Caterpillar 3512B Marine Engine Parts & Overhaul Kits
Caterpillar 3512B
Caterpillar 3512B Marine Engine Parts & Components
Alfa Marine Spare Parts supplies Caterpillar 3512B marine engine parts and components for commercial vessels, marine propulsion systems, auxiliary engines, generator sets and other heavy-duty applications.
We source genuine, Caterpillar Reman, OEM and replacement Caterpillar 3512B components for scheduled maintenance, engine repairs and complete overhaul requirements.
Our sourcing capabilities cover pistons, cylinder liners, cylinder heads, bearings, fuel-system components, injectors, turbochargers, aftercooler parts, cooling-system components, water pumps, lubrication-system parts, filters, sensors, electrical components, gaskets, seals and other Caterpillar 3512B engine requirements.
The Caterpillar 3512B belongs to the wider Caterpillar 3500 Series and is a later generation of the V12 Caterpillar 3512 platform.
For information about the wider engine platform, visit Caterpillar 3512 Marine Engine Parts.
For additional Caterpillar engine models and component categories, browse Caterpillar Marine Engine Parts.
For correct parts identification, provide the complete engine model, complete serial number, serial-number prefix, arrangement number and existing part number whenever available.
Need a specific Caterpillar 3512B component or complete overhaul requirement? Request a Quote or email request@alfamarinespareparts.com.
Caterpillar 3512B Engine Overview
The Caterpillar 3512B is a twelve-cylinder V-type four-stroke diesel engine belonging to Caterpillar's 3500 engine family.
The engine uses a 170 mm cylinder bore and 190 mm piston stroke, providing a displacement of approximately 51.8 litres.
The Caterpillar 3512B can be encountered in demanding marine propulsion, auxiliary, generator and other heavy-duty applications depending on the individual engine configuration.
Applicable configurations use turbocharging and aftercooling.
The 3512B shares the wider architecture of the Caterpillar 3512 platform but should not automatically be treated as identical to earlier or later 3512 generations for parts selection.
Individual Caterpillar 3512B engines can differ according to:
- Engine serial-number prefix
- Engine arrangement
- Power rating
- Rated speed
- Duty cycle
- Application
- Fuel-system configuration
- Turbocharger arrangement
- Cooling-system arrangement
- Control-system specification
- Emissions configuration
- Accessory equipment
- Production revision
For this reason, a request stating only “Caterpillar 3512B parts” may not provide enough information to identify the correct component.
Always provide the complete engine serial number and arrangement number whenever possible.
For information about the wider V12 engine platform, visit Caterpillar 3512 Marine Engine Parts.
Caterpillar 3512B Technical Specifications
General specifications associated with the Caterpillar 3512B platform include:
SpecificationCaterpillar 3512BEngine type4-stroke dieselCylinder configurationV12Number of cylinders12Cylinder bore170 mmPiston stroke190 mmDisplacementApprox. 51.8 litresAspirationTurbocharged and aftercooled on applicable configurationsFuelDieselCoolingLiquid cooledEngine familyCaterpillar 3500 SeriesEngine generation3512BApplicationsMarine propulsion, auxiliary, generator and heavy-duty applications
Exact power output, rated speed, dimensions, weight, emissions specification and installed equipment depend on the individual 3512B rating and arrangement.
Always verify the exact engine configuration before selecting replacement components.
Caterpillar 3512B Engine Parts & Components
Alfa Marine Spare Parts can source a broad selection of Caterpillar 3512B engine components for routine maintenance, corrective repairs and complete engine overhaul work.
Requirements can range from individual filters, sensors, gaskets and seals to injectors, pumps, turbochargers, cylinder heads, pistons, liners, bearings and complete overhaul packages.
Major component categories include:
- Cylinder and internal engine components
- Pistons and cylinder liners
- Cylinder heads
- Fuel-system components
- Fuel injectors
- Turbocharger components
- Aftercooler and air-system components
- Cooling-system components
- Water pumps
- Lubrication-system components
- Oil pumps
- Filters
- Exhaust-system components
- Electrical components
- Sensors and controls
- Gaskets and seals
- Overhaul components
Individual components should always be checked against the complete engine identification before ordering.
