Caterpillar 3508B Marine Engine Parts & Components
Alfa Marine Spare Parts supplies Caterpillar 3508B 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 3508B components for scheduled maintenance, engine repairs and major overhaul requirements.
Our sourcing capabilities cover cylinder components, pistons, liners, cylinder heads, fuel-system parts, injectors, turbochargers, cooling-system components, water pumps, lubrication parts, filters, bearings, gaskets, seals, sensors, electrical components and other Caterpillar 3508B engine requirements.
The Caterpillar 3508B belongs to the wider Caterpillar 3500 engine family and is a later generation of the V8 3508 platform.
For information about the base engine platform, visit Caterpillar 3508 Marine Engine Parts.
For additional Caterpillar engines and component categories, browse Caterpillar Marine Engine Parts.
For accurate parts identification, provide the complete engine designation, complete engine serial number, serial-number prefix, arrangement number and existing part number whenever available.
Need a specific Caterpillar 3508B component or complete overhaul requirement? Request a Quote or email request@alfamarinespareparts.com.
Caterpillar 3508B Engine Overview
The Caterpillar 3508B is an eight-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, with a displacement of approximately 34.5 litres.
The 3508B represents a later development of the original Caterpillar 3508 platform and can be encountered in marine propulsion, auxiliary, generator and other heavy-duty applications depending on the individual engine configuration.
Applicable configurations use turbocharging and aftercooling.
Individual Caterpillar 3508B engines can differ according to:
- Engine serial-number prefix
- Engine arrangement
- Duty rating
- Engine application
- Fuel-system configuration
- Turbocharger arrangement
- Cooling-system arrangement
- Control-system specification
- Production revision
Because different arrangements can use different components, the general designation “Caterpillar 3508B” may not be sufficient for accurate parts identification.
Always provide the complete engine serial number and arrangement number whenever possible.
For information about the wider V8 engine platform, visit Caterpillar 3508 Marine Engine Parts.
Caterpillar 3508B Technical Specifications
General specifications associated with the Caterpillar 3508B platform include:
SpecificationCaterpillar 3508BEngine type4-stroke dieselCylinder configurationV8Number of cylinders8Cylinder bore170 mmPiston stroke190 mmDisplacementApprox. 34.5 litresAspirationTurbocharged and aftercooled on applicable configurationsFuelDieselCoolingLiquid cooledEngine familyCaterpillar 3500 SeriesEngine generation3508BApplicationsMarine propulsion, auxiliary, generator and heavy-duty applications
Exact engine output, rated speed, dimensions, weight, fuel-system arrangement and installed equipment depend on the individual engine rating and arrangement.
Always verify specifications against the complete engine serial number and arrangement number.
Caterpillar 3508B Engine Parts & Components
Alfa Marine Spare Parts can source a broad range of Caterpillar 3508B engine components for routine maintenance, corrective repairs and major 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
- Turbochargers
- Aftercooler and air-system parts
- Cooling-system components
- Water pumps
- Lubrication-system components
- Oil pumps
- Filters
- Exhaust components
- Electrical components
- Sensors
- Gaskets and seals
- Overhaul components
Individual parts should always be checked against the engine serial number and arrangement before ordering.
Caterpillar 3508B Cylinder & Internal Engine Parts
Internal engine components operate under significant 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
For pistons, liners, bearings and other major internal components, provide the complete engine identification.
Do not assume that internal components from the original 3508 or another 3500-series engine automatically fit a 3508B.
Caterpillar 3508B Pistons & Cylinder Liners
Pistons 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
When requesting a complete eight-cylinder overhaul requirement, provide the required quantities together with the engine serial number and arrangement number.
This allows individual components to be checked against the applicable 3508B configuration.
Caterpillar 3508B Cylinder Head Parts
Cylinder head components can be required during top-end repairs and major 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 references and internal components can vary according to engine arrangement.
Always provide the existing cylinder-head part number whenever available.
Caterpillar 3508B Fuel System Parts
Correct fuel delivery is essential for combustion quality, engine performance and reliable operation.
Depending on the individual 3508B configuration, 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 the original 3508 and later 3508B configurations.
When requesting a component, provide:
Caterpillar 3508B + complete serial number + serial-number prefix + arrangement number + existing part number
Need help identifying a fuel-system component? Request a Quote.
Caterpillar 3508B Fuel Injectors
Fuel injectors should be identified using the individual engine serial number and arrangement rather than the general engine family.
Depending on application and availability, we can assist with:
- Genuine Caterpillar injectors
- Caterpillar Reman injectors
- OEM options
- Replacement injectors
- Injector seals
- Injector O-rings
- Related installation components
Do not assume an injector listed for an earlier Caterpillar 3508 automatically fits a 3508B.
Provide the existing injector part number whenever available.
