Caterpillar 3408 Marine Engine Parts & Spares
Alfa Marine Spare Parts supplies Caterpillar 3408 marine engine parts and spares for commercial vessels, workboats, fishing vessels, tugboats, propulsion systems, auxiliary engines and marine generator applications.
We source genuine, OEM, replacement and applicable Reman Caterpillar 3408 parts, subject to availability, for scheduled maintenance, engine repairs, top-end overhaul and complete engine rebuild requirements.
Our sourcing capabilities cover fuel injectors, fuel injection parts, cylinder heads, pistons, piston rings, cylinder liners, connecting rods, bearings, crankshaft parts, camshaft parts, turbochargers, aftercooler parts, jacket-water pumps, sea water pumps, oil pumps, oil coolers, filters, starters, alternators, gaskets, seals and overhaul parts.
The Caterpillar 3408 belongs to the wider Caterpillar 3400 Series Marine Engine Parts family.
For six-cylinder engines in the same family, visit our Caterpillar 3406 Marine Engine Parts page.
For twelve-cylinder requirements, visit our Caterpillar 3412 Marine Engine Parts 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 3408 part? Request a Quote or email request@alfamarinespareparts.com.
Caterpillar 3408 Engine Overview
The Caterpillar 3408 is an eight-cylinder V-configuration, four-stroke diesel engine within Caterpillar's established 3400 Series.
The wider 3400 engine family includes important configurations such as:
- Caterpillar 3406
- Caterpillar 3406B
- Caterpillar 3406C
- Caterpillar 3408
- Caterpillar 3408B
- Caterpillar 3408C
- Caterpillar 3412
- Caterpillar 3412C
- Caterpillar 3412E
The 3408 occupies the V8 position within this engine family, between the inline-six 3406 platform and the larger V12 3412 platform.
Applicable 3408 engines have been used in marine propulsion, auxiliary, generator and other heavy-duty applications.
Individual engines can differ according to:
- Engine serial number
- Serial-number prefix
- Arrangement number
- Power rating
- Fuel-system configuration
- Turbocharger arrangement
- Cooling system
- Marine installation
- Production revision
For this reason, parts fitted to a 3408, 3408B or 3408C should not automatically be treated as interchangeable.
For information about the complete platform, visit our Caterpillar 3400 Series Marine Engine Parts page.
Caterpillar 3408 Technical OverviewSpecificationCaterpillar 3408ManufacturerCaterpillarEngine model3408Engine familyCaterpillar 3400 SeriesEngine type4-stroke dieselCylinder configurationV8Number of cylinders8Displacement classApprox. 18 LAspirationConfiguration dependentFuel systemConfiguration dependentCooling arrangementApplication dependentApplicationsMarine propulsion, auxiliary and generatorParts identificationSerial number and arrangement dependent
Exact ratings, engine speed and installed equipment can vary according to the individual 3408 configuration.
For major engine parts, identification should be based on the engine serial number, arrangement number and existing part number.
Caterpillar 3408 Parts & Spares
Alfa Marine Spare Parts can assist with a broad range of Caterpillar 3408 engine parts for routine service, corrective maintenance and major overhaul work.
Cylinder & Internal Engine Parts
Available 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 parts
- Camshaft parts
- Timing parts
- Gaskets
- O-rings
- Seals
If you already have an existing part number, you can also browse our Marine Spare Parts Catalogue.
Caterpillar 3408 Cylinder Head Parts
Cylinder-head requirements can include:
- Complete cylinder heads
- Intake valves
- Exhaust valves
- Valve guides
- Valve seats
- Valve springs
- Rocker parts
- Injector-related parts
- Cylinder-head gaskets
- O-rings
- Seals
- Fasteners
For top-end repairs or complete cylinder-head overhaul requirements, provide the engine serial number together with the existing part numbers whenever available.
Caterpillar 3408 Pistons & Cylinder Liners
For engine repair and overhaul work, we can assist with applicable:
- Pistons
- Piston rings
- Piston pins
- Cylinder liners
- Liner seals
- Connecting rods
- Connecting-rod bearings
- Main bearings
- Thrust parts
- Gaskets
- O-rings
Pistons and liners should not be ordered using only the general 3408 model designation.
Always confirm the complete engine serial number and arrangement.
Caterpillar 3408 Fuel System Parts
Fuel-system requirements can include:
- Fuel injectors
- Fuel nozzles
- Fuel injection parts
- Injection-pump parts
- Fuel transfer pumps
- Fuel priming pumps
- Fuel filters
- Governor parts
- Fuel lines
- Injector seals
- Fuel-system gaskets
- Fittings
Fuel-system parts can differ between the 3408, 3408B and 3408C generations.