For related V12 engine information, visit Caterpillar 3512 Marine Engine Parts.
Caterpillar 3512B Cylinder & Internal Engine Parts
Internal engine components operate under substantial mechanical and thermal loading.
We can assist with:
- Pistons
- Piston ring sets
- Piston pins
- Connecting rods
- Connecting rod bearings
- Main bearings
- Cylinder liners
- Cylinder liner seals
- Crankshaft components
- Camshaft components
- Tappets
- Bushings
- Thrust components
- Timing components
- Internal seals
- O-rings
Major internal components should always be identified against the individual engine arrangement.
Do not assume that a component from the original 3512, a 3512C, or another Caterpillar 3500 engine is automatically interchangeable with a 3512B.
Caterpillar 3512B Pistons & Cylinder Liners
Pistons, piston rings and cylinder liners are major components inspected during scheduled engine overhaul work.
Requirements can include:
- Complete pistons
- Piston ring sets
- Piston pins
- Piston retainers
- Cylinder liners
- Cylinder liner seals
- Liner O-rings
- Connecting rod components
- Connecting rod bearings
- Associated gaskets and seals
For a complete twelve-cylinder overhaul requirement, provide the engine serial number, arrangement number and required quantities.
This allows the complete cylinder requirement to be checked against the applicable 3512B engine configuration.
Caterpillar 3512B Cylinder Head Parts
Cylinder heads and valve-train components can require repair or replacement during top-end maintenance and major engine overhaul work.
We can assist with:
- Complete cylinder heads
- Inlet valves
- Exhaust valves
- Valve guides
- Valve seats
- Valve springs
- Rocker arms
- Rocker components
- Valve bridges
- Push rods
- Cylinder head gaskets
- Seals
- O-rings
Cylinder-head assemblies and internal components can vary according to the engine arrangement.
Always provide the existing cylinder-head reference whenever available.
Caterpillar 3512B Fuel System Parts
Correct fuel delivery is essential for reliable combustion and engine performance.
Depending on the individual Caterpillar 3512B arrangement, fuel-system requirements can include:
- Fuel injectors
- Fuel injection components
- Fuel transfer pumps
- Fuel priming components
- Fuel filters
- Fuel filter bases
- Fuel lines
- Fuel manifolds
- Fuel pressure components
- Fuel pressure sensors
- Fuel fittings
- Seals
- O-rings
Fuel-system components can differ between Caterpillar 3512 generations.
When requesting a component, provide:
Caterpillar 3512B + complete serial number + serial-number prefix + arrangement number + existing part number
Need help identifying a fuel-system component? Request a Quote.
Caterpillar 3512B Fuel Injectors
Fuel injectors should be identified using the individual engine serial number and arrangement.
Depending on availability, we can assist with:
- Genuine Caterpillar injectors
- Caterpillar Reman injectors
- OEM injectors
- Replacement injectors
- Injector seals
- Injector O-rings
- Related installation components
Do not assume that an injector used on the original Caterpillar 3512 or another 3512 generation is interchangeable with the 3512B.
Provide the existing injector part number whenever available.
Caterpillar 3512B Turbocharger Parts
Applicable Caterpillar 3512B configurations use turbocharging and aftercooling as part of the engine air system.
Depending on the individual engine arrangement, we can assist with:
- Complete turbochargers
- Caterpillar Reman turbochargers
- Turbocharger cartridges
- Turbine components
- Compressor components
- Bearings
- Seals
- Oil supply components
- Oil drain components
- Turbocharger gaskets
- Air connections
- Exhaust connections
- Mounting components
Turbocharger references can vary according to engine rating and application.
Always provide the existing turbocharger part number or identification information whenever available.
