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MERCRUISER

Cooling System

GENERATION II WATER PUMP ASSEMBLY

Sequence

Description

Part #

O.E. #

Qty.

1.

Face Plate ................................................. 18-3122

817276

1

2.

Housing Assembly ....................................... N.S.S

--

1

3.

Gasket, Base ............................................. 18-2564

27-43033-1

1

4.

Gasket, Housing ........................................ 18-2566

27-817277

1

5.

Seal, Face ................................................. 18-2599

26-816575A2

1

6.

Screw, Housing ................................................ N/A

--

4

7.

Impeller ...................................................... 18-3056

47-43026-2

1

8.

Coupling Assembly ................................... 18-3151

47-43026T11

1

9.

O-Ring ....................................................... 18-7420

25-21836

2

10. Sleeve ............................................................... N/A

--

1

MR ALPHA WATER PUMP ASSEMBLY

Sequence

Description

Part #

O.E. #

Qty.

1.

Guide, Sleeve ............................................ 18-3109

23-29804

1

2.

Seal, Sleeve Guide

(Included in 18-3109) ................................ 18-3110

26-38970

1

3.

Ring, Upper ............................................... 18-7158

25-30613

1

4.

Ring, Dust .................................................. 18-7426

25-30271

1

5.

Nut, Housing ..................................................... N/A

--

1

6.

Washer, Housing ....................................... 18-4270

12-36001

3

7.

Screw, Housing ................................................ N/A

--

8.

Housing, Water Pump ............................... 18-3116

46-96148A1

1

9.

Cup, Impeller ...................................................... --

(Included in 18-3116) ................................ 18-3114

48752

1

10.

Impeller ...................................................... 18-3017

47-89984

1

11.

Gasket, Impeller ........................................ 18-2915

27-85609-1

1

12.

Plate, Impeller ........................................... 18-3117

32435

1

13.

Gasket, Stainless Steel Plate ................... 18-2914

27-85608-1

1

14.

Water Pump Base Assembly .................... 18-3420

46-44292A3

1

15.

Oil Seal, Water Pump Base

(Included in 18-3420) ................................ 18-2013

26-16977

1

16.

Gasket, Water Pump Base ....................... 18-2919

27-42631-1

1

17.

Oil Seal, Water Pump Base

(Included in 18-3420) ................................ 18-2014

26-89238

1

18.

O-Ring, Water Pump Base ........................ 18-7176

25-90011

1

19.

Pin, Alignment .................................................. N/A

--

20.

Nut, Housing ..................................................... N/A

--

21.

Washer, Housing ....................................... 18-4275

12-29245

2

626