Whenever possible, provide the existing injector, nozzle or injection-system part number.
Caterpillar 3408 Fuel Injectors & Nozzles
Fuel injectors and nozzles are common Caterpillar 3408 maintenance and overhaul requirements.
For accurate identification, provide:
Engine model: Caterpillar 3408
Engine serial number:
Serial-number prefix:
Arrangement number:
Existing injector or nozzle number:
Quantity:
This is particularly important for older engines that may previously have received replacement or superseded fuel-system parts.
Caterpillar 3408 Turbocharger Parts
Applicable Caterpillar 3408 configurations use turbocharging.
Turbocharger requirements can include:
- Complete turbochargers
- Applicable Reman turbochargers
- Turbocharger cartridges
- Turbine parts
- Compressor parts
- Bearings
- Seals
- Oil-feed parts
- Oil-return parts
- Intake connections
- Exhaust connections
- Mounting gaskets
Turbocharger specifications can differ according to engine rating and arrangement.
For correct identification, provide:
Engine Serial Number + Existing Turbocharger Number
Do not assume a turbocharger fitted to a 3408B or 3408C automatically fits an earlier Caterpillar 3408.
Caterpillar 3408 Aftercooler Parts
Applicable engine configurations can use aftercooling within the intake-air system.
Aftercooler requirements can include:
- Aftercooler cores
- Aftercooler housings
- End covers
- Gaskets
- O-rings
- Seals
- Air connections
- Cooling connections
- Mounting parts
Aftercooler configuration should be confirmed against the individual engine and vessel installation.
Caterpillar 3408 Cooling System Parts
Marine cooling requirements can include:
- Jacket-water pumps
- Sea water pumps
- Raw-water pumps
- Heat exchangers
- Aftercooler parts
- Oil coolers
- Thermostats
- Cooling pipes
- Hoses
- Pump shafts
- Mechanical seals
- Bearings
- Gaskets
- O-rings
Cooling arrangements can vary between marine installations.
For pumps and other major cooling-system parts, provide the engine serial number and existing part number whenever available.
Caterpillar 3408 Sea Water Pump Parts
For applicable marine installations, Alfa Marine Spare Parts can assist with:
- Complete sea water pumps
- Raw-water pumps
- Impellers
- Pump shafts
- Mechanical seals
- Bearings
- Pump covers
- Pump housings
- Gaskets
- O-rings
- Repair parts
Sea water pump selection can depend on:
- Engine serial number
- Arrangement number
- Cooling configuration
- Vessel installation
- Existing pump number
- Connection arrangement
Do not assume every Caterpillar 3408 marine engine uses the same sea water pump.
Caterpillar 3408 Heat Exchanger Parts
For applicable heat-exchanger-cooled installations, requirements can include:
- Heat exchanger assemblies
- Heat exchanger cores
- End covers
- Gaskets
- O-rings
- Seals
- Cooling connections
- Mounting parts
The exact heat exchanger and cooling-system arrangement can differ according to the vessel installation.
Caterpillar 3408 Oil Pump & Lubrication Parts
Lubrication-system requirements can include:
- Engine oil pumps
- Oil filters
- Oil coolers
- Oil-pressure regulators
- Oil lines
- Oil-pressure switches
- Crankshaft seals
- Gaskets
- O-rings
Correct lubrication protects the crankshaft, bearings, pistons, camshaft and turbocharger during operation.
Oil pumps should be identified against the individual engine rather than selected only from the 3408 model name.
Caterpillar 3408 Crankshaft & Bearing Parts
Crankshaft and bearing requirements can include:
- Complete crankshaft
- Main bearings
- Connecting-rod bearings
- Thrust bearings
- Connecting rods
- Connecting-rod bushings
- Crankshaft seals
- Crankshaft gears
- Vibration-damper parts
- Associated hardware
For crankshaft enquiries, provide:
Engine serial number + arrangement number + existing crankshaft number
Caterpillar 3408 Camshaft & Timing Parts
Timing-system requirements can include:
- Camshafts
- Camshaft bearings
- Camshaft gears
- Timing gears
- Gear-train parts
- Covers
- Bushings
- Fasteners
- Gaskets
- Seals
Timing parts should be verified against the complete engine configuration before ordering.
