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Power Rating
	Cat^® C7.1 Industrial Power Unit View Product	Cat® C4.4 Industrial Power Unit View Product Remove	Cat® C4.4 Industrial Power Unit View Product Remove
Maximum Power	302 HP	108.6 HP	129.4 HP
Maximum Torque	940 lb-ft @ 1400 rpm	-	-
Rated Speed	1800-2200 rpm	2200 rpm	2200 rpm
Minimum Power	202 HP	81.8 HP	129.4 HP
Emission Standards
Emissions	U.S. EPA Tier 4 Final, EU Stage V, Japan 2014 (Tier 4 Final)	UN ECE R96 Stage IIIA	China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA
General
Engine Configuration	Inline 6, 4-Stroke-Cycle Diesel	Inline 4, 4-Stroke-Cycle Diesel	Inline 4, 4-Stroke-Cycle Diesel
Bore	4.1 in	4.1 in	4.1 in
Stroke	5.3 in	5 in	5 in
Displacement	427.7 in³	268.5 in³	268.5 in³
Compression Ratio	16.5:1	18.2:1	16.2:1
Aspiration	Series Turbocharged Aftercooled (TTA)	Turbocharged (T)	Turbocharged Aftercooled (TA)
Rotation from Flywheel End	Counterclockwise	Counterclockwise	Counterclockwise
Aftertreatment	DOC+DPF+SCR	-	-
Power Unit Dimensions
Length	69.6 in	49.6 in	53.5 in
Width	36.1 in	28.9 in	29.5 in
Height	57.5 in	38 in	37.9 in
Weight	2204 lb	1025 lb	1146 lb
Aftertreatment Dimensions
Length	30.4 in	-	-
Width	31.2 in	-	-
Height	18.4 in	-	-
Weight	198 lb	-	-