Caterpillar 3508B Turbocharger Parts
Applicable Caterpillar 3508B configurations use turbocharging as part of the engine air system.
Depending on the individual 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 hardware
Turbocharger arrangements can vary according to engine rating and application.
Always provide the existing turbocharger part number or identification information whenever available.
Caterpillar 3508B Aftercooler & Air System Parts
Applicable turbocharged 3508B configurations use aftercooling as part of the engine intake-air system.
Requirements can include:
- Aftercooler cores
- Aftercooler housings
- Intake manifolds
- Intake pipes
- Air hoses
- Air filters
- Turbocharger connections
- Clamps
- Gaskets
- Seals
- O-rings
Air-system components should be matched to the exact engine arrangement.
Caterpillar 3508B Cooling System Parts
The cooling system maintains correct engine operating temperatures and protects internal components during continuous operation.
Depending on the individual engine arrangement, requirements can include:
- Jacket-water pumps
- Auxiliary water pumps
- Sea water pumps on applicable marine configurations
- 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 arrangements can differ between propulsion, auxiliary and generator installations.
Always identify the application when requesting cooling-system components.
Caterpillar 3508B Water Pumps
Different Caterpillar 3508B configurations can use different water pump assemblies.
Depending on the installation, requirements can include:
- Jacket-water pumps
- Auxiliary water pumps
- Sea water pumps
- Water pump housings
- Impellers
- Pump shafts
- Bearings
- Mechanical seals
- Drive components
- Gaskets
- O-rings
A pump used on an original Caterpillar 3508 should not automatically be assumed to fit a 3508B.
Even two 3508B engines can use different pump references depending on their arrangement.
For accurate identification, provide:
Engine model + complete serial number + serial-number prefix + arrangement number + existing pump part number
Need assistance identifying the correct pump? Request a Quote.
Caterpillar 3508B Lubrication System Parts
Correct lubrication protects bearings, crankshaft components, pistons, camshafts, turbochargers and other moving engine components.
Lubrication-system 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 3508B 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 whenever possible.
Caterpillar 3508B Exhaust System Parts
Exhaust-system components operate under high temperatures and can require inspection or replacement during engine maintenance.
Requirements can include:
- Exhaust manifolds
- Exhaust manifold sections
- Exhaust elbows
- Bellows
- Turbocharger exhaust connections
- Exhaust gaskets
- Clamps
- Seals
- Mounting hardware
Marine exhaust installations can contain application-specific equipment beyond the base engine.
Caterpillar 3508B Electrical Parts & Sensors
Depending on engine configuration, electrical and control-system requirements can include:
- Starter motors
- Alternators
- Wiring harnesses
- Temperature sensors
- Pressure sensors
- Speed sensors
- Level sensors
- Switches
- Relays
- Solenoids
- Electrical connectors
- Electronic control components on applicable configurations
- Engine monitoring components
Electrical and electronic components can differ between Caterpillar 3508 generations.
Always provide the complete engine identification when requesting sensors, harnesses or control components.
Caterpillar 3508B Gaskets & Seals
Gaskets and sealing components are required throughout the engine during routine 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 engine arrangement.
Caterpillar 3508B Overhaul Parts
Alfa Marine Spare Parts can assist with individual components and complete Caterpillar 3508B 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 3508B + complete engine serial number + arrangement number + complete required parts list
Providing the complete requirement allows individual components to be checked against the applicable engine arrangement before quotation.
Submit your requirement through our Request a Quote page.
Caterpillar 3508B Marine Applications
Depending on configuration and rating, Caterpillar 3508B engines can be encountered in marine applications including:
- Commercial vessels
- Workboats
- Tugboats
- Offshore vessels
- Fishing vessels
- Ferries
- Service vessels
- Marine propulsion systems
- Auxiliary installations
- Marine generator sets
The exact engine equipment depends on the vessel, duty cycle and individual engine arrangement.
A component from a propulsion configuration should not automatically be assumed to fit an auxiliary or generator engine.
Caterpillar 3508B Auxiliary & Generator Applications
The Caterpillar 3508B platform can also be encountered in auxiliary and power-generation applications.
Depending on 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 components and control equipment from propulsion engines.
Always state the application when requesting components.
Caterpillar 3508B Parts Identification
Correct identification is essential when sourcing Caterpillar 3508B engine parts.
The engine model alone may not provide enough information to identify the correct component.
For accurate identification, provide:
Engine model: Caterpillar 3508B
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:
- Injectors
- Turbochargers
- Water pumps
- Oil pumps
- Cylinder heads
- Pistons
- Cylinder liners
- Sensors
- Electrical components
- Gasket kits
- Overhaul components
Send your information through our Request a Quote page or email request@alfamarinespareparts.com.
