Perkins 4012-46TAG3A vs VMAN DE58B4
The Perkins 4012-46TAG3A and VMAN DE58B4 are both diesel generator engines in a similar power class. Both are rated at roughly 1,881 kVA. Displacement is 46 L versus 57.2 L. The table below compares their full specifications side by side.
| Specification | Perkins 4012-46TAG3A | VMAN DE58B4 |
|---|---|---|
| Headline rating | 1,880 kVA | 1,881 kVA |
| Standby (50 Hz) | 1,504 kWe | — |
| Prime (50 Hz) | 1,368 kWe | — |
| Standby (60 Hz) | 1,504 kWe | 1,505 kWe |
| Prime (60 Hz) | 1,368 kWe | 1,368 kWe |
| Displacement | 46 L | 57.2 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | United Kingdom | China |
Choosing between Perkins 4012-46TAG3A and VMAN DE58B4
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 VMAN DE58B4 has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.