
*Includes mounting gaskets P/N 31380 / 27-34897
Fits metal and composite timing cover chain
229 3.8 liter, 262 4.3 liter, 305 5.0 liter and 350 5.7 liter

15100

15100

P/N 15100 Chevy inline 4 / 6 cylinder marine engine circulating pump $91.15
Includes mounting gasket P/N 31350 / 827-33956
153 2.5 liter, 181 3.0 liter and 250 4.0 liter engines

15301

15301

P/N 15301 Chevy V8 big block $138.00
Includes mounting gasket P/N 31770 OEM 27-49110
Works with both tin and aluminum timing cover chain
409 6.6 liter, 427 6.9 liter, 454 7.4 liter and 502 8.2 liter engines

15400 Ford 302-351 V8

15400 Ford 302-351 V8

P/N 15400 Ford V8 small block $121.00
Includes mounting gasket P/N 31900 / 27-56880
302 CID 5.0 Liter / 351 CID 5.8 Liter