Caterpillar CG170B-12 vs Weichai 12M55D1588A0NG
The Caterpillar CG170B-12 and Weichai 12M55D1588A0NG are both natural gas generator engines in a similar power class. Both are rated at roughly 1,738 kVA. Displacement is 53.1 L versus 66 L. The table below compares their full specifications side by side.
| Specification | Caterpillar CG170B-12 | Weichai 12M55D1588A0NG |
|---|---|---|
| Headline rating | 1,725 kVA | 1,750 kVA |
| Standby (50 Hz) | — | — |
| Prime (50 Hz) | 1,380 kWe | 1,400 kWe |
| Standby (60 Hz) | — | — |
| Prime (60 Hz) | — | — |
| Displacement | 53.1 L | 66 L |
| Configuration | V12 | V12 |
| Cylinders | 12 | 12 |
| Rated speed | 1,500 RPM | 1,500 RPM |
| Fuel | Natural Gas | Natural Gas |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | Unregulated | Unregulated |
| Dry weight | — | — |
| Origin | Germany | China |
Choosing between Caterpillar CG170B-12 and Weichai 12M55D1588A0NG
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 Weichai 12M55D1588A0NG has the higher headline kVA rating in this pair, but site conditions and duty cycle can still change the final recommendation.