IMO II/EPA Tier 3 Compliant Ratings

Separate Circuit Aftercooling System (SCAC) for A-C ratings

No seawater circulating through the aftercooling system to prevent corrosion.

Seven Ratings with Wide Operating Speed Range (WOSR)

Full power & torque are available for a broader operating speed range. For example: With an A rating at 1800 rpm - you have full power from 1500 to 1800 rpm.

Extended Oil Change Intervals

A Ratings: 1000 hours, B Ratings: 750 hours, C Ratings: 500 hours

The Cat Global Dealer Network

Extensive service network of CAT dealers as well as unparalleled service from certified authorized marine dealers.


Proven engine operating history: performance iron with thousands of hours of validation testing for quality and durability


Backed by Caterpillar's standard warranty

The C32 ACERT marine propulsion engine is available at ratings that meet both EPA Tier 3 and IMO II emissions regulations. It has a separate circuit aftercooling system (SCAC) for A through C ratings and a seawater aftercooling system (SWAC) for D and E ratings. The C32 ACERT has seven ratings with Wide Operating Speed Range (WOSR) and extended oil change intervals. Other benefits include proven engine operating history and performance iron with thousands of validation testing hours for quality and durability. The C32 ACERT marine engine is supported by the extensive Cat global dealer network and standard warranty.

Compare Models
Power Rating
expand / collapse icon
Power Range 750-1800 bhp (559-1342 bkW) 750-1800 bhp (559-1342 bkW)

C32 ACERT Tier 3 Standard Equipment

expand / collapse icon
  • Separate Circuit After-Cooled (SCAC)
  • Seawater After-Cooling (SWAC) System
  • Air cleaner
  • Turbochargers, jacket water cooled
  • Turbochargers inlet, 152 mm (6 in) OD straight connection

C32 ACERT Tier 3 Optional Equipment

Air Inlet Systems
expand / collapse icon
  • Air Inlet Cleaner
  • Air Inlet Adapter