C3.6 for Tractors

Cat® C3.6 Industrial Diesel Engine for Tractors

The Cat® C3.6 agricultural tractor engine offers the perfect balance of compact size, reliability, and performance. This engine is offered in ratings ranging up to 90 kW (121 hp) @ 2400 rpm.

The C3.6 is designed to meet the specific requirements of agricultural tractors including structural sump with integral twin balancer shafts.


Meets R96 Stage IIIA and Brazil MAR-1

Reliable, Quiet and Durable Power

World-class manufacturing capability and processes coupled with proven technologies and extensive field validation assure reliability and durability in tough nonroad applications.

High Performance

Leading edge fuel systems and turbocharging provide high torque even at lower engine speeds

Broad Application Range

Industry leading range of factory configurable ratings and options to enable a solution for your machine.

Low Cost Maintenance

Worldwide service delivers ease of maintenance and simplifies the servicing routine. Capable of optimal oil change intervals of 500 hours. The S•O•S℠ program is available from your Cat dealer to determine oil change intervals and provide optimal performance.


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

World-class Product Support Offered Through Global Cat Dealer Network

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

Documents & Brochures

Standard Equipment

Control System
  • Starter motor (12V)
  • Alternator (12V)
  • Electronic Control Unit (chassis mounted)
  • Engine control sensors and robust wiring harness
  • Data interface via CANbus SAE J1939
Flywheels and Flywheel Housing
  • Agricultural back plate for transmission mounting
  • Choice of flywheel to match industry common hydraulic pumps and transmissions
  • Side PTO with SAE A or SAE B interface
Fuel System
  • Fuel filter - chassis mounted
  • With water sensor
Lube System
  • Lubricating oil filters
  • High incline oil pan - 25 degrees continuous in all directions
  • Cold start capability to -25° C (-13° F)
  • Paint: Caterpillar yellow, with optional colors available at request

Additional information

Offering Type

Power Rating - Maximum Power

90 kW ( 121 HP )

Power Rating - Maximum Torque

500 Nm @ 1500 rpm ( 369 lb-ft @ 1500 rpm )

Power Rating - Rated Speed

2200-2400 rpm

Power Rating - Minimum Power

55 kW ( 74 HP )

Emission Standards - Emissions

UN ECE R96 Stage IIIA, Brazil MAR-1

General - Engine Configuration

Inline 4, 4-Stroke-Cycle Diesel

General - Bore

98 mm ( 3.9 in )

General - Stroke

120 mm ( 4.7 in )

General - Displacement

3.6 l ( 220 in³ )

General - Compression Ratio


General - Aspiration

Turbocharged Aftercooled (TA)

General - Combustion System

Direct Injection

General - Rotation from Flywheel End


General - Aftertreatment

Engine Dimensions - Approximate - Length

681 mm ( 26.8 in )

Engine Dimensions - Approximate - Width

564 mm ( 22.2 in )

Engine Dimensions - Approximate - Height

855 mm ( 33.7 in )

Engine Dimensions - Approximate - Weight - Net Dry - Basic Operating Engine Without Optional Attachments

381 kg ( 840 lb )

Select Up To 3 Models To Compare