Caterpillar 3508 vs 3508B
The Caterpillar 3508 and 3508B belong to the same wider V8 3500 engine platform, but they represent different generations.
They should not automatically be treated as identical for parts selection.
Differences can exist in:
- Fuel-system components
- Injectors
- Engine controls
- Sensors
- Turbocharger arrangements
- Cooling-system components
- Electrical equipment
- Cylinder components
- Engine ratings
- Accessory arrangements
A component listed for an original 3508 should therefore not automatically be assumed to fit a 3508B.
For information about the base engine family, visit Caterpillar 3508 Marine Engine Parts.
Caterpillar 3508B vs 3508C
The Caterpillar 3508B and 3508C are later generations within the Caterpillar 3508 platform.
Individual components can differ in areas such as:
- Fuel injection
- Electronic controls
- Sensors
- Turbochargers
- Cooling equipment
- Electrical systems
- Emissions-related equipment
- Engine ratings
- Accessory arrangements
A 3508C component should not automatically be treated as a replacement for a 3508B component.
Always verify the complete engine designation, serial number and arrangement number.
Caterpillar 3508B & the 3500 Engine Family
The 3508B belongs to the wider Caterpillar 3500 Series.
Principal engine configurations within the family include:
- Caterpillar 3508 — V8
- Caterpillar 3512 — V12
- Caterpillar 3516 — V16
Generations associated with the wider platform include:
- Caterpillar 3508
- Caterpillar 3508B
- Caterpillar 3508C
- Caterpillar 3512
- Caterpillar 3512B
- Caterpillar 3512C
- Caterpillar 3516
- Caterpillar 3516B
- Caterpillar 3516C
These engines share elements of the wider platform but should not be treated as interchangeable for parts selection.
For the wider Caterpillar engine catalogue, visit Caterpillar Marine Engine Parts.
Genuine, Caterpillar Reman, OEM & Replacement 3508B Parts
Depending on the component and availability, Caterpillar 3508B 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 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 3508B Parts
Alfa Marine Spare Parts supplies and sources Caterpillar 3508B 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 component categories, browse Caterpillar Marine Engine Parts.
Why Choose Alfa Marine Spare Parts for Caterpillar 3508B Components?
Correct identification is important when sourcing components for Caterpillar 3508B engines 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
- 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 3508B?
The Caterpillar 3508B is an eight-cylinder V-type four-stroke diesel engine belonging to Caterpillar's 3500 engine family.
It is a later generation of the Caterpillar 3508 platform.
How many cylinders does the Caterpillar 3508B have?
The Caterpillar 3508B has 8 cylinders arranged in a V configuration.
What is the Caterpillar 3508B displacement?
The Caterpillar 3508B has a displacement of approximately 34.5 litres.
What is the bore and stroke of the Caterpillar 3508B?
The engine uses a 170 mm cylinder bore and 190 mm piston stroke.
Is the Caterpillar 3508B turbocharged?
Applicable Caterpillar 3508B configurations use turbocharging and aftercooling.
The exact turbocharger arrangement depends on the individual engine configuration.
Can you supply Caterpillar 3508B injectors?
Yes. We can assist with applicable Caterpillar 3508B injectors and fuel-system components, subject to correct engine identification and availability.
Can you supply Caterpillar 3508B 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 must be verified against the individual engine arrangement.
Can you supply Caterpillar 3508B turbochargers?
Yes. Depending on engine configuration and availability, we can assist with complete turbochargers, Caterpillar Reman options and related components.
Can you supply Caterpillar 3508B cylinder heads?
Yes. We can assist with complete cylinder heads and individual valve-train components.
Can you supply Caterpillar 3508B pistons and liners?
Yes. We can source pistons, piston rings, piston pins, cylinder liners, liner seals and related internal engine components.
Can you supply Caterpillar 3508B 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 3508 and 3508B parts interchangeable?
Not automatically.
Although they belong to the same wider engine family, differences can exist in fuel systems, turbochargers, cooling components, controls, sensors and other equipment.
Are Caterpillar 3508B and 3508C parts the same?
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 3508B?
Yes, where an applicable Caterpillar Reman option exists and is available.
The Reman reference should always be verified against the corresponding new component and engine arrangement.
What information is required for a Caterpillar 3508B parts quotation?
Provide:
Caterpillar 3508B + 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 3508B Marine Engine Parts
Looking for Caterpillar 3508B marine engine components, maintenance spares, Caterpillar Reman parts or complete overhaul requirements?
Send us your:
Engine model: Caterpillar 3508B
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 3508B overhaul parts packages.
Email: request@alfamarinespareparts.com
For information about the wider V8 engine platform, visit Caterpillar 3508 Marine Engine Parts.
For additional Caterpillar engines and components, browse Caterpillar Marine Engine Parts.