YANMAR sailing and smaller craft engines deliver the high-end performance and unequaled reliability associated with over 100 years of innovation. With the largest global support network in the marine engine industry and delivering 5x Best in Class features associated with common rail technology, YANMAR engines have become the global standard in sailboat and small craft propulsion.
3YM20 21HP
For the latest manuals, product guides, spec sheets and more, please visit Yanmar Marine’s product page.
| Rated output | 15.3 kW / 21 mhp |
| Rated Speed | 3600 rpm |
| Displacement | 0.854 L [52.1 cu in] |
| Cylinders | 3 in-line |
| Bore x Stroke | 70 mm x 74 mm |
| Type | 4-stroke, vertical, water-cooled diesel engine |
| Emission compliance | EU: RCD 2, BSO II, EMC. US: EPA Tier 3. |
| Warranty | 2 + 3 year extended warranty |
