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High Performance Propulsion Engines

Industry-leading technology allows Caterpillar to create the most reliable commercial engines for a variety of applications. From tugs and container vessels to yachts and sport fishers, Cat and MaK engines have demonstrated their efficiency countless times. With remarkable reliability and durability, these engines will exceed your expectations for decades.

C9 ACERT™ High Performance Marine Propulsion Engine

Cat® C9 ACERT Diesel Marine Propulsion Engine, with ratings of 510-575 mhp (503-567 bhp) at 2500 rpm, meets IMO II emission standards.

  • Specification Summary

  • Power Range 503-567 bhp (375-423 bkW)
  • Speed Range 2500 rpm
  • Configuration In-line 6, 4-Stroke-Cycle Diesel
  • Aspiration TA

Product Details

Ratings

Power Range 503-567 bhp (375-423 bkW)

Engine

Speed Range 2500 rpm
Emissions IMO II
Aspiration TA
Bore 112.0 mm
Stroke 149.0 mm
Displacement 8.8 L
Rotation (from flywheel end) Counterclockwise
Configuration In-line 6, 4-Stroke-Cycle Diesel

Dimensions & Weights

Maximum Dry Weight 946.0 kg
Maximum Length 1198 mm
Minimum Height 983.0 mm
Minimum Width 974.0 mm
  • Air Inlet System
    •  Aftercooler (sea water)
    •  Air Cleaner/Fumes Disposal (closed crankcase) - shipped loose
    •  Turbocharger
  • Aftercooler (sea water)
    • Air Cleaner/Fumes Disposal (closed crankcase) - shipped loose
      • Turbocharger
        • Control Panels
          •  Electronic governor
          •  Hydraulic Electronic Unit Injection (HEUI) fuel system
          •  Electronic Control Module (ECM)
          •  Engine mounted 70-pin dedicated customer connector
          •  SAE J1939 data link
        • Electronic governor
          • Hydraulic Electronic Unit Injection (HEUI) fuel system
            • Electronic Control Module (ECM)
              • Engine mounted 70-pin dedicated customer connector
                • SAE J1939 data link
                  • Cooling System
                    •  Thermostat and housing
                    •  Jacket water pump, belt driven, centrifugal
                    •  Auxiliary sea water pump, gear driven
                    •  Expansion tank (heat exchanger engines only)
                    •  Engine mounted heat exchanger, removable tube bundle (for sea water) (heat exchanger engines only)
                    •  Engine oil cooler
                    •  Auxiliary sea water lines
                    •  Transmission oil cooler
                  • Thermostat and housing
                    • Jacket water pump, belt driven, centrifugal
                      • Auxiliary sea water pump, gear driven
                        • Expansion tank (heat exchanger engines only)
                          • Engine mounted heat exchanger, removable tube bundle (for sea water) (heat exchanger engines only)
                            • Engine oil cooler
                              • Auxiliary sea water lines
                                • Transmission oil cooler
                                  • Flywheel & Flywheel Housings
                                    •  Flywheel, SAE No. 1, 113 teeth
                                    •  Flywheel housing, SAE No. 1
                                  • Fuel System
                                    •  Fuel filter, RH service on Port, LH service on starboard
                                    •  Fuel transfer pump
                                    •  Fuel priming pump
                                  • Fuel filter, RH service on Port, LH service on starboard
                                    • Fuel transfer pump
                                      • Fuel priming pump
                                        • Lube System
                                          •  Crankcase breather
                                          •  Oil filter, front center service
                                          •  Oil filler, in valve cover
                                          •  Oil level gauge, RH service on port, LH service on starboard
                                          •  Oil pan
                                          •  Oil pan drain, RH service on port, LH service on starboard
                                          •  Engine oil pump (gear driven)
                                        • Mounting System
                                          •  Front support, adjustable height
                                        • Protection System
                                          •  Overspeed shutoff - electronic
                                        • General
                                          •  Torsional vibration damper and guard
                                          •  Lifting eyes
                                          •  Literature
                                          •  Engine wiring
                                          •  RH or LH service options
                                        • Cooling System
                                          •  Coolant level sensor
                                        • Coolant level sensor
                                          • Exhaust System
                                            •  Exhaust Temp Sensor
                                            •  Watercooled Elbows
                                          • Fuel System
                                            •  Fuel cooler
                                            •  Flexible fuel lines
                                          • Instrumentation
                                            •  OEM Wiring Harness
                                            •  Engine to Engine Harness
                                            •  Wiring Harness
                                            •  Transmission Sensors
                                            •  Marine Power Display System
                                            •  Marine Power Display
                                            •  Marine Power Display Bracket
                                          • Lube System
                                            •  Oil Filler
                                            •  Sump pumps, manual
                                            •  Sump pump lines
                                          • Mounting System
                                            •  Vibration isolators
                                          • Power Take-Offs
                                            •  Crankshaft pulley
                                            •  Damper and Stub Shaft
                                            •  Pulley and Stub Shaft
                                          • Crankshaft pulley
                                            • Damper and Stub Shaft
                                              • Pulley and Stub Shaft
                                                • General
                                                  •  Damper Guard
                                                  •  Belt Guard - Alternator
                                                • Damper Guard
                                                  • Belt Guard - Alternator
                                                    • Packing
                                                      •  Engine Protective Cover
                                                      •  Export Packing
                                                    Built for it