Kirloskar 4R1040T vs Perkins 1104D-44TG2
The Kirloskar 4R1040T and Perkins 1104D-44TG2 are both diesel generator engines in a similar power class. Both are rated at roughly 66 kVA. Displacement is 4.2 L versus 4.4 L. The table below compares their full specifications side by side.
| Specification | Kirloskar 4R1040T | Perkins 1104D-44TG2 |
|---|---|---|
| Headline rating | 66 kVA | 66 kVA |
| Standby (50 Hz) | 53 kWe | 53 kWe |
| Prime (50 Hz) | 48.3 kWe | 48 kWe |
| Standby (60 Hz) | 62.5 kWe | — |
| Prime (60 Hz) | 57.1 kWe | — |
| Displacement | 4.2 L | 4.4 L |
| Configuration | L4 | L4 |
| Cylinders | 4 | 4 |
| Rated speed | 1,500 / 1,800 RPM | 1,500 RPM |
| Fuel | Diesel | Diesel |
| Cooling | Liquid-Cooled | Liquid-Cooled |
| Emissions | U.S. EPA Tier 2 | Euro Stage IIIA / U.S. EPA Tier 3 |
| Dry weight | — | — |
| Origin | India | China |
Choosing between Kirloskar 4R1040T and Perkins 1104D-44TG2
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.