Mitsubishi S4Q2-61SDB vs Yanmar 4TNV84T-GGE
The Mitsubishi S4Q2-61SDB and Yanmar 4TNV84T-GGE are both diesel generator engines in a similar power class. Both are rated at roughly 24 kVA. Displacement is 2.505 L versus 2.344 L. The table below compares their full specifications side by side.
| Specification | Mitsubishi S4Q2-61SDB | Yanmar 4TNV84T-GGE |
|---|---|---|
| Headline rating | 23 kVA | 24 kVA |
| Standby (50 Hz) | 18.2 kWe | 18.9 kWe |
| Prime (50 Hz) | 16.6 kWe | — |
| Standby (60 Hz) | — | 24.1 kWe |
| Prime (60 Hz) | — | — |
| Displacement | 2.505 L | 2.344 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,485 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | U.S. EPA Tier 2 |
| Dry weight | 195 kg | — |
| Origin | Japan | Japan |
Choosing between Mitsubishi S4Q2-61SDB and Yanmar 4TNV84T-GGE
Use this comparison as an engineering shortlist, then confirm the complete generator package against load profile, voltage, 50/60 Hz frequency, duty class, emissions rules, cooling margin, altitude, ambient temperature, enclosure design, controller features, and alternator sizing. The Yanmar 4TNV84T-GGE has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.