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Cat® C9 ACERT™ Industrial Power Unit
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The Cat® C9 ACERT™ Industrial Power Unit is offered in ratings ranging from 205-261 bkW (275-350 bhp) @ 2200 rpm. These ratings meet China Stage II, U.S. EPA Tier 3 equivalent, or EU Stage IIIA equivalent emission standards. Ratings: 223-261 bkW (300-350 bhp) @ 1800-2200 rpm meet China Stage II, U.S. EPA Tier 2 equivalent, EU Stage II equivalent emission standards. Conveniently pre-configured for a wide range of applications, the Cat® Industrial Power Unit is a complete power package containing a radiator, flywheel, alternator and alternator wiring completely pre-assembled for fast, straightforward installation in a number of OEM, customer and packager applications. These fuel efficient units are ready made for irrigation, industrial, mining and other pump applications.

Standard Equipment

Emission Standards

China Stage II, U.S. EPA Tier 2 Equivalent or U.S. EPA Tier 3 Equivalent, EU Stage II Equivalent or EU Stage IIIA Equivalent


Engine Configuration
Inline 6, 4-Stroke-Cycle Diesel
112 mm (4.41 in)
149 mm (5.87 in)
8.8 L (537 in³)
Turbocharged Aftercooled (TA)
Compression Ratio
Rotation (from flywheel end)
Cooling System Capacity
44 L (46.5 qt)
Lube System (refill)
32 L (33.8 qt)

Power Unit Dimensions (Approximate. Final dimensions dependent on selected options)

2174.4 mm (85.81 in)
987.8 mm (38.89 in)
2008.1 mm (79.06 in)
Weight - Net Dry (Standard configuration without oil, cooling, clutch, compressor, A/C)
1490 kg (3285 lb)

Power Rating

Minimum Rating
275.0 bhp
Maximum Rating
350.0 bhp
1800-2200 rpm
  • Air Inlet System
  • Control System
  • Cooling System
  • Exhaust System
  • Flywheels and Flywheel Housing
  • Fuel System
  • Lube System
  • General