Hino W04D vs Perkins 404D-22TAG
The Hino W04D and Perkins 404D-22TAG are both diesel generator engines in a similar power class. Both are rated at roughly 40 kVA. Displacement is 4 L versus 2.216 L. The table below compares their full specifications side by side.
| Specification | Hino W04D | Perkins 404D-22TAG |
|---|---|---|
| Headline rating | 40 kVA | 40 kVA |
| Standby (50 Hz) | 32 kWe | — |
| Prime (50 Hz) | 28.8 kWe | — |
| Standby (60 Hz) | 38.4 kWe | 32.1 kWe |
| Prime (60 Hz) | 34.6 kWe | 29.2 kWe |
| Displacement | 4 L | 2.216 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,500 / 1,800 RPM | 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Euro Stage IIIA / U.S. EPA Tier 4 Interim |
| Dry weight | — | — |
| Origin | Japan | United Kingdom |
Choosing between Hino W04D and Perkins 404D-22TAG
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.