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Maximum Power24.6 HP (18.4 kW)
Maximum Torque63.4 lb-ft @ 1800 rpm (86 Nm @ 1800 rpm)
EmissionsU.S. EPA Tier 4 Final
Rated Speed2200/2800 rpm
The Cat® C1.5 Industrial Diesel Engine is offered in rating 18.4 bkW (24.7 bhp) @ 1800 rpm and meet U.S. EPA Tier 4 Final emission standards. 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.


Maximum Power24.6 HP (18.4 kW)
Maximum Torque63.4 lb-ft @ 1800 rpm (86 Nm @ 1800 rpm)
EmissionsU.S. EPA Tier 4 Final
Rated Speed2200/2800 rpm
Minimum Power24.6 HP (18.4 kW)
Engine ConfigurationIn-Line 3
Bore3.3 in (84 mm)
Stroke3.5 in (90 mm)
Displacement91 in³ (1.496 l)
Compression Ratio22.5:1
AspirationNaturally Aspirated (NA)
Combustion SystemIndirect Injection
Rotation from Flywheel EndCounterclockwise
Length22.5 in (572 mm)
Width17.9 in (453 mm)
Height25.3 in (643 mm)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments327 lb (148 kg)

Benefits and Features

World-class manufacturing capability and processes coupled with proven core engine designs assure reliability, quiet operation, and many hours of productive life.

Substantial torque rise delivers impressive performance throughout a wide speed range while maintaining low operating costs.

Fuel consumption optimized to match operating cycles of a wide range of equipment and applications while maintaining low operating costs.

Industry leading range of factory configurable ratings and options for agricultural, material handling, construction, mining, aircraft ground support, and other industrial applications.

Ultra-compact package size ensures ease of installation as well as exceptional power density.

  • Scheduled maintenance, including SOSSM sample
  • Cutsomer Support Agreements (CSA)
  • Caterpillar Extended Service Coverage (ESC)
  • Superior dealer service network
  • Extended dealer service network through the Cat Industrial Service Distributor (ISD) program

Standard Equipment

  • Inlet manifold with choice of inlets.
  • Alternator 12 volt 65 amp
  • Starter motor 12 volt
  • Glow plug starting aid
  • Tier 4 Final: Alternator 12V 85 amp
  • Belt-driven coolant pump
  • Coolant temperature switch
  • Choice of cooling fans
  • Naturally Aspirated: SAE No. 7 1/2 flywheel
  • Naturally Aspirated: Choice of SAE No. 4 or standard backplate flywheel housing
  • Fuel injection pump
  • Spin-on fuel filter
  • Electronic Shut-off Solenoid (ESOS)
  • Alternative oil fillers
  • Spin-on lube oil filter
  • Lube oil pressure switch
  • Lube oil sump
  • Provision for Power Take Off (PTO)
  • Cast iron, engine block
  • Cast iron exhaust manifold--side outlet
  • Cold start capability to -20° C (-4° F)
  • Gradeability 35° continuous