Engine
| Engine Model | Cat® C7.1 Cat® C7.1 |
| Bore | 4.1 in 105 mm |
| Displacement | 427.8 in³ 7 l |
| Stroke | 5.3 in 135 mm |
| Engine Emissions | Meets U.S. EPA Tier 3 and EU Stage IIIA emission standards. Meets U.S. EPA Tier 3 and EU Stage IIIA emission standards. |
| Note (1) | The M320 meets Tier 3 and Stage IIIA emission standards. Net power is tested per ISO 9249:2007. Standards in effect at the time of manufacture. Net power available at flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator with engine speed at 2,000 rpm. The M320 meets Tier 3 and Stage IIIA emission standards. Net power is tested per ISO 9249:2007. Standards in effect at the time of manufacture. Net power available at flywheel when the engine is equipped with fan, air cleaner, muffler, and alternator with engine speed at 2,000 rpm. |
| Note (2) | No engine power derating required below 3,000 m (9,843 ft) altitude. No engine power derating required below 3,000 m (9,843 ft) altitude. |
| Note (3) | Recommended for use up to 3000 m (9,843 ft) altitude with engine power derate above 3000 m (9,840 ft). Recommended for use up to 3000 m (9,843 ft) altitude with engine power derate above 3000 m (9,840 ft). |
| Note (4) | Rated speed at 2,000 rpm. Rated speed at 2,000 rpm. |
