Perkins 403D-07G vs Yanmar 3TNM68-GGE
The Perkins 403D-07G and Yanmar 3TNM68-GGE are both diesel generator engines in a similar power class. The Perkins 403D-07G is the higher-output unit (8 kVA vs 7 kVA). Displacement is 0.7 L versus 0.668 L. The table below compares their full specifications side by side.
| Specification | Perkins 403D-07G | Yanmar 3TNM68-GGE |
|---|---|---|
| Headline rating | 8 kVA | 7 kVA |
| Standby (50 Hz) | — | 5.5 kWe |
| Prime (50 Hz) | — | — |
| Standby (60 Hz) | 6 kWe | 6.6 kWe |
| Prime (60 Hz) | 6 kWe | — |
| Displacement | 0.7 L | 0.668 L |
| Configuration | L3 | L3 |
| Cylinders | 3 | 3 |
| Rated speed | 1,800 RPM | 1,500 / 1,800 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 3 | U.S. EPA Tier 2 |
| Dry weight | — | — |
| Origin | China | Japan |
Choosing between Perkins 403D-07G and Yanmar 3TNM68-GGE
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 Perkins 403D-07G has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.