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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® C1.5 Diesel Engine

The Cat® C1.5 Industrial Diesel Engine is offered in ratings ranging from 18.4-27.6 bkW (24.7-37.0 bhp) @ 1800-3000 rpm and meet U.S. EPA Tier 4 Final emission standards. Ratings: 20.9-30.0 bkW (28.0-40.2bhp) @ 2200-3000 rpm meet EU Stage IIIA emission standards and are also available in Europe and other regions. Industries and applications powered by C1.5 engines include: Aircraft Ground Support, Auxiliary Power Units, Bore/Drill Rigs, Chippers and Grinders, Compactors/Rollers, Construction, Forestry, General Industrial, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Pumps, Trenchers, Turf and Landscaping, Underground Mining Equipment and Welders.

Product Details

Power Rating

Minimum Power 18.4 bkW
Maximum Power 30.0 bkW
Rated Speed 2100-3000 rpm

Emission Standards

Emissions U.S. EPA Tier 4 Final or EU Stage IIIA


Engine Configuration In-Line 3, 4-Stroke-Cycle Diesel
Bore 84 mm (3.3 in)
Stroke 90 mm (3.5 in)
Displacement 1.496 L (91 in³)
Aspiration Naturally Aspirated (NA) or Turbocharged (T)
Compression Ratio 22.5:1
Combustion System Indirect Injection
Rotation (from flywheel end) Counterclockwise
Cooling System Capacity 2.6 L (2.75 qt)
Lube System (refill) 6 L (6.3 qt)

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

Length 572 mm (22.5 in)
Width 453-512 mm (17.8-20.2 in)
Height 643 mm (25.3 in)
Weight - Net Dry (Basic Operating Engine Without Optional Attachments) 149-156.5 kg (328.5-345 lb)

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

Length 449 mm, 17.6 in (Tier 4 Final only)
Weight 13 kg (28.7 lb) (Tier 4 Final, >19 kW/25 hp only)
Diameter 170 mm (6.7 in) (Tier 4 Final only)
  • Air Inlet System
    •  Inlet manifold with choice of inlets.
  • Control System
    •  Alternator 12 volt 65 amp
    •  Starter motor 12 volt
    •  Glow plug starting aid
    •  Tier 4 Final: Alternator 12V 85 amp
  • Alternator 12 volt 65 amp
    • Starter motor 12 volt
      • Glow plug starting aid
        • Tier 4 Final: Alternator 12V 85 amp
          • Cooling System
            •  Belt-driven coolant pump
            •  Coolant temperature switch
            •  Choice of cooling fans
          • Belt-driven coolant pump
            • Coolant temperature switch
              • Choice of cooling fans
                • Flywheel & Flywheel Housing
                  •  Naturally Aspirated: SAE No. 7 1/2 flywheel
                  •  Naturally Aspirated: Choice of SAE No. 4 or standard backplate flywheel housing
                  •  Turbocharged: SAE No. 6 1/2 or SAE No. 7 1/2 flywheel
                  •  Turbocharged: Choice of SAE No. 4 or SAE No. 5 or standard backplate flywheel housing
                  •  EPA Tier 4 Final Turbocharged: SAE No. 7 1/2 flywheel
                  •  Tier 4 Final Turbocharged: Choice of SAE No. 4 or SAE No. 5 or standard backplate flywheel housing
                • Fuel System
                  •  Fuel injection pump
                  •  Spin-on fuel filter
                  •  Electronic Shut-off Solenoid (ESOS)
                • Fuel injection pump
                  • Spin-on fuel filter
                    • Electronic Shut-off Solenoid (ESOS)
                      • Lube System
                        •  Alternative oil fillers
                        •  Spin-on lube oil filter
                        •  Lube oil pressure switch
                        •  Lube oil sump
                      • Power Take Off (PTO)
                        •  Provision for Power Take Off (PTO)
                      • General
                        •  Cast iron, engine block
                        •  Cast iron exhaust manifold--side outlet
                        •  Cold start capability to -20° C (-4° F)
                        •  Gradeability 35° continuous
                      • Tier 4 Final Aftertreatment / Clean Emissions Control Equipment)
                        •  Diesel Particulate Filter (DPF)
                        •  Diesel Oxidation Catalyst (DOC)
                        •  Passive Regeneration System with Backup
                      • Diesel Particulate Filter (DPF)
                        • Diesel Oxidation Catalyst (DOC)
                          • Passive Regeneration System with Backup
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