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Power Rating
	Cat® C4.4 Industrial Power Unit View Product	Cat^® C32 Industrial Power Unit View Product Remove	Cat® C18 Industrial Power Unit View Product Remove	Cat® C7.1 Industrial Power Unit View Product Remove
Maximum Power	129.4 HP	1000 HP	630 HP	275 HP
Rated Speed	2200 rpm	1800 rpm	1800-2100	116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm
Minimum Power	129.4 HP	1000 HP	575 HP	156 HP
Maximum Torque	-	3825 lb-ft @ 1200 rpm	-	774 lb-ft @ 1400 rpm
Emission Standards
Emissions	China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA	U.S. EPA Tier 4 Final and EU Stage V	China Stage II, U.S. EPA Tier 3 Equivalent, EU Stage IIIA Equivalent or Non-Certified	China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
General
Engine Configuration	Inline 4, 4-Stroke-Cycle Diesel	V-12	Inline 6, 4-Stroke-Cycle Diesel	Inline 6, 4-Stroke-Cycle Diesel
Bore	4.1 in	5.7 in	5.7 in	4.1 in
Stroke	5 in	6.4 in	7.2 in	5.3 in
Displacement	268.5 in³	1958.9 in³	1104.5 in³	427.7 in³
Compression Ratio	16.2:1	16.0:1	16.3:1	16.8:1
Aspiration	Turbocharged Aftercooled (TA)	Twin Turbocharged Aftercooled (TTA)	Turbocharged Aftercooled (TA)	Turbocharged Aftercooled (TA)
Rotation from Flywheel End	Counterclockwise	Counterclockwise	Counterclockwise	Counterclockwise
Aftertreatment	-	DOC	-	-
Cycle	-	4	-	-
Combustion System	-	Direct Injection	-	-
Cooling System	-	liquid	-	-
Power Unit Dimensions
Length	53.5 in	100.7 in	54.6 in	68 in
Width	29.5 in	64.4 in	36.3 in	31 in
Height	37.9 in	77.6 in	48.9 in	44.8 in
Weight	1146 lb	-	4844 lb	1737 lb