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Power Rating
	Cat^® C7.1 ACERT™ Diesel Engine View Product	Cat® C27 Industrial Power Unit View Product Remove	Cat^® C32 Industrial Power Unit View Product Remove
Maximum Power	320 HP	950 HP	1000 HP
Maximum Torque	935 lb-ft @ 1400 rpm	3211 lb-ft @ 1200 rpm	3825 lb-ft @ 1200 rpm
Rated Speed	2200 rpm	1800 rpm	1800 rpm
Minimum Power	172 HP	800 HP	1000 HP
Emission Standards
Emissions	U.S. EPA & CARB Tier 4 Final, EU Stage V	U.S. EPA Tier 4 Final, EU Stage V	U.S. EPA Tier 4 Final and EU Stage V
General
Engine Configuration	In-Line 6	V-12, 4-Stroke-Cycle Diesel	V-12
Bore	4.1 in	5.7 in	5.7 in
Stroke	5.3 in	6 in	6.4 in
Displacement	427.7 in³	1649.5 in³	1958.9 in³
Compression Ratio	16.5:1	16.0:1	16.0:1
Aspiration	Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)	Twin Turbocharged-Aftercooled (TTA)	Twin Turbocharged Aftercooled (TTA)
Combustion System	Direct Injection	-	Direct Injection
Rotation from Flywheel End	Counterclockwise	Counterclockwise	Counterclockwise
Aftertreatment	DOC+DPF+SCR	DOC	DOC
Cycle	-	-	4
Cooling System	-	-	liquid
Engine Dimensions - Approximate
Length	41.9 in	-	-
Width	31.4 in	-	-
Height	35.9 in	-	-
Weight - Net Dry - Basic Operating Engine Without Optional Attachments	1658 lb	-	-
Aftertreatment Dimensions
Length	29 in	-	-
Width	30.3 in	-	-
Height	18.1 in	-	-
Weight	236 lb	-	-
Aftertreatment Dimensions*
Diameter	13.3 in	-	-
Power Unit Dimensions
Height	-	-	77.6 in
Length	-	-	100.7 in
Width	-	-	64.4 in