C11 ACERT™ (Dry Manifold)

C11 ACERT™ Dry Manifold Engine

Cat C11 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C11 ACERT engines to deliver excellent performance with low operating costs and emissions. Equipment powered by C11 ACERT engines include workover rigs, pump skids, acidizing units, cementing units, and hydraulic power units. Cat engines are backed by the worldwide network of Cat dealers ready to support your operation with technical support, service, parts, and warranty. C11 ACERT engines, with ratings: 242-336 bkW (325-450 bhp) @ 1800-2100 rpm, meet China Stage II, EPA Tier 3 equivalent, EU Stage IIIA equivalent emission standards. They are available using U.S. EPA and EU Flexibility, and for other regulated and non-regulated areas.

Custom Packaging

For any petroleum application, trust Caterpillar to meet your project needs with custom factory generator sets and mechanical packages. Cat engines, generators, controls, radiators, and transmissions can be custom designed and matched in collaboration with our local dealers to create unique solutions. Custom packages are globally supported and are covered by a one year warranty after startup.


Caterpillar has a full line of engine-transmission packages that can be fully integrated with your axle, hydraulics, and operator interface. Cat transmissions deliver continuous operation under full load, smooth shifting at any speed, and maximum up time, with unmatched durability and easy maintenance.

Full Range of Attachments

Large variety of factory-installed engine attachments reduces packaging time


Every engine is full-load tested to ensure proper engine performance.

Product Support Offered Through Global Cat Dealer


  • More than 2,200 dealer outlets

  • Cat factory-trained dealer technicians service every aspect of your petroleum engine

  • Cat parts and labor warranty

  • Preventive maintenance agreements available for repair before-failure options

  • S·O·Sprogram matches your oil and coolant samples against Caterpillar set standards to determine: Internal engine component condition, Presence of unwanted fluids, Presence of combustion by-product

Over 80 Years of Engine Manufacturing Experience

Ownership of these manufacturing processes enables Caterpillar to produce high quality, dependable products.


For all your petroleum power requirements, visit cat.com/oilandgas.

Standard Equipment

Air Inlet System
  • Turbocharger, mid-mounted
  • Air inlet elbow 90°, 104.5 mm (4.11" OD) hose connection
Control System
  • Electronic governing, PTO speed control
  • Programmable ratings
  • Cold mode start strategy
  • Automatic altitude compensation
  • Power compensation for fuel temperature
  • Programmable low and high idle and TEL
  • Electronic diagnostics and fault logging
  • Engine monitoring system — speed, temperature, pressure
  • J1939 Broadcast — diagnostic and engine status
Cooling System
  • Thermostats and housing
  • Jacket water pump — gear-driven
  • Front water pump inlet
Exhaust System
  • Exhaust manifold — dry
  • Front turbo exhaust
Flywheels and Flywheel Housings
  • See Mandatory Options
Fuel System
  • Electronic unit injector
  • Fuel filter — secondary, mid-mount, (LH 2 micron high performance)
  • Fuel transfer pump — front
  • Fuel priming pump — LH mid-mount
Lube System
  • Crankcase breather
  • Oil cooler
  • Oil filter — RH
  • Oil pan — front sump, 40 L capacity
  • Oil filler — LH front
  • Oil dipstick — LH mid-mount
  • Oil pump
  • Oil valve sampling — on oil filter base
Power Take-Offs
  • Crankshaft pulley and damper — 250 mm (9.84 in), 2 grooves 22.3 mm (.87 in) width
  • Hydraulic pump drive — SAE A, 11 tooth
  • 1.41:1 drive ratio — counterclockwise rotation (45 lb-ft capacity)
  • Vibration damper
  • Paint — Cat yellow
  • Lifting eyes
  • Automatic variable timing, electronic
  • Electronic installation kit (connectors, pins, sockets)
  • Literature
Mandatory Options
  • Flywheel housing or rear PTO
  • Throttle position sensor
  • Primary filter/water separator

Additional information

Offering Type

General Specifications - Maximum Rating

336.0 bkW ( 450.0 BHP )

General Specifications - Displacement

11.15 l ( 681.0 in³ )

General Specifications - Minimum Rating

242.0 bkW ( 325.0 BHP )

General Specifications - Governor and Protection

Electronic (ADEM™ A3)

General Specifications - Aspiration


General Specifications - Flywheel and Flywheel Housing

SAE 1 or SAE 2

General Specifications - Flywheel Teeth

113 (SAE 1), 138 (SAE 2)

General Specifications - Rotation from Flywheel End


General Specifications - Stroke

140.0 mm ( 5.51 in )

General Specifications - Bore

130.0 mm ( 5.12 in )


EPA and CARB Non-Road Mobile Tier 3, EU Stage IIIA, IMO II

Dimensions - Length

1201.0 mm ( 47.3 in )

Dimensions - Width

1057.0 mm ( 41.6 in )

Dimensions - Height

1176.0 mm ( 46.3 in )

Dimensions - Weight

892.22 kg ( 1967.0 lb )

Capacity for Liquids - Lube Oil System - Refill

34.0 l ( 9.0 gal (US) )

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