C15 ACERT™ (Water-Cooled Mainfold)



Cat C15 ACERT engines are the ideal solution for your demanding operations in the oilfield. Decades of field operation and intense research and development allow Cat C15 ACERT engines to deliver excellent performance with low operating costs and emissions. Applications powered by C15 ACERT engines include workover rigs, pump skids, nitrogen units, acidizing units, cementing units units, blenders, 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. C15 ACERT water-cooled manifold engines, with ratings: 400-403 bkW (536-540 bhp) @ 1800-2000 rpm meet IMO Tier II, U.S. EPA Marine Tier 3 emissions standards. They are available using U.S. EPA and EU Flexibility, and for other regulated and non-regulated areas.

General Specifications

Minimum Rating 536.0 bhp 400.0 bkW Less
Maximum Rating 540.0 bhp 403.0 bkW Less
Aspiration Turbocharged-Aftercooled Turbocharged-Aftercooled Less
Displacement 928.0 in3 15.2 L Less
Flywheel and Flywheel Housing SAE No. 1 SAE No. 1 Less
Flywheel Teeth 113 (SAE 1) 113 (SAE 1) Less
Stroke 6.7 in. 171.0 mm Less
Bore 5.4 in 137.0 mm Less


Emissions IMO Tier II Certified, Marine Tier 2 Certified, Marine Tier 3 Capable IMO Tier II Certified, Marine Tier 2 Certified, Marine Tier 3 Capable Less


Length 80.18 in. 2036.6 mm Less
Width 41.35 in. 1050.4 mm Less
Height 55.65 in. 1413.6 mm Less
Weight 3730.0 lb 1692.0 kg Less

Improving Workforce Efficiency

• Standard water-cooled manifolds reduce skin temperature by up to 500°C when compared to standard dry manifold • Air inlet shutoff enables emergency shutoff • Spark arresting muffler option decreases risk of fire • Industry-standard ADEM A4 control system improves operator interface

Making Your Investment Work Harder

• SCAC and REMAC cooling options increase flexibility and ease of installation • Optimized for demanding well service applications • - Workover, pumping, cementing, blending, and acidizing • Maintains high power over broad range of operating speeds, improving performance • Steady torque rise provides superior load acceptance • Optimized ambient and altitude capabilities for operating flexibility

Committed to Sustainable Development

Meets today’s emissions requirements for well service applications • - IMO Tier II, Marine Tier 2, Marine Tier 3 capable

Driving Down Total Cost of Ownership

• World-class reliability and durability • Improved serviceability versus the competition • Industry-leading component overhaul life • Rugged Caterpillar testing on all components improves uptime

Advanced Digital Engine Management

ADEM A4 control system providing integrated ignition, speed governing, protection, and controls, including detonationsensitive variable ignition timing. ADEM A4 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. • - C15 ACERT™ Cat optimized transmission matches: TH35-E81, CX31-P600, CX35-P800 • Hazardous Location Certification of the Cat transmission is currently the responsibility of the OEM/packager

Product Support Offered Through Global Cat Dealer Network

• More than 2,200 dealer outlets • Caterpillar factory-trained dealer technicians service every aspect of your petroleum engine • Caterpillar parts and labor warranty Preventive maintenance agreements available for repairbefore-failure options

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

C15 ACERT™ (Water-Cooled Mainfold) Standard Equipment

Air Inlet System
  • Remote-mounted aftercooler with shutoff, 90° turbo inlet connection, 101.6 mm (4") hose connection with shutoff; separate circuit aftercooler with straight turbo inlet connection, 127 mm (5") 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 and protection system (speeds, temperature, pressure), J1939 broadcast (diagnostic, engine status and control)

Cooling System
  • Thermostat and housing — outlet vertical; jacket water pump — gear-driven, centrifugal; RH front water pump inlet

Exhaust System
  • Right rear turbo exhaust, watercooled turbine housing, carbon steel exhaust manifold — wet

Flywheels and Flywheel Housing
  • SAE 1 flywheel housing standard, see price list for flywheel options

Fuel System
  • Electronic unit injector; fuel priming pump — upward angled; engine-mounted secondary fuel filter, front-mounted fuel transfer pump — LH front; fuel sample valve — mounted on fuel filter base

Lube System
  • Oil cooler; RH oil filter; rear sump 38 L oil pan; valve cover oil fill, optional front oil fill; oil gauges standard with LH and RH access; oil valve sampling on oil filter base; remote-mount oil filter kit

Mounting System
  • Front support with mounting provision for LH or RH alternators

Power Take-Off
  • SAE B options for SCAC and REMAC: single cylinder ATEX air compressor; dual cylinder air compressor, SAE B drive adapter; SAE A drive for REMAC

Front Engine Accessory Drive
  • 3 v-groove standard — optional 4 and 5 groove 203.2 mm (8.0") diameter crankshaft, 17.5 mm (11/16") v-belt; optional v-belt or 8-groove accessory drive for 240.39 mm (9.46") diameter pulley; LH and RH mounting poly v-belt; CSA 24V 65 amp alternator — LH and RH mounting poly v-belt; variable fan heights and ratios with 3 and 4 groove fan drives (see Price List)

  • Vibration damper, lifting eyes, automatic variable timing — electronic, electronic installation kit 70-pin connector (connectors, pins, sockets), literature GP Owner & Operator, paint

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