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New pump service kit: Includes impeller , 2 marine seals with 316SS garter springs , gasket , o-ring , SS Hex/Slot screws , & lube pack.

Here is a link if you do not need the lip seals , save a few dollars.  Westerbeke Impeller repair service kit Sierra Johnson Raw Sea Water Pump Onan 

Replaces:

Westerbeke 32620 , 032620

Onan 132-0311 , MAJB / MME / MCE , MDKUB / WB , 

Sierra 23-3305 , 233305

Johnson 09-45589

Fits Westerbeke models:

4.0 BCG(60Hz)

3.0 BCG(50Hz)

4.5 BCG(60Hz)

3.75 BCG(50Hz)

4.5 BCGB(60Hz)

3.75 BCGB(50Hz)

4.5 BCGTC(60Hz)

3.75 BCGTC(50Hz)

6.5 BCG(60Hz)

4.8 BCG(50Hz)

7.0 BCG(60Hz)

5.0 BCG(50Hz)

7.0 BCGA(60Hz)

5.0 BCGA(50Hz)

7.0 BCGB(60Hz)

6.0 BCGB(50Hz)

7.2 BCGTC(60Hz)

6.0 BCGTC(50Hz)

9.0 BTG(60Hz)

7.0 BTG(50Hz)

9.6 BCGTC(60Hz)

8.0 BCGTC(50Hz)

3.0 WMD(60Hz)

2.4 WMD(50Hz)

3.8 BCDT(60Hz)

4.2 BCDT(60Hz)

3.5 BCDT(50Hz)