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With the introduction of the C32B product line in 2021, Caterpillar Marine now confirms the availability of the uprated Cat® C32B Marine Propulsion engine in 2025 mhp and 2433 mhp offerings. With 25% more peak power and high performance, this engine demonstrates great performance and efficiency, while also delivering noise reduction at lower engine speeds. This product meets IMO II and U.S. EPA Tier 3 (recreational) emissions standards and is perfectly suited for yachting applications. Governmental applications can also be a great fit for D-tier ratings. Please consult with your Cat Marine dealer regarding the use of E-tier ratings.

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Power Range1800-2400 bhp (1342-1790 bkW)

Speed Range2300 rpm

EmissionsIMO II/III, U.S. EPA Tier 3 (recreational), RCD, China II

AspirationSequential Turbocharged - aftercooled




Rotation from Flywheel EndCounterclockwise

ConfigurationVEE 12, 4-Stroke Cycle diesel

Flywheel HousingSAE No. O

CoolingSWAC (Seawater Aftercooler)

GovernorElectronic (ADEM VI)

Oil Change Interval250 hrs

Refill CapacityLube Oil System w/ oil filter change: 76 L (20 gal)

Dry Weight7736lb





ADEM VI Electronic Control Module

Air Cleaner / Closed Crankcase Ventilation

Front and Rear Seawater Pumps

Sea Water Aftercooler

Titanium Plate Heat Exchanger

Gear-driven JW and SW pumps

Water-cooled Exhaust Manifolds and Turbochargers

MEUI-C Fuel System

250-hr Oil Pan (Shallow Sump)

RH or LH Service Side Options


120V or 240V Jacket Water Heater

SAE A or B PTO (RH rear)

75A, 105A or 175A Alternator

Heat Shielding

Cosmetic Engine Cover

Electric Fuel Priming Pump

Duplex Lube Oil and Fuel Filters

Deep Sump Oil Pan

Marine Alarm & Protection



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