C11 ACERT™ (Dry Manifold)

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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.

General Specifications

Minimum Rating 325.0 BHP 242.0 bkW Less
Maximum Rating 450.0 BHP 336.0 bkW Less
Governor and Protection Electronic (ADEM™ A3) Electronic (ADEM™ A3) Less
Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled Less
Displacement 681.0 in³ 11.15 l Less
Flywheel and Flywheel Housing SAE 1 or SAE 2 SAE 1 or SAE 2 Less
Flywheel Teeth 113 (SAE 1), 138 (SAE 2) 113 (SAE 1), 138 (SAE 2) Less
Rotation from Flywheel End Counterclockwise Counterclockwise Less
Stroke 5.51 in 140.0 mm Less
Bore 5.12 in 130.0 mm Less


Emissions EPA and CARB Non-Road Mobile Tier 3, EU Stage IIIA EPA and CARB Non-Road Mobile Tier 3, EU Stage IIIA Less


Length 47.3 in 1201.0 mm Less
Width 41.6 in 1057.0 mm Less
Height 46.3 in 1176.0 mm Less
Weight 1967.0 lb 892.22 null Less

Capacity for Liquids

Lube Oil System - Refill 9.0 gal (US) 34.0 l Less

Engine Design

- Proven reliability and durability - Robust diesel strength design prolongs life and lowers owning and operating costs - Broad operating speed range - High power density — lightweight engine for weightsensitive applications

Advanced Digital Engine Management

ADEM A3 control system providing integrated ignition, speed governing, protection, and controls, including detonation-sensitive variable ignition timing. ADEM A3 has improved: user interface, display system, shutdown controls, and system diagnostics.

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 repairbefore-failure options - S•O•SSM program 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.

Web Site

For all your petroleum power requirements, visit www.catoilandgasinfo.com.

C11 ACERT™ (Dry Manifold)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

C11 ACERT™ (Dry Manifold)Optional Equipment

Air Compressor
  • Expansion chamber
  • Governors
  • Fittings

Air Inlet System
  • Air cleaners
  • Precleaners
  • Turbo air inlet
  • Air lines

Belt-Driven Accessories
  • Refrigerant compressor and mounting

Charging System
  • Charging alternators
  • Alternator mountings
  • Alternator guard
  • Alternator accessories

Control System
  • Connection

Cooling System
  • Radiator — installed
  • Fan drive f/u/w Caterpillar installed radiator
  • Fan drive pulleys f/u/w customer-supplied radiators
  • Coolant conditioner
  • Water lines — pump inlet
  • Fan drive mountings
  • Fan height instructions
  • Fan adapters for suction fans
  • Fan adapters for blower fans
  • Suction fans
  • Blower fans
  • Coolant level sensor
  • Aftercooler lines

Exhaust System
  • Muffler
  • Flexible fitting
  • Elbows
  • Straight exhaust adapter
  • Flange
  • Pipe
  • Rain cap
  • Clamp

Fuel System
  • Fuel lines
  • Fuel cooler
  • Fuel fitting — fuel return and supply connections
  • Flexible fuel lines

  • Gauges and instrument panels
  • Voltmeters
  • Gauge mounting
  • Ammeter

Lube System
  • Oil pan
  • Oil pan drain
  • Oil level gauges
  • Oil filter — bypass
  • Oil filter — remote
  • Lubricating oil
  • Oil filler
  • Fumes disposal

Mounting System
  • Front and rear engine supports
  • Structural steel base

Power Take-Offs
  • Crankshaft pulleys
  • Crankshaft pulley — stack-on
  • Output flange
  • Flywheel stub shaft
  • Front stub shaft
  • Hydraulic pump drive
  • Hydraulic pumps — front
  • Hydraulic pumps — rear
  • Enclosed Clutch
  • Clutch Support

Protection System
  • Air shutoff
  • Air shutoff switch

Starting System
  • Electric starting motors — 12 Volt, 24 Volt
  • Starting aids
  • Battery sets — 24 Volt, dry
  • Battery cable
  • Battery rack

Transmission Arrangement
  • Transmission cooler