Kohler KDI2504TM vs Yanmar 4TNV98-ZGGES
The Kohler KDI2504TM and Yanmar 4TNV98-ZGGES are both diesel/hvo generator engines in a similar power class. Both are rated at roughly 39 kVA. Displacement is 2.482 L versus 3.119 L. The table below compares their full specifications side by side.
| Specification | Kohler KDI2504TM | Yanmar 4TNV98-ZGGES |
|---|---|---|
| Headline rating | 39 kVA | 38 kVA |
| Standby (50 Hz) | — | 30.5 kWe |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 31 kWe | 36.7 kWe |
| Prime (60 Hz) | 28 kWe | — |
| Displacement | 2.482 L | 3.119 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel/HVO | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | U.S. EPA Tier 3 |
| Dry weight | 300 kg | — |
| Origin | Italy | Japan |
Choosing between Kohler KDI2504TM and Yanmar 4TNV98-ZGGES
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 Kohler KDI2504TM has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.