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Utilizing ACERT technology, the new robust C32 ACERT marine engine is designed to optimize durability, reliability, and fuel efficiency. The C32 ACERT marine engine engine offers the latest in Mechanically actuated Electronically controlled Unit Injection (MEUI) fuel system, state-of-the-art A4 Electronic Control Unit (ECU), and optimized turbocharging and aftercooling. These features combine to deliver reduced emission levels, excellent fuel economy levels, and reliable maximum power output. The C32 ACERT engine meets current EPA Tier 2 and IMO emissions regulations. The industry-leading Caterpillar fuel system provides lower specific fuel consumption, particularly at part load, while reducing smoke and emissions.


Intermittent Ratings - Maximum Power 1600.0 bhp 1193.0 bkW Less


Configuration Vee 12, 4-Stroke-Cycle Diesel Vee 12, 4-Stroke-Cycle Diesel Less
Aspiration TTA TTA Less
Rotation (from flywheel end) Counterclockwise Counterclockwise Less
Stroke 6.38 in 162.0 mm Less
Bore 5.71 in 145.0 mm Less
Displacement 1959.0 in3 32.1 L Less

Dimensions & Weights

Minimum Dry Weight 7100.0 lb 3221.0 kg Less
Maximum Dry Weight 7300.0 lb 3311.0 kg Less
Minimum Length 77.8 in 1976.0 mm Less
Maximum Height 59.9 in 1521.0 mm Less
Minimum Width 55.4 in 1408.0 mm Less
Maximum Width 56.8 in 1444.0 mm Less
Minimum Height 54.4 in 1381.0 mm Less
Maximum Length 81.6 in 2072.0 mm Less

Designed for durability and reliability utilizing ACERT™ Technology

The robust C32 ACERT block is designed to provide optimum power for your application without compromising the long, durable life you have come to expect from a Caterpillar heavy duty marine engine

Environmentally friendly

Meets current EPA Tier 2, EU Stage III, and IMO emissions regulations. Provides a solid building block to tackle future emissions challenges.

Improved fuel efficiency

Industry-leading Caterpillar® fuel system expertise provides lower specific fuel consumption, particularly at part load, while reducing smoke and emissions.

Mechanically Actuated Electronically Controlled Unit Injector Fuel System (MEUI)

Provides variable injection timing and duration to optimize combustion at any given speed and load. This proven fuel system technology is the result of more than 20 years of Caterpillar experience and leadership in revolutionary fuel system design

Wide Operating Speed Range (WOSR)

Full power over a wide speed range, Excellent reserve power for acceleration, Ideal for applications requiring the engine to operate normally at more than one speed or load, Provides an alternative to torque converters, multi-speed transmissions, Controllable Pitch Propeller (CPP)

Engine-Mounted Instrument Panel

Integrated marine power display for engine monitoring, quick response, and effective local control

A4 Electronic Control Unit (ECU)

Waterproof connectors, maintenance-free, backup ECU for redundant governing, Caterpillar designed for optimal engine control

C32 ACERT Tier 2 Standard Equipment

Air Inlet System
  • Aftercooler - sea water/separate circuit, corrosion resistant (air side)
  • Air cleaner/fumes disposal (closed system) w/ Service Indicator (shipped Loose)
  • Turbocharger inlet, 152 mm (6 in) OD straight connection
  • Turbocharger, jacket water-cooled turbine hsg

Control System
  • Electronic governing (A4 ECM)
  • Cold mode start strategy
  • Programmable low idle
  • Electronic diagnostics and fault logging
  • Engine and transmission monitoring (speed, temperature, pressure)
  • Fuel/air ratio control
  • Momentary start/stop logic
  • ECM Controlled engine Pre-lub and cranking
  • ECM controlled engine cool-down
  • High Temp braided engine harness with 70pin customer connector and service tool connector

Exhaust System
  • Manifold, watercooled
  • 1800 and 1900hp engine: Twin Turbocharger with watercooled bearings and heat shield 127mm (5in) full marmon connection outlet (13kg Max static wt on connection)
  • 1450, 1600 and 1700 engine: Twin Turbocharger, watercooled hsg 130mm (5.12 in) ID round flanged outlet (13kg Max static wt on connection)

