Caterpillar C32B Marine Engine Parts, Spares & Overhaul Kits

Caterpillar C32B Marine Engine Parts & Spares

Alfa Marine Spare Parts supplies Caterpillar C32B marine engine parts and spares for commercial vessels, workboats, yachts, propulsion systems, auxiliary engines and marine power applications.

We source genuine, OEM, replacement and applicable Reman Caterpillar C32B parts, subject to availability, for scheduled maintenance, engine repairs, top-end overhaul and major engine rebuild requirements.

Our sourcing capabilities cover fuel injectors, fuel-system components, cylinder heads, pistons, piston rings, cylinder liners, connecting rods, bearings, turbochargers, aftercooler parts, sea water pumps, jacket-water pumps, heat exchangers, oil pumps, oil coolers, electronic control components, sensors, starters, alternators, gaskets, seals and overhaul parts.

The Caterpillar C32B is a 32.1-litre V12 four-stroke diesel engine developed for demanding marine applications.

For the related engine generation, visit our Caterpillar C32 Marine Engine Parts page.

You can also browse our Caterpillar Marine Engine Parts & Rebuild Kits page.

For correct parts identification, provide the complete engine model, engine serial number, serial-number prefix, arrangement number and existing part number whenever available.

Need a specific Caterpillar C32B component? Request a Quote or email request@alfamarinespareparts.com.

Caterpillar C32B Engine Overview

The Caterpillar C32B is a V12 four-stroke diesel engine designed for commercial and high-performance marine applications.

The engine has a 145 mm cylinder bore and 162 mm piston stroke, producing a displacement of 32.1 litres.

Caterpillar offers different C32B marine configurations depending on application.

Commercial workboat configurations are available across approximately 1,600–2,300 rpm, with applicable ratings from 1,200 to 1,700 bhp (895–1,268 bkW).

High-performance C32B configurations are also available, including sequential-turbocharged versions rated up to 2,400 bhp (1,790 bkW) at 2,300 rpm.

Because the C32B is produced in different ratings and marine configurations, parts should always be identified against the individual engine rather than selected only by the C32B model name.

Caterpillar C32B Technical SpecificationsSpecificationCaterpillar C32BManufacturerCaterpillarEngine modelC32BEngine type4-stroke dieselCylinder configurationV12Number of cylinders12Cylinder bore145 mmPiston stroke162 mmDisplacement32.1 LAspirationTwin or sequential turbocharged and aftercooled, depending on configurationGovernor / controlElectronicCommercial marine speed range1,600–2,300 rpmCommercial propulsion powerApprox. 1,200–1,700 bhpHigh-performance ratingsUp to 2,400 bhp on applicable configurationsRotation from flywheel endCounterclockwiseApplicationsCommercial propulsion, yacht propulsion and marine auxiliaryParts identificationSerial number and arrangement dependent

Exact output, emissions equipment, turbocharger arrangement, cooling system and other specifications vary according to the individual C32B configuration.

Caterpillar C32B Commercial Marine Engine

Caterpillar offers the C32B for demanding commercial workboat applications.

Applicable commercial configurations use:

V12 architecture
32.1-litre displacement
Twin turbocharging and aftercooling
Electronic engine management
Marine cooling systems
Applicable IMO and EPA emissions configurations

The commercial C32B should not automatically be treated as identical to a high-performance C32B yacht engine when selecting parts.

Caterpillar C32B High-Performance Marine Engine

The C32B is also available for high-performance marine and yachting applications.

Applicable versions can use sequential turbocharging, electronic ADEM VI control, sea-water aftercooling and high-output ratings.

High-performance configurations can differ from commercial workboat engines in:

Turbocharger arrangement
Cooling configuration
Fuel-system calibration
Electronic controls
Engine rating
Exhaust equipment
Supporting components

Always provide the complete engine identification when requesting high-performance C32B components.

Caterpillar C32B Parts & Spares

Alfa Marine Spare Parts can assist with a broad selection of Caterpillar C32B parts for routine maintenance, corrective repairs and engine overhaul requirements.

Caterpillar C32B Cylinder & Internal Engine Parts

Internal-engine requirements can include:

Cylinder heads
Cylinder liners
Pistons
Piston rings
Piston pins
Connecting rods
Connecting-rod bushings
Main bearings
Connecting-rod bearings
Thrust bearings
Crankshaft components
Camshaft components
Timing components
Gaskets
O-rings
Seals

Major internal components should always be verified using the complete engine serial number and arrangement.

