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Industrial Diesel Engines - Highly Regulated

Cat® industrial engines are ready for your application. These engines deliver the unsurpassed reliability, durability, fuel efficiency, and low cost of ownership you have come to expect from Caterpillar. And our world-class product support will never let you down. All this adds up to a powerful advantage for you. Every Cat industrial diesel and gas engine comes with 75 years of engine experience. Our world-class product line of high-speed and medium-speed industrial engines in a wide range of applications offer power solutions for the most demanding installations and the harshest environments. With power options from 8.2 to 6,100 bkW (11 to 8,180 bhp), Cat industrial diesel and gas engines offer the widest power range in the industry.

Cat® C0.5 Diesel Engine

The Cat® C0.5 Industrial Diesel Engine is offered in ratings ranging from 4.1-6.4 bkW (5.5-8.6 bhp) @ 2000-2800 rpm. These ratings meet U.S. EPA Tier 4 Final emission standards. Ratings: 8.2-10.2 bkW (11.0-13.7 bhp) @ 2800-3600 rpm are also 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. Industries and applications powered by C0.5 engines include: Auxiliary Power Units, Compactors/Rollers, Mobile Earthmoving Equipment, Mobile Light Towers and Turf and Landscaping.

  • Specification Summary

  • Minimum Power8.2 bkW
  • Maximum Power10.2 bkW
  • Frequency2000-3600 rpm
  • EmissionsFor Use in Regions Where Less Than 19 kW Ratings Are Not Required to Meet an Emission Standard
  • Engine ConfigurationIn-Line 2, 4-Stroke-Cycle

Product Details

Power Rating

Minimum Power 8.2 bkW
Maximum Power 10.2 bkW
Frequency 2000-3600 rpm

Emission Standards

Emissions For Use in Regions Where Less Than 19 kW Ratings Are Not Required to Meet an Emission Standard


Engine Configuration In-Line 2, 4-Stroke-Cycle
Bore 67 mm (2.64 in)
Stroke 72 mm (2.83 in)
Displacement 0.5 L (31 in³)
Aspiration Naturally Aspirated (NA)
Compression Ratio 23.5:1
Combustion System Indirect Injection
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 1.1 L (1.16 qt)
Lube System (refill) 1.6-2.0 L (1.7-2.1 qt)

Engine Dimensions (Approximate. Final dimensions dependent on selected options)

Length 407 mm (16 in)
Width 371 mm (14.6 in)
Height 523 mm (20.6 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments) 57 kg (126 lb)
  • Air Inlet System
    •  Inlet manifold with choice of inlets.
  • Control System
    •  Alternator 12 volt 14 amp
    •  Starter motor 12 volt
    •  Glow plug starting aid
  • Cooling System
    •  Belt-driven coolant pump
    •  Coolant temperature switch
    •  Choice of cooling fans
  • Flywheel and Flywheel Housing
    •  U.S. EPA Tier 4 Final: Standard backplate flywheel housing and flatface flywheel
  • Fuel System
    •  Fuel injection pump
    •  Spin-on fuel filter
    •  Electronic Shut-off Solenoid (ESOS)
  • Lube System
    •  Closed circuit breather
    •  Spin-on lube oil filter
    •  Lube oil pressure switch
    •  Lube oil sump
  • General
    •  Cast iron, engine block
    •  Cast iron exhaust manifold--side outlet
    •  Cold start capability to -20° C (-4° F)
    •  Gradeability 35° continuous
    •  Paint: Caterpillar yellow, with optional colors available at request

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