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20.0 MEG Multiport EFI

Cylinders: 4
Bore: 3.375 in.
Stroke: 3.70 in.
Displacement: 133.30 cu. in.
Aspiration: Natural

Length: 42.20 in.
Width: 23.60 in.
Height: 27.30 in.
Weight: 741.00 lbs.

Our Newest Multiport Electronic Fuel Injection

Low-Speed, High Performance
The Westerbeke 20.0 MEG marine gasoline generator exemplifies one of the most technologically advanced, multiport EFI generators on the market. Westerbeke's unique marine design and lower operating speed combined with a modern overhead cam engine contributes to a longer lasting, more reliable product.

Multiport EFI and Returnless Fuel System
The 20.0 MEG features sequential multiport electronic fuel injection (MPI). MPI provides optimum fuel efficiency, easy starting, improved reliability and reduced emissions. In conjunction with MPI, electronic speed control maintains the engine at a constant speed (precise frequency regulation) and virtually eliminates "bogging down" when load is applied. A water cooled, returnless fuel system aids in the prevention of vapor lock for improved performance in high ambient temperatures. MPI also features advanced diagnostic capabilities.

Smooth and Quiet Operation
Featuring a 4-cylinder engine operating at an electronically controlled 1800 rpm, the 20.0 MEG is extremely smooth and quiet running.

Five Year Limited Warranty
The 20.0 MEG is backed by Westerbeke's 5-year limited warranty. The presence of Westerbeke in over 65 countries around the world provides customers with easy access to parts, service and technical support. Established in 1937, Westerbeke is committed to providing its customers with quality products and unequaled after sales support.

Standard Features

  • Simple, "one-touch" start/stop control panel
    with running hour meter and LED lights
  • Multiport electronic fuel injection
  • Water cooled, returnless fuel system
  • Electronic governing
  • Safety shut-downs-overspeed, underspeed, low oil
    pressure, high exhaust and coolant temperature
  • Fresh water cooling and coolant recovery tank
  • Field convertible to 50 or 60Hz
  • A.C. circuit breaker
  • 50 amp battery charging alternator
  • Water injected exhaust elbow
  • Belt-driven, raw water pump
  • Vibration isolators
  • Lube oil drain hose
  • Belt guard
  • Operator's manual and parts list
  • EPA & CARB compliant 
  • Meets applicable U.S.C.G. regulations

Optional Equipment

  • Remote start/stop panel
  • Remote lube oil filter 
  • Ship-shore transfer switch
  • Hydro-hush muffler
  • Anti-siphon valve
  • "A" on board spare parts kit
  • "B" extended cruising spare parts kit





Technical Documents

Important Note: Technical information is provided on our website for your reference and convenience. Westerbeke recommends that your engine, generator or climate control system is serviced and/or installed only by an authorized Westerbeke distributor or dealer. Click here to locate the Master Distributor or Dealer for your area.

Advanced Specifications
Document Name Publication Date
  Advanced Specifications 8/1/2021
Manuals (Operators, Parts, Technical, Installation)
Document Name Publication Date
  Parts Manual 1/1/2022
  Technical Manual 1/1/2022
  Operator’s Manual 057749 1/1/2022
  Installation Manual - Marine Engines & Generators 6/1/2016
  Westerbeke Superseded Parts Listing August 2015 8/1/2015
Guides (Troubleshooting)
Document Name Publication Date
Diagnostic Software
Document Name Publication Date
  EC11_Download 8/1/2021
Diagrams (Wiring, Installation)
Document Name Publication Date
  Installation Drawing 57791 10/10/2020
Bulletins (Service, Parts, Product Recalls)
Document Name Publication Date
  Parts Bulletin 2008-4: Paint Storage

Applies To: All Models





Buy and View Parts Below : Click each image for a larger view and detailed list of the parts for that section. If images do not appear under a "Complete Parts Lists" heading, please scroll down to access the parts related information available for this model.


Download Parts Documentation
Document Name Publication Date
  Parts Manual 1/1/2022
Superseded Parts List
Document Name Publication Date
  Westerbeke Superseded Parts Listing August 2015 8/1/2015