You can also browse our Marine Spare Parts Catalogue.

Caterpillar C32B Cylinder Head Parts

Cylinder-head requirements can include:

Complete cylinder heads
Intake valves
Exhaust valves
Valve guides
Valve seats
Valve springs
Rocker components
Injector-related components
Cylinder-head gaskets
O-rings
Seals
Fasteners

For top-end overhaul requirements, send the engine serial number together with the required parts list.

Caterpillar C32B Pistons & Cylinder Liners

For C32B overhaul requirements, we can assist with applicable:

Pistons
Piston rings
Piston pins
Cylinder liners
Liner seals
Connecting rods
Main bearings
Connecting-rod bearings
Thrust components
Gaskets
O-rings

Piston, liner and bearing components should be selected according to the individual C32B configuration.

Caterpillar C32B Fuel System Parts

Applicable C32B marine engines use electronically controlled fuel-system technology.

Fuel-system requirements can include:

Fuel injectors
Injector seals
Fuel transfer pumps
Fuel priming components
Primary fuel filters
Secondary fuel filters
Fuel-water separators
Fuel coolers
Fuel lines
Fuel pressure components
Sensors
Wiring and connectors
Fuel-system gaskets

Fuel-system components can differ according to engine rating and production configuration.

Caterpillar C32B Fuel Injectors

For Caterpillar C32B injector requirements, provide:

Engine model: Caterpillar C32B

Engine serial number:

Serial-number prefix:

Arrangement number:

Existing injector part number:

Quantity:

This is particularly important because injector specifications and supersessions can vary between engine configurations.

Caterpillar C32B Turbocharger Parts

Turbocharging is a particularly important area of the C32B because Caterpillar offers different marine turbocharger configurations.

Depending on the engine version, requirements can include:

Complete turbochargers
Applicable Reman turbochargers
Turbocharger cartridges
Compressor components
Turbine components
Bearings
Seals
Water-cooling components
Oil-feed pipes
Oil-return pipes
Exhaust connections
Intake connections
Mounting gaskets

Some C32B marine versions use twin turbocharging, while applicable high-performance versions use sequential turbocharging.

Therefore, never order a C32B turbocharger based only on the engine model.

Provide:

Engine Serial Number + Arrangement Number + Existing Turbocharger NumberCaterpillar C32B Aftercooler Parts

Depending on the C32B configuration, aftercooler requirements can include:

Aftercooler cores
Sea-water aftercooler components
Housings
End covers
Gaskets
O-rings
Seals
Air connections
Cooling connections
Mounting components

The exact aftercooler arrangement should be verified against the engine configuration.

Caterpillar C32B Cooling System Parts

C32B marine cooling-system requirements can include:

Jacket-water pumps
Sea water pumps
Heat exchangers
Sea-water aftercoolers
Oil coolers
Fuel coolers
Thermostats
Expansion tanks
Cooling pipes
Hoses
Pump shafts
Mechanical seals
Bearings
Gaskets
O-rings

Cooling arrangements vary according to the commercial, high-performance or auxiliary engine configuration.

Caterpillar C32B Sea Water Pumps

Caterpillar C32B marine installations can use gear-driven sea-water pumping arrangements.

Depending on the specific engine configuration, requirements can include:

Complete sea water pumps
Pump housings
Pump shafts
Mechanical seals
Bearings
Pump covers
Gaskets
O-rings
Related cooling components

Correct pump identification is particularly important because different C32B installations can use different cooling arrangements.

Provide:

C32B + Engine Serial Number + Existing Pump NumberCaterpillar C32B Heat Exchanger Parts

Applicable C32B marine installations can use heat exchangers as part of the cooling system.

Requirements can include:

Complete heat exchangers
Plate heat exchangers
Heat exchanger cores
End covers
Expansion tanks
Gaskets
O-rings
Seals
Cooling connections
Mounting components

Applicable high-performance C32B configurations use a titanium plate heat exchanger.

The exact heat-exchanger arrangement should always be verified against the individual engine.

Caterpillar C32B Oil Pump & Lubrication Parts

Lubrication-system requirements can include:

Engine oil pumps
Oil filters
Oil coolers
Oil-pressure regulators
Oil-pressure sensors
Oil lines
Oil pans
Crankshaft seals
Gaskets
O-rings

Applicable C32B configurations use a gear-driven engine oil pump.

Caterpillar C32B Electronic Control Parts

Electronic-control requirements can include:

Electronic control modules
Engine sensors
Pressure sensors
Temperature sensors
Speed sensors
Wiring harnesses
Connectors
Alarm components
Monitoring components
Electronic diagnostic components

Applicable current C32B marine configurations use ADEM VI electronic engine control.

