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The Cat® C1.1 Industrial Power Unit is offered in ratings ranging from 14.4-18.4 bkW/19.3-24.7 bhp @ 2200-2800 rpm. These ratings meet U.S. EPA Tier 4 Final emission standards. Ratings: 17.3-18.1 bkW (23.2-24.3 bhp) @ 2800-3000 rpm are available for Europe and, depending on applicable emission standards, may be introduced in other regulated areas. Nonroad engines less than 19 kW (25 hp) are not currently subject to EU 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.

Cat Specs


77 mm (3.03 in)
81 mm (3.19 in)
1.131 L (69 in³)
Compression Ratio
Rotation from Flywheel End
Cooling System - Capacity
5.21 L (5.5 qt)
Lube System - Refill
4.9 L (5.2 qt)
Naturally Aspirated (NA)
Engine Configuration
Inline 3, 4-Stroke-Cycle Diesel

Emission Standards

14.4-18.4 bkW (19-24.7 bhp) meet U.S. EPA Tier 4 Final. Other ratings available for Europe and other regions.

Power Rating

Minimum Power
19.3 BHP
Maximum Power
26.4 BHP
Rated Speed
3000 rpm

Power Unit Dimensions - Approximate

Weight - Approximate, Net Dry - Standard Configuration Without Oil, Cooling, Clutch, Compressor, A/C
129 kg (284 lb)
730 mm (28.7 in)
438 mm (17.2 in)
778 mm (30.6 in)