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Power Rating
	Cat® C4.4 Industrial Power Unit View Product	Cat^® C32 Industrial Power Unit View Product Remove	Cat^® C9.3B Industrial Power Unit HRC View Product Remove	Cat® C4.4 Industrial Power Unit View Product Remove
Maximum Power	129.4 HP	1000 HP	456 HP	108.6 HP
Rated Speed	2200 rpm	1800 rpm	1800-2200 rpm	2200 rpm
Minimum Power	129.4 HP	1000 HP	335 HP	81.8 HP
Maximum Torque	-	3825 lb-ft @ 1200 rpm	1540 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	EU Stage V, U.S. EPA Tier 4 Final, Korea Stage V, Japan 2014 (Tier 4 Final) and China Nonroad IV	UN ECE R96 Stage IIIA
General
Engine Configuration	Inline 4, 4-Stroke-Cycle Diesel	V-12	Inline 6, 4-Stroke-Cycle-Diesel	Inline 4, 4-Stroke-Cycle Diesel
Bore	4.1 in	5.7 in	4.5 in	4.1 in
Stroke	5 in	6.4 in	5.9 in	5 in
Displacement	268.5 in³	1958.9 in³	567.5 in³	268.5 in³
Compression Ratio	16.2:1	16.0:1	17.0:1	18.2:1
Aspiration	Turbocharged Aftercooled (TA)	Twin Turbocharged Aftercooled (TTA)	Turbocharged Aftercooled (TA)	Turbocharged (T)
Rotation from Flywheel End	Counterclockwise	Counterclockwise	Counterclockwise	Counterclockwise
Aftertreatment	-	DOC	DOC+DPF+SCR	-
Cycle	-	4	-	-
Combustion System	-	Direct Injection	-	-
Cooling System	-	liquid	-	-
Power Unit Dimensions
Length	53.5 in	100.7 in	83 in	49.6 in
Width	29.5 in	64.4 in	43 in	28.9 in
Height	37.9 in	77.6 in	68.5 in	38 in
Weight	1146 lb	-	3563 lb	1025 lb
Aftertreatment Dimensions
Width	-	-	34.3 in	-
Height	-	-	22.4 in	-
Weight	-	-	468 lb	-
Aftertreatment Dimensions*
Diameter	-	-	13 in	-