Caterpillar 3408 Air Intake & Exhaust Parts
Air-intake and exhaust requirements can include:
- Intake manifolds
- Exhaust manifolds
- Turbocharger connections
- Aftercooler parts
- Air-intake pipes
- Exhaust connections
- Gaskets
- Seals
- Clamps
- Mounting hardware
The exact arrangement can vary according to engine rating and vessel installation.
Caterpillar 3408 Starter & Alternator Parts
Electrical requirements can include:
- Starter motors
- Starter solenoids
- Alternators
- Charging-system parts
- Temperature switches
- Pressure switches
- Gauges
- Wiring
- Connectors
Before ordering a starter or alternator, verify:
- Engine serial number
- Existing part number
- System voltage
- Mounting arrangement
- Electrical connections
Older vessel installations may have had electrical equipment replaced during their operating life.
Caterpillar 3408 Gaskets & Seals
Gasket and sealing requirements can include:
- Cylinder-head gaskets
- Rocker-cover gaskets
- Intake-manifold gaskets
- Exhaust-manifold gaskets
- Turbocharger gaskets
- Oil-pan gaskets
- Water-pump gaskets
- Crankshaft seals
- Oil seals
- Liner seals
- O-rings
For complete overhaul work, gasket and sealing requirements can be prepared together with the associated engine parts.
Caterpillar 3408 Overhaul Parts
For a complete Caterpillar 3408 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 parts
- Camshaft parts
- Fuel-system parts
- Turbocharger parts
- Cooling-system parts
- Oil pumps
- Oil cooler parts
- Gaskets
- O-rings
- Seals
For major overhaul requirements, send the complete engine identification together with the required parts list.
Caterpillar 3408 Top-End Overhaul Parts
Top-end overhaul requirements can include:
- Cylinder heads
- Intake valves
- Exhaust valves
- Valve guides
- Valve seats
- Valve springs
- Rocker parts
- Fuel injectors
- Injector seals
- Cylinder-head gaskets
- O-rings
- Seals
The exact overhaul scope should be determined according to engine condition and inspection results.
Caterpillar 3408 Reman Parts
Applicable Caterpillar Reman parts may be available for selected 3408 requirements.
Availability depends on the engine configuration and individual part number.
When requesting a Reman part, provide:
Engine model + serial number + arrangement number + existing part number
A Reman part listed for another 3408 configuration should not automatically be considered suitable for the individual marine engine.
Caterpillar 3408 Marine Applications
Applicable Caterpillar 3408 engines have been used in a range of heavy-duty marine applications.
These can include:
- Commercial vessels
- Fishing vessels
- Workboats
- Tugboats
- Utility vessels
- Marine propulsion
- Auxiliary engines
- Marine generator applications
Individual installations can differ according to engine rating, duty cycle and vessel configuration.
Caterpillar 3408 vs 3406
The Caterpillar 3408 and 3406 belong to the same wider 3400 Series but use different engine layouts.
Caterpillar 3406 — inline 6
Caterpillar 3408 — V8
The different cylinder configuration means major internal-engine parts should not be treated as interchangeable.
For six-cylinder requirements, visit our Caterpillar 3406 Marine Engine Parts page.
Caterpillar 3408 vs 3412
The Caterpillar 3408 and 3412 both belong to the wider 3400 Series.
Their primary configurations are:
Caterpillar 3408 — V8
Caterpillar 3412 — V12
The 3412 has four additional cylinders and a different internal-engine architecture.
For twelve-cylinder requirements, visit our Caterpillar 3412 Marine Engine Parts page.
Caterpillar 3408, 3408B & 3408C
The wider 3408 platform includes:
- Caterpillar 3408
- Caterpillar 3408B
- Caterpillar 3408C
These model designations should be treated separately for parts identification.
Differences can affect:
- Fuel-system parts
- Turbochargers
- Cylinder heads
- Pistons
- Cylinder liners
- Cooling-system parts
- Oil pumps
- Electrical parts
- Gaskets and seals
Always verify the complete engine designation before selecting replacement parts.
Caterpillar 3408 Within the 3400 Series
The Caterpillar 3408 belongs to the wider Caterpillar 3400 family.
EngineConfigurationCaterpillar 3406Inline 6Caterpillar 3406BInline 6Caterpillar 3406CInline 6Caterpillar 3408V8Caterpillar 3408BV8Caterpillar 3408CV8Caterpillar 3412V12Caterpillar 3412CV12Caterpillar 3412EV12
For the complete family overview, visit our Caterpillar 3400 Series Marine Engine Parts page.
