C1.7 Standard Equipment

Air Inlet System

  • Inlet manifold with choice of inlets.

Control System

  • Alternator 12 volt 40 amp
  • Starter motor 12 volt
  • Glow plug starting aid

Cooling System

  • Belt-driven coolant pump
  • Coolant temperature switch
  • Choice of cooling fans

Flywheel & Flywheel Housing

  • SAE No. 6 1/2 flywheel
  • Choice of SAE No. 5 or standard backplate flywheel housing

Fuel System

  • Fuel injection pump
  • Spin-on fuel filter
  • Electronic Shut-off Solenoid (ESOS)

Lube System

  • Lube oil filter
  • Lube oil pressure switch
  • Lube oil sump


  • 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

Select Units


Cat® C1.7 Industrial Diesel deliver impressive performance throughout a wide speed range with exceptional power density. Their ultra-compact package size and extensive choice of options ensures these engines are ideal for a wide range of small, off road applications. Single-side servicing improves ease of maintenance and lowers overall owner operating costs. Industries and applications powered by C1.7 engines include: Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Compactors/Rollers, Construction, Forestry, General Industrial, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Light Towers, Pumps, Trenchers, Turf and Landscaping and Underground Mining Equipment. C1.7 engines, with ratings: 23.6 & 26.1 bkW (31.6 & 35 bhp) @ 2400 & 2600 rpm, meet EPA Tier 4 Interim equivalent emission standards. They are available using U.S. EPA Flexibility, and for other regulated and non-regulated areas.

Power Rating

  • Minimum Power 31.6 BHP 23.6 bkW
  • Maximum Power 35.0 BHP 26.1 bkW
  • Rated Speed 2400 & 2600 rpm 2400 & 2600 rpm

Emission Standards

  • Emissions U.S. EPA Tier 4 Interim Equivalent U.S. EPA Tier 4 Interim Equivalent


  • Engine Configuration Inline 3, 4-Stroke-Cycle Diesel Inline 3, 4-Stroke-Cycle Diesel
  • Bore 84 mm (3.3 in) 84 mm (3.3 in)
  • Stroke 100 mm (3.9 in) 100 mm (3.9 in)
  • Aspiration Naturally Aspirated (NA) Naturally Aspirated (NA)
  • Displacement 1.662 L (101.4 in³) 1.662 L (101.4 in³)
  • Compression Ratio 23.0:1 23.0:1
  • Combustion System Indirect Injection Indirect Injection
  • Rotation from Flywheel End Counterclockwise Counterclockwise
  • Lube System - Refill 10.6 L (11.2 qt) 10.6 L (11.2 qt)

Engine Dimensions - Approximate

  • Height 654 mm (25.7 in) 654 mm (25.7 in)
  • Length 564 mm (22.2 in) 564 mm (22.2 in)
  • Weight - Net Dry - Basic Operating Engine Without Optional Attachments 160 kg (353 lb) 160 kg (353 lb)
  • Width 453 mm (17.8 in) 453 mm (17.8 in)


Meets U.S. EPA Tier 4 Interim equivalent emission standards. Available using U.S. EPA Flexibility, and for other regulated and non-regulated areas.


Every Cat engine is manufactured to stringent quality standards in order to assure customer satisfaction.

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