C9 ACERTNon-Current
C9 ACERT
Overview
Cat® C9 ACERT Diesel Marine Propulsion Engine, with ratings of 510-575 mhp (503-567 bhp) at 2500 rpm, meets IMO II emission standards.
Specifications
Units:
| Power Range | 503-567 bhp (375-423 bkW) |
| Speed Range | 2500 rpm |
| Emissions | IMO II |
Benefits & Features
C9 ACERT Features & Benefits
IMO compliant, Caterpillar standard warranty. no visible white or black smoke, parts & service support from worldwide dealer organization, Increased power with ACERT technology
January 30, 2026
Specifications
Units:
| Power Range | 503-567 bhp (375-423 bkW) |
| Speed Range | 2500 rpm |
| Emissions | IMO II |
| Aspiration | TA |
| Bore | — |
| Stroke | — |
| Displacement | — |
| Rotation from Flywheel End | Counterclockwise |
| Configuration | In-line 6, 4-Stroke-Cycle Diesel |
| Length | — |
| Width - Engine | — |
| Approximate Engine Dry Weight | — |
| Height | — |
Benefits & Features
C9 ACERT Features & Benefits
IMO compliant, Caterpillar standard warranty. no visible white or black smoke, parts & service support from worldwide dealer organization, Increased power with ACERT technology
Data not available.
Standard Equipment
- Air Inlet System
- 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
- 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
- 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
- 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
Optional Equipment
- Cooling System
- 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
- General
- Damper Guard
- Belt Guard - Alternator
- Packing
- Engine Protective Cover
- Export Packing