C3.6

Industrial Diesel Engines C3.6

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Key Specs

Maximum Power
173 hp
129 kW
Maximum Torque
546 lb-ft @ 1500 rpm
740 Nm @ 1500 rpm
Emissions
U.S. EPA Tier 4 Final, EU Stage V
U.S. EPA Tier 4 Final, EU Stage V

Overview

The Cat® C3.6 packs big engine capability into a compact package, delivering up to 129 kW (173 hp) of power and 740 Nm (546 lb ft) of torque. Engineered to meet global emissions standards, it integrates seamlessly into your machine. With extended service intervals, flexible fuel options, and the proven durability expected from Cat engines, the C3.6 is built to keep your machines running strong, day after day.

Features At A Glance

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Cat

Big Engine Performance

A compact design that delivers big‑engine performance without giving up valuable space. Ideal for tight installations, it brings flexibility across machine platforms while reducing weight and complexity—giving you more usable power in a smaller footprint.
Cat

Strong, Consistent Output

With up to 129 kW (173 hp) of power and 740 Nm (546 lb ft) of torque, the engine delivers strong, consistent output with optimized fuel use. The engine‑mounted aftertreatment keeps customers installations simple while maintaining the high performance and efficiency needed for demanding work.
Cat

Long-Term Value

Service intervals of up to 1,000 hours help cut downtime and reduce operating costs. Customizable options and easy integration across platforms provide the versatility and long‑term value customers expect from Cat.
Cat

Reliable, Sustainable Performance

Built on the proven C3.6 platform, this engine is designed to perform in extreme cold, high altitudes, and tough operating conditions. Compatible with B20 biodiesel and HVO fuels, it delivers reliable, sustainable performance—without compromise.

Product Specifications for C3.6

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Maximum Power 173 hp 129 kW
Maximum Torque 546 lb-ft @ 1500 rpm 740 Nm @ 1500 rpm
Rated Speed 2200 rpm 2200 rpm
Minimum Power 173 hp 129 kW
Emissions U.S. EPA Tier 4 Final, EU Stage V U.S. EPA Tier 4 Final, EU Stage V
Number of Cylinders 4 4
Displacement 221 in³ 3.6 l
Aspiration Twin turbocharged-aftercooled (TTA) Twin turbocharged-aftercooled (TTA)
Bore 3.9 in 98 mm
Stroke 3.9 in 98 mm
Combustion System Direct injection Direct injection
Compression Ratio 17.0:1 17.0:1
Aftertreatment DOC+DPF+SCR DOC+DPF+SCR
Total Lubricating Oil Capacity 4.2 gal (US) 16 l
Rotation from Flywheel End Anti-clockwise Anti-clockwise
Cooling System Liquid Liquid
Length 33.5 in 850 mm
Width 26.8 in 680 mm
Height 41.8 in 1060 mm
Dry Weight 882 lb 400 kg
Wet Weight 937 lb 425 kg
Note 1 *Final dimensions dependent on selected options *Final dimensions dependent on selected options

See how C3.6 compares against frequently compared products.

Industrial
Selected
C3.6
C3.6
Maximum Power
173 hp
129 kW
Maximum Torque
546 lb-ft @ 1500 rpm
740 Nm @ 1500 rpm
Emissions
U.S. EPA Tier 4 Final, EU Stage V
U.S. EPA Tier 4 Final, EU Stage V
Industrial
C3.6
C3.6
Maximum Power
142 hp
106 kW
Maximum Torque
417 lb-ft @ 1500 rpm
566 Nm @ 1500 rpm
Emissions
U.S. EPA Tier 4 Final, EU Stage V, Japan 2014
U.S. EPA Tier 4 Final, EU Stage V, Japan 2014
View Details
Industrial
C3.6 for Tractors
C3.6 for Tractors
Maximum Power
134 hp
100 kW
Maximum Torque
391 lb-ft @ 1500 rpm
530 Nm @ 1500 rpm
Emissions
U.S. EPA & CARB Tier 4 Final, EU Stage V
U.S. EPA & CARB Tier 4 Final, EU Stage V
View Details

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C3.6 129kW HRC Diesel Engines - Highly Regulated

C3.6 129kW HRC Diesel Engines - Highly Regulated

C3.6 129kW HRC Diesel Engines - Highly Regulated