For sale Yanmar 3YM20 21 HP Marine Diesel Engine. Engine was professionally removed from a running sailboat and was operational at the time of removal.
ENGINE DESCRIPTION
The 3YM20 is one of Yanmar’s most popular modern auxiliary sailboat engines, known for:
- Excellent fuel economy
- Smooth 3-cylinder operation
- Low vibration and noise
- Long service life and easy maintenance
YANMAR 3YM20 – OEM FACTORY SPECIFICATIONS
Specification Details
- Engine Model :Â Yanmar 3YM20
- Horsepower :Â 21 HP @ 3600 RPM
- Cylinders :Â 3
- Displacement :Â 1.267 L (1267 cc)
- Bore x Stroke :Â 75 mm x 72 mm
- Aspiration :Â Naturally Aspirated
- Fuel System :Â Mechanical Direct Injection
- Cooling System :Â Freshwater / Heat Exchanger
- Electrical System :Â 12V
- Starting :Â Electric
- Emissions :Â EPA / RCD Compliant
- Approx. Dry Weight : ~ 233–260 lbs














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