Electronic components should always be identified against the complete engine serial number and existing component number.

Caterpillar C32B Crankshaft & Bearing Parts

Crankshaft and bearing requirements can include:

Crankshafts
Main bearings
Connecting-rod bearings
Thrust bearings
Connecting rods
Connecting-rod bushings
Crankshaft seals
Crankshaft gears
Vibration-damper components
Associated hardware

For major crankshaft requirements, provide:

Engine Serial Number + Arrangement Number + Existing Part NumberCaterpillar C32B Camshaft & Timing Parts

Timing-system requirements can include:

Camshafts
Camshaft bearings
Camshaft gears
Timing gears
Gear-train components
Covers
Bushings
Fasteners
Gaskets
Seals

Correct component identification should be based on the complete engine arrangement.

Caterpillar C32B Exhaust System Parts

Applicable marine exhaust requirements can include:

Exhaust manifolds
Water-cooled exhaust components
Turbocharger exhaust connections
Exhaust elbows
Exhaust piping connections
Gaskets
Seals
Clamps
Mounting hardware

Applicable C32B high-performance configurations use water-cooled exhaust manifolds and turbochargers.

Caterpillar C32B Starter & Alternator Parts

Electrical requirements can include:

Starter motors
Starter solenoids
Alternators
Charging-system components
Sensors
Switches
Wiring harnesses
Connectors
Monitoring components

Before ordering electrical parts, verify:

Engine serial number
Existing part number
System voltage
Mounting arrangement
Electrical connection configuration

Caterpillar C32B Gaskets & Seals

Gasket and sealing requirements can include:

Cylinder-head gaskets
Rocker-cover gaskets
Intake gaskets
Exhaust gaskets
Turbocharger gaskets
Oil-pan gaskets
Water-pump gaskets
Crankshaft seals
Oil seals
Liner seals
Injector seals
O-rings

Complete sealing requirements can also be prepared together with associated overhaul components.

Caterpillar C32B Overhaul Parts

For a complete Caterpillar C32B engine overhaul, Alfa Marine Spare Parts can assist with applicable:

Cylinder liners
Pistons
Piston rings
Piston pins
Cylinder heads
Intake valves
Exhaust valves
Connecting rods
Main bearings
Connecting-rod bearings
Thrust bearings
Crankshaft components
Camshaft components
Fuel injectors
Turbocharger components
Cooling-system parts
Oil pumps
Oil cooler components
Gaskets
O-rings
Seals

For major overhaul enquiries, send the complete engine identification together with your required parts list.

Caterpillar C32B Top-End Overhaul Parts

Top-end overhaul requirements can include:

Cylinder heads
Intake valves
Exhaust valves
Valve guides
Valve seats
Valve springs
Rocker components
Fuel injectors
Injector seals
Cylinder-head gaskets
O-rings
Seals

The final overhaul scope should be determined according to engine condition, operating history and inspection results.

Caterpillar C32B Reman Parts

Applicable Caterpillar Reman components may be available for selected C32B requirements.

Depending on the engine serial number and component, options can include selected:

Fuel-system components
Turbochargers
Starters
Alternators
Pumps
Major engine components

Reman compatibility should always be checked against:

C32B + Engine Serial Number + Existing Part NumberCaterpillar C32B Marine Applications

Caterpillar currently offers C32B configurations across several marine sectors.

Applications include:

Commercial workboats
Tugboats
Fishing vessels
Utility vessels
Commercial propulsion
High-performance vessels
Yachts
Marine auxiliary engines
Marine generator applications

The commercial workboat C32B and high-performance C32B should not automatically be treated as identical configurations when selecting replacement parts.

Caterpillar C32 vs C32B

The Caterpillar C32 and C32B are related but distinct engine generations.

Both belong to Caterpillar's large V12 engine platform, but differences can exist in:

Electronic engine controls
Fuel-system components
Turbocharger arrangements
Cooling systems
Emissions equipment
Sensors
Wiring
Engine ratings
Supporting components

Parts should therefore not automatically be considered interchangeable.

For the earlier engine platform, visit our Caterpillar C32 Marine Engine Parts page.

Caterpillar C32B Twin Turbo vs Sequential Turbo

Caterpillar offers different C32B marine turbocharging configurations.

C32B Twin Turbo configurations are available for applicable commercial and high-performance applications.

