John Deere 4045HF280 vs Yuchai YC4A100Z-D25
The John Deere 4045HF280 and Yuchai YC4A100Z-D25 are both diesel generator engines in a similar power class. Both are rated at roughly 81 kVA. Displacement is 4.5 L versus 4.75 L. The table below compares their full specifications side by side.
| Specification | John Deere 4045HF280 | Yuchai YC4A100Z-D25 |
|---|---|---|
| Headline rating | 81 kVA | 80 kVA |
| Standby (50 Hz) | — | 64 kWe |
| Prime (50 Hz) | — | 60 kWe |
| Standby (60 Hz) | 65 kWe | — |
| Prime (60 Hz) | 58 kWe | — |
| Displacement | 4.5 L | 4.75 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 3 | China National Stage II / Unregulated |
| Dry weight | — | — |
| Origin | United States | China |
Choosing between John Deere 4045HF280 and Yuchai YC4A100Z-D25
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 John Deere 4045HF280 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.