Caterpillar 3512B Aftercooler & Air System Parts
The engine air system works together with the turbochargers and aftercooling system to supply combustion air.
Requirements can include:
- Aftercooler cores
- Aftercooler housings
- Intake manifolds
- Intake pipes
- Air hoses
- Air filters
- Turbocharger connections
- Clamps
- Gaskets
- Seals
- O-rings
The exact aftercooler and intake-air arrangement should be matched to the individual engine.
Caterpillar 3512B Cooling System Parts
The cooling system maintains correct engine operating temperatures during continuous and high-load operation.
Depending on the individual 3512B configuration, we can assist with:
- Jacket-water pumps
- Auxiliary cooling pumps
- Sea water pumps on applicable marine installations
- Water pump components
- Thermostats
- Thermostat housings
- Heat exchanger components
- Aftercooler components
- Oil cooler components
- Coolant pipes
- Cooling hoses
- Temperature sensors
- Gaskets
- Seals
- O-rings
Cooling-system arrangements can vary between marine propulsion, auxiliary and generator applications.
Always state the engine application when requesting cooling-system components.
Caterpillar 3512B Water Pumps
Different Caterpillar 3512B configurations can use different water pump assemblies.
Depending on the installation, requirements can include:
- Jacket-water pumps
- Auxiliary water pumps
- Sea water pumps
- Aftercooler circuit pumps
- Water pump housings
- Impellers
- Pump shafts
- Bearings
- Mechanical seals
- Drive components
- Gaskets
- O-rings
Do not assume that a water pump used on the original Caterpillar 3512 automatically fits a 3512B.
Even two Caterpillar 3512B engines can use different pump references depending on their individual engine arrangements.
For accurate identification, provide:
Engine model + complete serial number + serial-number prefix + arrangement number + existing pump part number
If the existing pump reference cannot be identified, send photographs of the pump and engine identification plate.
Need assistance finding the correct pump? Request a Quote.
Caterpillar 3512B Lubrication System Parts
Correct lubrication protects crankshaft components, bearings, pistons, camshafts, turbochargers and other moving engine components.
Requirements can include:
- Engine oil pumps
- Oil filters
- Oil filter bases
- Oil coolers
- Oil cooler cores
- Oil pressure regulators
- Oil pressure sensors
- Oil lines
- Oil pipes
- Oil sump components
- Breather components
- Gaskets
- Seals
- O-rings
Oil-system components should always be verified against the exact engine arrangement.
Caterpillar 3512B Filters & Maintenance Components
Routine service requirements can include:
- Engine oil filters
- Fuel filters
- Fuel/water separator elements
- Air filters
- Crankcase ventilation components
- Belts
- Thermostats
- Gaskets
- O-rings
- Sealing washers
- Maintenance kits
- Service components
Filter and maintenance-kit references should be selected using the individual engine serial number and existing component references whenever possible.
Caterpillar 3512B Exhaust System Parts
Exhaust-system components operate under substantial thermal loads and can require inspection or replacement during scheduled maintenance.
Requirements can include:
- Exhaust manifolds
- Exhaust manifold sections
- Exhaust elbows
- Bellows
- Turbocharger exhaust connections
- Exhaust gaskets
- Clamps
- Heat-shielding components
- Seals
- Mounting components
Marine exhaust installations can also contain vessel-specific equipment beyond the base engine.
Caterpillar 3512B Electrical Parts, Controls & Sensors
Electrical and engine-control equipment can vary according to the individual Caterpillar 3512B configuration.
Depending on the engine arrangement, requirements can include:
- Starter motors
- Alternators
- Wiring harnesses
- Electronic control components
- Engine control modules
- Temperature sensors
- Pressure sensors
- Speed sensors
- Position sensors
- Level sensors
- Switches
- Relays
- Solenoids
- Electrical connectors
- Engine monitoring components
Electronic components should always be matched using the complete engine identification.
Sensors, harnesses and control components from another 3512 generation should not automatically be treated as compatible.
