YANMAR powerboat engines deliver outstanding power, speed, efficiency, and reliability. Our engines have proven to be the ideal solution for multiple applications, commercial and recreational, given a customizable options range – available for shaft, stern, and jet drives, with SOLAS and semi 2-pole option, high power primary and secondary alternators, purpose-built plug & play interconnectivity to any NMEA or J1939 device, and more. YANMAR engines deliver 5x Best in Class product features with the added benefit of the best global support network in the marine industry.
6LY2A-STP 440HP
For the latest manuals, product guides, spec sheets and more, please visit Yanmar Marine’s product page.
| Rated output | 315 kW / 427 mhp & 324 kW / 440 mhp |
| Rated Speed | 3300 rpm |
| Displacement | 5.813 L [354 cu in] |
| Cylinders | 6 in-line |
| Bore x Stroke | 106 mm x 110 mm |
| Type | 4-stroke, vertical, water-cooled diesel engine |
| Emission compliance | EU: RCD 1, IMO Tier 2, EMC. |












