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Cat® C4.4 Diesel Engine
Cat® C4.4 Industrial Power Unit
Cat® C7.1 Industrial Power Unit

Power Rating

Maximum Power 111.3 HP 129.4 HP 275 HP
Maximum Torque 308 lb-ft @ 1400 rpm - 774 lb-ft @ 1400 rpm
Rated Speed 2200-2400 rpm 2200 rpm 116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm
Minimum Power 72.4 HP 129.4 HP 156 HP

Emission Standards

Emissions UN ECE R96 Stage IIIA China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA

Engine Dimensions - Approximate

Length 26.1 in - -
Width 23.7 in - -
Height 30.5 in - -
Weight - Net Dry - Basic Operating Engine Without Optional Attachments 674.6 lb - -

General

Engine Configuration Inline 4, 4-Stroke-Cycle Diesel Inline 4, 4-Stroke-Cycle Diesel Inline 6, 4-Stroke-Cycle Diesel
Bore 4.1 in 4.1 in 4.1 in
Stroke 5 in 5 in 5.3 in
Displacement 269 in³ 268.5 in³ 427.7 in³
Compression Ratio 18.2:1 16.2:1 16.8:1
Aspiration Naturally Aspirated (NA), Turbocharged (T) or Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA) Turbocharged Aftercooled (TA)
Combustion System Direct Injection - -
Rotation from Flywheel End Counterclockwise Counterclockwise Counterclockwise
Aftertreatment - - -

Power Unit Dimensions

Length - 53.5 in 68 in
Width - 29.5 in 31 in
Height - 37.9 in 44.8 in
Weight - 1146 lb 1737 lb
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