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Power Rating
	Cat® C7.1 Industrial Power Unit View Product	Cat® C4.4 Industrial Power Unit View Product Remove	Cat^® C9.3B Industrial Power Unit HRC View Product Remove
Maximum Power	275 HP	129.4 HP	456 HP
Maximum Torque	774 lb-ft @ 1400 rpm	-	1540 lb-ft @ 1400 rpm
Rated Speed	116-205 bkW/156-275 bhp @ 2200 rpm, 129 bkW/173 bhp @ 2500 rpm	2200 rpm	1800-2200 rpm
Minimum Power	156 HP	129.4 HP	335 HP
Emission Standards
Emissions	China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA	China Nonroad Stage III, Brazil MAR-1, UN ECE R96 Stage IIIA	EU Stage V, U.S. EPA Tier 4 Final, Korea Stage V, Japan 2014 (Tier 4 Final) and China Nonroad IV
General
Engine Configuration	Inline 6, 4-Stroke-Cycle Diesel	Inline 4, 4-Stroke-Cycle Diesel	Inline 6, 4-Stroke-Cycle-Diesel
Bore	4.1 in	4.1 in	4.5 in
Stroke	5.3 in	5 in	5.9 in
Displacement	427.7 in³	268.5 in³	567.5 in³
Compression Ratio	16.8:1	16.2:1	17.0:1
Aspiration	Turbocharged Aftercooled (TA)	Turbocharged Aftercooled (TA)	Turbocharged Aftercooled (TA)
Rotation from Flywheel End	Counterclockwise	Counterclockwise	Counterclockwise
Aftertreatment	-	-	DOC+DPF+SCR
Power Unit Dimensions
Length	68 in	53.5 in	83 in
Width	31 in	29.5 in	43 in
Height	44.8 in	37.9 in	68.5 in
Weight	1737 lb	1146 lb	3563 lb
Aftertreatment Dimensions
Width	-	-	34.3 in
Height	-	-	22.4 in
Weight	-	-	468 lb
Aftertreatment Dimensions*
Diameter	-	-	13 in