Fuel System
  • Fuel filter, RH service on Port, LH service on Starboard (Fuel connections size: ORFS -10 inlet, ORFS -8 outlet)
  • Fuel transfer pump, Fuel priming pump

  • Graphical Unit (Marine Power Display or Marine Analog Power Display) for Analog or digital display of:
  • Internal Override and control switches
  • 24pin customer connector (for use with remote panel)
  • Local Keyswitch for Power on/off
  • Start/Stop buttons
  • Local stop button
  • Backup ECM ready light
  • Backup ECM active light
  • Overspeed shutdown notification light
  • Remote stop notification light

Lube System
  • Crankcase breather
  • Oil filter, spin-on, RH service on Port, LH service on Starboard
  • Oil pan, center sump
  • Shallow sump pan (250hr oil change interval)
  • Oil filler and Dipstick, RH service on Port, LH service on Starboard
  • Oil pump, gear driven

Mounting System
  • Front support - adjustable

Power Takeoffs
  • Hydraulic pump drive, SAE A, 11 tooth spline, 46 ft-lb max torque, conterclockwise as viewed from front of the engine looking into the drive and turns 1.41 x engine speed, 292 mm crankshaft pulley, 15.88 mm width

Protection System
  • A4 ECU Electronic Monitoring System provides customer programmable engine de-rate strategies to protect against adverse operating conditions
  • Remote Stop push button (Located on Electronic Instrument Panel)

  • Crankshaft Vibration damper
  • Lifting eyes
  • RH or LH service options
  • Literature
  • Single groove v-belt crankshaft pulley - 1800 and 1900 ratings
  • Dual groove v-belt crankshaft pulley - 1450, 1600 and 1700 ratings

Flywheel and Flywheel Housing
  • 1800 and 1900hp engine: Flywheel, SAE No. 0, 136 teeth Flywheel housing, SAE No. 0
  • 1450, 1600 and 1700 engine: Flywheel, SAE No. 1, 113 teeth Flywheel housing, SAE No. 1
  • SAE standard rotation

Cooling System
  • Sea water/Aux pump, gear driven, bronze impeller
  • Sea water/Aux pump, gear driven, rubber impeller
  • Heat exchanger - Titanium plate with integral expansion tank and thermostat hsg (fully open temp 92C) -Integral fuel cooler
  • Coolant recovery system
  • Oil Cooler
  • Jacket water pump, gear driven, centrifugal

C32 ACERT Tier 2 Optional Equipment

Air Inlet Systems
  • Heavy Duty Air Cleaner
  • Remote Air Inlet Adapter

Charging Systems
  • Battery Charger
  • Charging Alternators

Cooling System
  • Marine Gear/Transmission Oil Coolers
  • Sea water Inlet Connections
  • Sea Water Pumps

Exhaust System
  • Exhaust Connection Adapter
  • Dual Elbow
  • Flexible Fitting
  • Dual Muffler
  • Muffler Spark Arresting
  • Flange
  • Exhaust Turbo Cover

Fuel System
  • Water Separator Filters

  • OEM Wiring Harness
  • Engine to Engine Harness
  • Instrument Panels
  • Pilot House Instrument Panels
  • Wiring Harness

Lube System
  • Prelubrication Options
  • Sump Pump

Protection System
  • Marine Classification Society and Solas
  • Fuel and Oil Shielding
  • Backup ECM

Starting System
  • Air Starting Motor
  • Air Start Accessories
  • Electric Starting Motors - Single 24 Volt
  • Starting Aids
  • Battery Sets - 24 Volt - Dry

  • Adapter Kit
  • Guards
  • Filter Cover kit
  • Fumes Disposal Breather
  • Tool Set

  • Engine Protective Cover
  • Export Packing
  • Storage Preservation

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Extended Warranty and Support

Caterpillar offers a variety of integrated solutions to help you protect your investment, minimize owning and operating costs, and maximize up-time.

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