Caterpillar 3408 Parts Identification
Correct parts identification is especially important for older Caterpillar 3408 engines because individual configurations and previous replacement history can differ.
When requesting parts, provide:
Engine model: Caterpillar 3408
Engine serial number:
Serial-number prefix:
Arrangement number:
Existing part number:
Part description:
Quantity:
For turbochargers, pumps, starters, alternators and other externally mounted parts, photographs of the existing unit can also help with identification.
The preferred identification sequence is:
Caterpillar 3408 + Engine Serial Number + Arrangement Number + Existing Part NumberWhy Source Caterpillar 3408 Parts From Alfa Marine Spare Parts?
Alfa Marine Spare Parts supports shipowners, ship managers, shipyards, marine engineers, purchasing departments, repair companies and engine rebuilders with Caterpillar 3408 parts and spares.
Depending on availability, we can assist with:
- Scheduled maintenance parts
- Fuel-system parts
- Cylinder parts
- Internal-engine parts
- Turbocharger parts
- Aftercooler parts
- Cooling-system parts
- Sea water pumps
- Lubrication-system parts
- Electrical parts
- Top-end overhaul parts
- Complete overhaul requirements
- Genuine parts
- OEM parts
- Replacement parts
- Applicable Reman parts
For the complete engine family, visit our Caterpillar 3400 Series 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 3408 Part of the 3400 Series?
Yes. The Caterpillar 3408 belongs to the wider Caterpillar 3400 Series.
Visit our Caterpillar 3400 Series Marine Engine Parts page for information about the complete family.
How Many Cylinders Does the Caterpillar 3408 Have?
The Caterpillar 3408 uses a V8 configuration with eight cylinders.
What Is the Caterpillar 3408 Displacement?
The Caterpillar 3408 is in the approximately 18-litre displacement class.
Are Caterpillar 3408, 3408B and 3408C Parts the Same?
Not necessarily.
Individual parts should be checked against the exact engine model, serial number, arrangement and existing part number.
Can You Supply Caterpillar 3408 Fuel Injectors?
Yes. We can assist with applicable injectors, nozzles and other fuel-system parts, subject to correct identification and availability.
Can You Supply Caterpillar 3408 Turbochargers?
Yes. We can assist with applicable genuine, OEM, replacement and Reman turbocharger requirements, subject to availability.
Provide the engine serial number and existing turbocharger number.
Can You Supply Caterpillar 3408 Sea Water Pumps?
Yes. We can assist with applicable sea water pumps, raw-water pumps and repair parts.
Provide the engine serial number and existing pump number because marine cooling arrangements can differ.
Can You Supply Caterpillar 3408 Overhaul Parts?
Yes. Depending on availability, we can assist with pistons, liners, rings, bearings, cylinder-head parts, fuel-system parts, turbocharger parts, pumps, gaskets, seals and other overhaul requirements.
What Information Do I Need to Order Caterpillar 3408 Parts?
The best starting point is:
Caterpillar 3408 + engine serial number + arrangement number + existing part number
Related Caterpillar Engine Pages
Caterpillar 3400 Series Marine Engine Parts
Caterpillar 3406 Marine Engine Parts
Caterpillar 3412 Marine Engine Parts
Caterpillar 3512 Marine Engine Parts
Caterpillar 3516 Marine Engine Parts
Caterpillar C18 Marine Engine Parts
Caterpillar C32 Marine Engine Parts
Caterpillar Marine Engine Parts & Rebuild Kits
Caterpillar Engine Parts Catalogue
Request Caterpillar 3408 Marine Engine Parts
Looking for Caterpillar 3408 marine engine parts, maintenance spares or overhaul parts?
Send us:
Engine model: Caterpillar 3408
Engine serial number:
Serial-number prefix:
Arrangement number:
Existing part number:
Part description:
Quantity:
Required condition: Genuine / OEM / Replacement / Reman where applicable
Delivery destination:
Required date:
If the part number is unknown, include clear photographs of the engine identification plate and existing part.
Email: request@alfamarinespareparts.com
For the complete family, visit our Caterpillar 3400 Series Marine Engine Parts page.
You can also visit our Caterpillar 3406 Marine Engine Parts and Caterpillar 3412 Marine Engine Parts pages.
For additional Caterpillar engines, browse our Caterpillar Marine Engine Parts & Rebuild Kits.
Worldwide supply of Caterpillar 3408 parts for commercial vessels, workboats, fishing vessels, shipyards, marine repair companies and engine rebuilders.