Caterpillar 3512B Gaskets & Seals
Gaskets and sealing components are required throughout the engine during maintenance, repairs and overhaul work.
Requirements can include:
- Cylinder head gaskets
- Rocker cover gaskets
- Intake manifold gaskets
- Exhaust manifold gaskets
- Turbocharger gaskets
- Water pump gaskets
- Oil cooler seals
- Injector seals
- Cylinder liner seals
- Front crankshaft seals
- Rear crankshaft seals
- O-rings
- Complete gasket sets
Complete gasket requirements should be matched to the individual 3512B engine arrangement.
Caterpillar 3512B Overhaul Parts
Alfa Marine Spare Parts can assist with individual components and complete Caterpillar 3512B overhaul parts requirements.
A major overhaul requirement can include:
- Pistons
- Piston ring sets
- Cylinder liners
- Liner seal kits
- Piston pins
- Connecting rods
- Main bearings
- Connecting rod bearings
- Thrust components
- Cylinder heads
- Valve components
- Fuel injectors
- Complete gasket sets
- Crankshaft seals
- Oil pump components
- Water pump components
- Turbochargers
- Aftercooler components
For a complete overhaul enquiry, send:
Caterpillar 3512B + complete engine serial number + arrangement number + complete required parts list
Providing the complete requirement allows related components and quantities to be reviewed together before quotation.
Submit your requirement through our Request a Quote page.
Caterpillar 3512B Marine Applications
Depending on engine rating and configuration, Caterpillar 3512B engines can be encountered in demanding marine applications.
Applications can include:
- Commercial vessels
- Workboats
- Tugboats
- Offshore vessels
- Fishing vessels
- Ferries
- Service vessels
- Marine propulsion systems
- Auxiliary installations
- Marine generator applications
The exact engine equipment depends on the vessel, duty profile and individual engine arrangement.
A component from a propulsion engine should not automatically be assumed to fit an auxiliary or generator configuration.
Caterpillar 3512B Auxiliary & Generator Applications
The Caterpillar 3512B platform can also be encountered in auxiliary and power-generation applications.
Depending on the installation, applications can include:
- Marine generator sets
- Auxiliary power systems
- Diesel-electric installations
- Onboard electrical-generation systems
- Offshore power systems
- Heavy-duty generator installations
Generator configurations can use different accessories, cooling-system components and control equipment from propulsion engines.
Always state the application when requesting components.
Caterpillar 3512B Parts Identification
Correct identification is essential when sourcing Caterpillar 3512B engine parts.
The general engine model alone may not provide enough information to identify the correct component.
For accurate identification, provide:
Engine model: Caterpillar 3512B
Complete engine serial number:
Serial-number prefix:
Arrangement number:
Existing part number:
Part description:
Quantity:
Application: Propulsion / Auxiliary / Generator
Required condition:
Delivery destination:
Photographs of the engine identification plate and existing component can also assist with identification.
This information is particularly important for:
- Fuel injectors
- Turbochargers
- Water pumps
- Oil pumps
- Cylinder heads
- Pistons
- Cylinder liners
- Sensors
- Electronic components
- Gasket kits
- Overhaul components
Send your information through our Request a Quote page or email request@alfamarinespareparts.com.
Caterpillar 3512 vs 3512B
The Caterpillar 3512 and 3512B belong to the same wider V12 Caterpillar 3500 engine family, but they represent different engine generations.
They should not automatically be treated as identical for parts selection.
Differences can exist in:
- Fuel-system components
- Fuel injectors
- Engine controls
- Sensors
- Turbocharger arrangements
- Cooling-system components
- Electrical equipment
- Engine ratings
- Accessory arrangements
A component listed for an earlier Caterpillar 3512 should therefore not automatically be assumed to fit a 3512B.
For information about the wider V12 platform, visit Caterpillar 3512 Marine Engine Parts.
Always verify the complete engine model, serial number, serial-number prefix and arrangement number.
