C1.7 Tier 4 Diesel Engines - Highly Regulated

Industrial Diesel Engines C1.7

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Key Specs

Maximum Power
40.2 HP
30 kW
Maximum Torque
92 lb-ft @ 1800 rpm
125 Nm @ 1800 rpm
U.S. EPA & CARB Tier 4 Final
U.S. EPA & CARB Tier 4 Final


The new electronic Cat® C1.7 Industrial Diesel Engines, with common rail fuel system, deliver impressive performance throughout a wide speed range with exceptional power density. Ultracompact package size and extensive options make them ideal for agriculture, aerial lifts, compressors, construction, general industrial, irrigation equipment, material handling, mobile earthmoving equipment, mobile light towers, turf and landscaping, underground mining equipment, and welders.

Product Specifications for C1.7

Maximum Power 40.2 HP 30 kW
Maximum Torque 92 lb-ft @ 1800 rpm 125 Nm @ 1800 rpm
Rated Speed 2800 rpm 2800 rpm
Minimum Power 33.5 HP 25 kW
Emissions U.S. EPA & CARB Tier 4 Final U.S. EPA & CARB Tier 4 Final
Engine Configuration In-Line 3 In-Line 3
Bore 3.3 in 84 mm
Stroke 3.9 in 100 mm
Displacement 103.7 in³ 1.7 l
Compression Ratio 18.0:1 18.0:1
Aspiration Turbocharged (T) Turbocharged (T)
Combustion System Direct Injection Direct Injection
Rotation from Flywheel End Counterclockwise Counterclockwise
Aftertreatment DOC DOC
Length 25.2 in 640 mm
Width 21.4 in 545 mm
Height 28.9 in 736 mm
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 419 lb 190 kg
Length 16 in 408 mm
Weight 12.8 lb 5.8 kg
Diameter 6.1 in 155 mm

C1.7 Standard Equipment

Air Inlet System

  • Standard air cleaner
  • Turbocharger

Control System

  • Alternator 12 volt 85 amp
  • Starter motor 12 volt
  • Glow plug starting aid
  • Electronic control unit
  • Flexible and configurable software features and well supported SAE J1939 CAN bus enables highly integrated machines
  • All connectors and wiring harness are waterproof and designed to withstand harsh non-road environments
  • Robust reliable sensors

Cooling System

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

Flywheel & Flywheel Housing

  • Flywheel and flywheel housing options

Fuel System

  • Electronic 2000 bar common rail fuel system
  • Spin-on fuel filter
  • Simple pintle nozzle injectors

Lube System

  • Spin on oil filter
  • Lube oil pressure switch
  • Sump options for various applications

Power Take Off (PTO)

  • SAE A PTO drive


  • Cast iron, engine block
  • Cast iron exhaust manifold options
  • Paint: Caterpillar yellow, with optional colors available at request
  • Induction manifold options
  • Engine mounting
  • Block heater provision

U.S. EPA Tier 4 Final Aftertreatment/Clean Emissions Control Equipment

  • Diesel Oxidation Catalyst (DOC)

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