C32B Sequential Turbo configurations are available for applicable high-performance/yachting applications.

The sequential-turbo C32B can reach ratings up to approximately 2,400 bhp (1,790 bkW) at 2,300 rpm.

Because the turbocharger systems differ, turbochargers and associated intake, exhaust and cooling components should be identified using the complete engine serial number and arrangement.

Caterpillar C32B Parts Identification

Correct identification is particularly important for the C32B because Caterpillar offers multiple marine configurations and ratings.

When requesting parts, provide:

Engine model: Caterpillar C32B

Engine serial number:

Serial-number prefix:

Arrangement number:

Existing part number:

Part description:

Quantity:

For turbochargers, pumps, injectors, electronic modules, starters and alternators, clear photographs of the existing component can also assist with identification.

The preferred identification sequence is:

Caterpillar C32B + Engine Serial Number + Arrangement Number + Existing Part NumberWhy Source Caterpillar C32B Parts From Alfa Marine Spare Parts?

Alfa Marine Spare Parts supports shipowners, yacht operators, ship managers, shipyards, marine engineers, purchasing departments, repair companies and engine rebuilders with Caterpillar C32B parts and spares.

Depending on availability, we can assist with:

Scheduled maintenance parts
Fuel injectors
Fuel-system components
Electronic-control parts
Cylinder components
Internal-engine parts
Turbocharger components
Aftercooler parts
Cooling-system components
Sea water pumps
Heat exchanger parts
Lubrication-system components
Electrical components
Top-end overhaul parts
Complete overhaul requirements
Genuine parts
OEM parts
Replacement parts
Applicable Reman parts

For the related engine generation, visit our Caterpillar C32 Marine Engine Parts page.

You can also browse our Caterpillar Marine Engine Parts & Rebuild Kits, Caterpillar Engine Parts Catalogue and Marine Spare Parts Catalogue.

Alfa Marine Spare Parts is an independent marine spare-parts supplier and is not an official Caterpillar dealer.

Frequently Asked QuestionsIs the Caterpillar C32B a Marine Engine?

Yes. Caterpillar currently offers the C32B for commercial propulsion, high-performance/yachting and marine auxiliary applications.

Is the Caterpillar C32B a V12?

Yes. The C32B is a 12-cylinder V-configuration four-stroke diesel engine.

What Is the Caterpillar C32B Displacement?

The C32B has a displacement of 32.1 litres.

What Are the C32B Bore and Stroke?

The C32B uses a 145 mm bore and 162 mm stroke.

How Much Power Does the Caterpillar C32B Produce?

It depends on the marine configuration.

Current commercial workboat versions cover approximately 1,200–1,700 bhp, while applicable high-performance sequential-turbo versions are available up to approximately 2,400 bhp.

Is the C32B the Same as the C32?

No.

The engines are related, but the C32B represents a different generation with changes to engine controls, fuel systems, turbocharging, emissions equipment and other components depending on configuration.

Does the C32B Use Electronic Engine Control?

Yes. Applicable current marine C32B configurations use ADEM VI electronic control.

Does the Caterpillar C32B Use Twin Turbochargers?

Applicable C32B configurations use twin turbocharging, while Caterpillar also offers high-performance sequential-turbocharged C32B configurations.

Can You Supply Caterpillar C32B Fuel Injectors?

Yes. We can assist with applicable genuine, OEM, replacement and Reman fuel-system requirements, subject to correct identification and availability.

Can You Supply Caterpillar C32B Sea Water Pumps?

Yes. We can assist with applicable C32B sea water pumps and related cooling-system components.

Provide the engine serial number and existing pump number whenever available.

Can You Supply Caterpillar C32B Turbochargers?

Yes. We can assist with applicable C32B turbochargers and associated components.

Because different C32B turbocharger arrangements exist, provide the complete engine serial number and existing turbocharger number.

Can You Supply Caterpillar C32B Overhaul Parts?

Yes. Depending on availability, we can assist with pistons, liners, rings, bearings, cylinder-head components, fuel injectors, turbocharger components, cooling-system parts, gaskets, seals and other overhaul requirements.

Related Caterpillar Engine Pages

Caterpillar C32 Marine Engine Parts

Caterpillar C18 Marine Engine Parts

Caterpillar 3412 Marine Engine Parts

Caterpillar 3512 Marine Engine Parts

Caterpillar 3516 Marine Engine Parts

Caterpillar Marine Engine Parts & Rebuild Kits

Caterpillar Engine Parts Catalogue

Marine Spare Parts Catalogue

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