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Westerbeke W 21 Engine

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As an Authorized Westerbeke Dealer, Diesel Parts Direct carries a great selection of genuine diesel engine parts. We stock most popular Westerbeke products like oil and fuel filters, and impeller kits and have them ready for immediate shipment. If you know the correct part number, please enter it in the search box located in the navigation bar, or use any of our quick links below to access the most common parts available for this model.

If you do not see the parts you are looking for, please use our quote request form or call us at 888.650.2771: our knowledgeable inside sales staff will gladly help you.


RAW WATER PUMP IMPELLER KIT (FOR WB-024143 PUMP)

$62.90

ZINC - 108B SIX / 11.0 BTD / 12.5 BTDA (1/4 NPT X 1-3/4)

$17.07

FUEL SHUT-OFF SOLENOID - 10.0 BTD / 11.0 BTD / 12.5 BTDA (12V DC)

$210.05

THERMOSTAT GASKET - 12.5 WMD / 4.4 WMD / 6.0 WMD

$3.16

HEAT EXCHANGER - 12.5 WMD / 4.4 WMD / 6.0 WMD

$851.35

SPARE PARTS - 6.0 WMD / 8.0 WMD (KIT A)

$328.74

SPARE PARTS - 8.0 WMD (DELUXE KIT A)

$1,761.25

FUEL INJECTOR RETURN LINE - W 21 / W 27

$71.44

FUEL FILTER ELEMENT - 10.0 BTD / 11.0 BTD / 12.5 BTDA (WITH O-RINGS)

$15.78

FUEL INJECTOR NOZZLE - 10.0 BTD / 11.0 BTD / 12.5 BTDA

$196.07

GASKET - 4.4 WMD (FRESH WATER PUMP TO ADAPTER)

$4.63

OIL PAN GASKET - 10.0 BTD / 35B-THREE / 6.0 BCD (3 CYLINDER)

$120.56

FUEL INJECTION PUMP - 6.0 BCD / 8.0 BTD / 8.0 WMD

$1,616.48

FRESH WATER PUMP - 10.0 BTD / 11.0 BTD / 12.5 BTDA

$356.35

FAN BELT - 6.0 BCD / 8.0 WMD / 8.5 BTG (38.5 X O)

$25.24

UPPER ENGINE GASKET SET - 8.0 BTD

$583.05

COMPLETE ENGINE GASKET SET - 8.0 BTD / 8.0 WMD

$1,265.82

HEAT EXCHANGER END CAP - 12.5 WMD / 4.4 WMD / 6.0 WMD

$50.01

HEAT EXCHANGER END CAP - 12.5 WMD / 4.4 WMD / 6.0 WMD

$6.31

FRONT ISOLATOR - W41G / W70G (PRIOR TO JANUARY 1987)

$211.94

FUEL HARDWARE KIT - 10.0 BTD / 11.0 BTD / 12.5 BTDA

$126.13

CYLINDER HEAD GASKET - 6.0 BCD / 6.0 WMD

$200.54

WATER INJECTED EXHAUST ELBOW (45deg)

$140.10

OIL FILTER - 10.0 BTD / 20B TWO / 30B THREE (SPIN-ON)

$19.16