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Demanding conditions, applications and environments make the Cat® C7.1 ACERT engines the perfect solution for your severe duty equipment. With decades of diesel engine innovation and expertise behind these engines, they deliver the low operating costs and legendary Cat reliability and durability that give you a powerful advantage. More importantly, they're backed by the world-class Cat dealer network ready to service and support every Cat industrial engine. Industries and applications powered by C7.1 ACERT engines include: Agriculture, Ag Tractors, Aircraft Ground Support, Bore/Drill Rigs, Chippers/Grinders, Combines/Harvesters, Compactors/Rollers, Compressors, Construction, Cranes, Crushers, Feller Bunchers, Forestry, Forklifts, General Industrial, Hydraulic Power Units, Irrigation Equipment, Loaders/Forwarders, Material Handling, Mining, Mobile Earthmoving Equipment, Mobile Sweepers, Paving Equipment, Pumps, Skidders, Specialty Ag Equipment, Sprayers, Trenchers and Underground Mining Equipment. Cat® C7.1 ACERT™ Industrial Diesel Engines, with ratings: 140-225 bkW (187.7-301.8 bhp) @ 2200 rpm, meet U.S. EPA Tier 4 Interim, EU Stage IIIB emission standards. Ratings: 116-225 bkW (156-302 bhp) @ 2200 rpm are designed to meet U.S. EPA Tier 4 Final, EU Stage IV emission standards. This information about Emissions describes the particular rating's emissions technology. For more information about emissions certification, please contact your local Cat dealer.

Cat Specs


105 mm (4.1 in)
135 mm (5.3 in)
7 L (427.7 in³)
Combustion System
Direct Injection
Compression Ratio
Rotation from Flywheel End
Cooling System - Capacity
15.2 L (16 qt)
Lube System - Refill
13-16 L (13.7-16.9 U.S. qts)
Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)
Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel

Emission Standards

U.S. EPA Tier 4 Final Nonroad, EU Stage IV Nonroad, U.S. EPA Tier 4 Interim Nonroad Equivalent (Not Currently EPA Certified) and EU Stage IIIB Nonroad Equivalent (Non-Current for EU) Emission Standar

Power Rating

Minimum Power
156 BHP
Maximum Power
302 BHP
Rated Speed
2200 rpm

Engine Dimensions - Approximate

1063.7 mm (41.9 in)
Weight - Net Dry - Basic Operating Engine Without Optional Attachments
715 kg (1576 lb)
907 mm (35.7 in)
753-820.2 mm (29.6-32.3 in)