JCB 448 SV-129 vs John Deere 4045CG440
The JCB 448 SV-129 and John Deere 4045CG440 are both diesel generator engines in a similar power class. Both are rated at roughly 123 kVA. Displacement is 4.8 L versus 4.5 L. The table below compares their full specifications side by side.
| Specification | JCB 448 SV-129 | John Deere 4045CG440 |
|---|---|---|
| Headline rating | 124 kVA | 121 kVA |
| Standby (50 Hz) | 99 kWe | 97 kWe |
| Prime (50 Hz) | 90 kWe | 87 kWe |
| Standby (60 Hz) | 116.1 kWe | 111 kWe |
| Prime (60 Hz) | 105.3 kWe | 101 kWe |
| Displacement | 4.8 L | 4.5 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Euro Stage V | U.S. EPA Final Tier 4 |
| Dry weight | — | — |
| Origin | United Kingdom | United States |
Choosing between JCB 448 SV-129 and John Deere 4045CG440
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 JCB 448 SV-129 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.