Caterpillar 3512B vs 3512C
The Caterpillar 3512B and 3512C represent different generations within the Caterpillar 3512 engine platform.
Although they share the wider V12 3500 Series architecture, individual components can differ.
Important areas can include:
- Fuel injectors
- Fuel-system components
- Engine controls
- Sensors
- Turbochargers
- Cooling-system components
- Electrical systems
- Emissions-related equipment
- Engine ratings
- Accessory arrangements
A Caterpillar 3512C component should therefore not automatically be treated as a replacement for a 3512B component.
Always identify components using the complete engine designation and serial number.
Caterpillar 3512B & the Caterpillar 3512 Engine Family
The Caterpillar 3512B belongs to the wider Caterpillar 3512 V12 engine platform.
The family includes different generations and configurations.
For information about the main engine platform, technical background and available component categories, visit Caterpillar 3512 Marine Engine Parts.
Related generations include:
- Caterpillar 3512
- Caterpillar 3512B
- Caterpillar 3512C
- Caterpillar 3512E
These engines belong to the same wider 3512 family but should not be considered identical for parts selection.
Fuel systems, electronic controls, sensors, turbochargers, cooling components and internal engine parts can differ according to generation and arrangement.
Caterpillar 3512B & the Caterpillar 3500 Series
The Caterpillar 3512B also belongs to the wider Caterpillar 3500 Series.
The principal engine configurations within the family include:
- Caterpillar 3508 — V8
- Caterpillar 3512 — V12
- Caterpillar 3516 — V16
Related engine generations include:
- Caterpillar 3508
- Caterpillar 3508B
- Caterpillar 3508C
- Caterpillar 3512
- Caterpillar 3512B
- Caterpillar 3512C
- Caterpillar 3512E
- Caterpillar 3516
- Caterpillar 3516B
- Caterpillar 3516C
- Caterpillar 3516E
These engines share elements of the wider Caterpillar 3500 architecture but should not be treated as interchangeable for parts selection.
For the V12 platform, visit Caterpillar 3512 Marine Engine Parts.
For additional Caterpillar engines and component categories, browse Caterpillar Marine Engine Parts.
Genuine, Caterpillar Reman, OEM & Replacement 3512B Parts
Depending on the individual component and availability, Caterpillar 3512B requirements can be sourced in different supply conditions.
Options can include:
New genuine Caterpillar
Caterpillar Reman
OEM
Replacement / aftermarket
Not every component is available in every supply condition.
If a particular supply option is mandatory, state this clearly in your enquiry.
For example:
Genuine Caterpillar required
or:
Caterpillar Reman acceptable
Where an applicable Caterpillar Reman reference exists, it should be verified against the corresponding new part number and individual engine arrangement.
Worldwide Supply of Caterpillar 3512B Parts
Alfa Marine Spare Parts supplies and sources Caterpillar 3512B marine engine components for customers worldwide.
We support:
- Shipowners
- Vessel operators
- Fleet managers
- Marine engineers
- Shipyards
- Repair workshops
- Engine rebuilders
- Generator specialists
- Offshore operators
Requirements can range from individual filters, sensors and seals to injectors, pumps, turbochargers, cylinder heads, pistons, liners and complete overhaul packages.
For international enquiries, include your delivery city, country and port.
For additional Caterpillar engines and components, browse Caterpillar Marine Engine Parts.
Why Choose Alfa Marine Spare Parts for Caterpillar 3512B Components?
Correct parts identification is important when sourcing Caterpillar 3512B components because individual engine arrangements can use different parts.
An incorrect injector, turbocharger, pump, piston, liner, sensor or gasket set can create unnecessary delays during maintenance or overhaul work.
Alfa Marine Spare Parts can assist with:
- Serial-number based parts identification
- Genuine Caterpillar components
- Caterpillar Reman components
- OEM components
- Replacement parts
- Fuel-system components
- Cooling-system components
- Water pumps
- Oil pumps
- Turbochargers
- Cylinder components
- Electrical components
- Sensors
- Gaskets and seals
- Overhaul requirements
- Worldwide supply
Providing complete engine information from the beginning helps reduce the risk of incorrect component selection.
