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Demanding conditions, applications and environments make the Cat® C7.1 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 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 Industrial Diesel Engines, with ratings: 129-225 bkW (172-301.8 bhp) @ 2200 rpm, meet U.S. EPA Tier 4 Final, EU Stage V 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)
Engine Configuration
In-Line 6, 4-Stroke-Cycle Diesel
Turbocharged-Aftercooled (TA) or Series Turbocharged Aftercooled (TTA)

Emission Standards

U.S. EPA Tier 4 Final Nonroad, EU Stage V Nonroad Emissions Standards

Power Rating

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

Engine Dimensions - Approximate

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