Mercruiser outdrive parts | Alpha one lower unit repairs

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Mercruiser Alpha one water pump kit | Lower unit

4 cylinder, V6 and V8 GM and Chevy outdrives

  • All GLM Marine aftermarket water pump kits kits include: seal, gaskets, o-rings and impeller
  • When installing, make sure to use gasket sealing compound on o-rings and gaskets (shown below)
  • 1967 - 1990 Mercruiser models (up to Alpha One gen 1)
  • GLM Marine recirculating engine water pumps

Photo

Description / OEM #

Price
(USD)

Price
(Canadian)

12110 Water pump kit

12110 Water pump kit

P/N 12110 lower unit water pump kit (1970 - 1983, serial numbers 2763442-6854392)

Parts included:

12312 46-57234T1 Base
12410 46-96148T1 Housing
12510 32435-1 Wear Plate
12820 23-29804T Guide Tube
21330 25-30271 Slinger
31010 27-85608-1 Gasket
31020 27-858524 Gasket
31040 27-856704 Gasket
31170 (2) 12-19183-3 Gasket
81160 25-30613 O-ring
85140 26-45577-1 Seal
89840 47-89984T4 Impeller

$44.95

$54.95

88010 Service kit

88010 Service

P/N 88010 Water pump kit complete rebuild, includes upper and lower unit seals and gaskets. (1970 - 1983, serial numbers 2763442-6854392)

$140.95

$185.95

12120 Alpha 1 pump

12120 Alpha 1

P/N 12120 Impeller kit for Mercruiser outdrives with housing (1984 - 1990 serial numbers 6854393-OD469858)

Parts included:

12321 46-57234A1 Base
12410 46-96148T1 Housing
12510 32435-1 Wear Plate
12820 23-29804T Guide Tube
21330 25-30271 Slinger
31010 27-85608-1 Gasket
31020 27-858524 Gasket
31040 27-856704 Gasket
31170 (2) 12-19183-3 Gasket
81160 25-30613 O-ring
85140 26-45577-1 Seal
89840 47-89984T4 Impeller

$37.95

$47.95

88020

88020

P/N 88020 Outdrive service, includes impeller and upper housing and lower gearcase seal kit. (1984 - 1990 serial numbers 6854393-OD469858)

$140.95

$185.95

12130

12130 Mercruiser impeller MC-1

P/N 12130 Parts (1966 - 1969, serial numbers 2495186-2763441)

$70.95

$93.95

12290-7-89984T5

12290

P/N 12290 Impeller service, without housing. (1966 - 1990, serial numbers 2495186-OD469858)

Parts included:
12510 32435-1 Wear Plate
12820 23-29804T Guide Tube
12830 26-38970 Grommet
21330 25-30271 Slinger
31010, 31020, 31030, 31040 Gaskets
31170 (2) 12-19183-3 Gasket
81390, 81160, 82260, 82250 O-ring
85140 26-45577-1 Seal
89840 47-89984T4 Impeller

$25.95

$32.95

39530-Gaskets

39530

P/N 39530 Mercruiser water pump housing gasket and seal, without housing. Years 1966 to 1990, serial numbers 2495186-OD469858

$21.95

$25.95

12043 47-43026K06 Alpha one generation 2

12043

P/N 12043 Impeller kit (1991 and up Alpha One Generation 2 with serial numbers OD469859 and up

Parts included:
11071 Key
12500 Wear plate
12824 Coupling Assembly

30009 Gasket
31170 Gasket
31240 Gasket
85140 Seal
85590 Seal
89630 Impeller

$37.95

$49.95

12080 Gen 2

12080 Gen 2

P/N 12080 Alpha One Generation 2 water pump impeller kit for years 1991 and up Generation 2, serial numbers OD469859 and up

Parts included:
12341 Carrier assembly
12500 Wear plate
30009 Gasket
31240 Gasket
89630 Impeller

$57.95

$75.95

89840 Impeller

89840 Impeller

P/N 89840 Impeller, 1966-1990 (MC-1, R, MR, Alpha 1 serial numbers 2495186-OD469858)

47-89984T4

$16.95

$21.95

89630 Impeller 47-43026T2

89630

P/N 89630 Impeller, 1991 - present Alpha One Generation 2, serial numbers OD469859 and up)

47-43026T2

$19.95

$23.95

508235 OMC Johnson Compound

508235 OMC Johnson Compound

P/N 508235 Gasket sealing compound. This sealant is used on the o-rings and gaskets when re-sealing the outdrive.

$24.95

$32.95

 

GLM Marine recirculating Mercruiser engine water pumps

  • Stainless Steel Backing Plate
  • Stainless banded ceramic seal seat
  • Bi-Directional and Balanced
  • Stainless steel seal cup and spring
  • Machined Brass Impeller
  • Epoxy Painted Pump Housing

   
 

P/N 15201
Chevrolet inline 4 cylinder water pump
OEM: 884727, 3854017

153 CID - 2.5 Liter
181 CID - 3.0 Liter

   
 

P/N 15201
Inline 6 Cylinder engines small block engine water pumps
OEM: 884727, 3854017

229 CID - 3.8 Liter
262 CID - 4.3 Liter
250 CID - 4.0 Liter
305 CID - 5.0 Liter
350 CID - 5.7 Liter

   
 

P/N 15301
Chevrolet V8 big block engines
New style water pump OEM: 850454 with 409 CID

6.6 Liter 427 CID
6.9 Liter 454 CID
7.4 Liter 502 CID -
8.2 Liter

   

Install instructions for V4, V6 and V8 engines

Complete water pump kit

  1. Slide water tube grommet into water pump housing, then install guide tube with grommet onto water pump housing.
  2. Install gasket compound on small 0-ring into water pump housing and install impeller cup.
  3. Glue seal into groove on water pump housing, set aside.
  4. Clean gasket surface on gearcase. Install gasket and impeller plate onto gearcase.
  5. Install key and 0-ring onto driveshaft. Slide impeller down driveshaft with 0-ring groove facing down, until it seats.
  6. Lightly lubricate impeller housing with soapy water. Do not install impeller dry use a weel bearing grease.
  7. Slide impeller housing over impeller.
  8. While turning driveshaft in a clockwise direction push down on impeller housing.
  9. Tighten bolts, grease driveshaft splines.