Frequently Asked QuestionsWhat is the Caterpillar 3512B?
The Caterpillar 3512B is a twelve-cylinder V-type four-stroke diesel engine belonging to Caterpillar's 3500 Series.
It is a later generation of the Caterpillar 3512 platform.
How many cylinders does the Caterpillar 3512B have?
The Caterpillar 3512B has 12 cylinders arranged in a V configuration.
What is the displacement of the Caterpillar 3512B?
The Caterpillar 3512B has a displacement of approximately 51.8 litres.
What is the bore and stroke of the Caterpillar 3512B?
The engine uses a 170 mm cylinder bore and 190 mm piston stroke.
Is the Caterpillar 3512B turbocharged?
Applicable Caterpillar 3512B configurations use turbocharging and aftercooling.
The exact turbocharger arrangement depends on the individual engine rating and configuration.
Can you supply Caterpillar 3512B injectors?
Yes. We can assist with applicable Caterpillar 3512B fuel injectors and related fuel-system components, subject to correct engine identification and availability.
Can you supply Caterpillar 3512B water pumps?
Yes. We can assist with applicable jacket-water pumps, auxiliary water pumps, sea water pumps and related cooling-system components.
The exact pump should be verified against the individual engine.
Can you supply Caterpillar 3512B turbochargers?
Yes. Depending on engine configuration and availability, we can assist with complete turbochargers, Caterpillar Reman options and related components.
Can you supply Caterpillar 3512B cylinder heads?
Yes. We can assist with complete cylinder heads and individual valve-train components.
Can you supply Caterpillar 3512B pistons and cylinder liners?
Yes. We can source pistons, piston rings, piston pins, cylinder liners, liner seals and related internal engine components.
Can you supply Caterpillar 3512B overhaul components?
Yes. Requirements can include pistons, liners, rings, bearings, cylinder heads, injectors, turbochargers, pumps, gaskets, seals and other major components.
For a complete requirement, Request a Quote.
Are Caterpillar 3512 and 3512B parts interchangeable?
Not automatically.
Although they belong to the same wider 3512 family, individual fuel-system, turbocharger, cooling, electrical and internal engine components can differ.
For the main engine family, visit Caterpillar 3512 Marine Engine Parts.
Are Caterpillar 3512B and 3512C parts interchangeable?
No general assumption of interchangeability should be made.
Always verify the component using the complete engine designation, serial number and arrangement number.
Can you supply Caterpillar Reman components for the 3512B?
Yes, where an applicable Caterpillar Reman option exists and is available.
The Reman reference should always be verified against the corresponding new component and individual engine arrangement.
What information is required for a Caterpillar 3512B parts quotation?
Provide:
Caterpillar 3512B + complete engine serial number + serial-number prefix + arrangement number + existing part number + quantity + application + delivery destination
Photographs of the engine identification plate and existing component can also help.
Request Caterpillar 3512B Marine Engine Parts
Looking for Caterpillar 3512B marine engine components, maintenance spares, Caterpillar Reman parts or complete overhaul requirements?
Send us your:
Engine model: Caterpillar 3512B
Complete engine serial number:
Serial-number prefix:
Arrangement number:
Part number:
Part description:
Quantity:
Application: Propulsion / Auxiliary / Generator
Required condition: Genuine / Caterpillar Reman / OEM / Replacement
Delivery destination:
For unidentified components, include photographs of the existing component and engine identification plate whenever available.
Our team can assist with requirements ranging from individual filters, injectors and water pumps to turbochargers, cylinder heads, pistons, liners and complete Caterpillar 3512B overhaul parts packages.
Email: request@alfamarinespareparts.com
For the wider V12 engine platform, visit Caterpillar 3512 Marine Engine Parts.
For additional Caterpillar engines and components, browse Caterpillar Marine Engine Parts.