Caterpillar 3406B Marine Engine Parts & Spares
Alfa Marine Spare Parts supplies Caterpillar 3406B marine engine parts and spares for commercial vessels, workboats, fishing vessels, tugboats, auxiliary engines and marine generator applications.
We source genuine, OEM, replacement and applicable Reman Caterpillar 3406B 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, water pumps, sea water pumps, oil pumps, oil coolers, filters, starters, alternators, gaskets, seals and overhaul parts.
The 3406B belongs to the wider Caterpillar 3400 Series Marine Engine Parts family.
For information about the complete 3406 platform, visit our Caterpillar 3406 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 3406B part? Request a Quote or email request@alfamarinespareparts.com.
Caterpillar 3406B Engine Overview
The Caterpillar 3406B is an inline six-cylinder, four-stroke diesel engine belonging to Caterpillar's established 3400 Series.
The 3406 platform was produced in several generations, including:
- Caterpillar 3406
- Caterpillar 3406B
- Caterpillar 3406C
The 3406B retains the heavy-duty inline-six architecture associated with this engine family and has been used across marine, industrial and power-generation applications.
The engine is based on the approximately 14.6-litre displacement class of the 3406 family.
Applicable configurations use turbocharging, with individual fuel, cooling, turbocharger and auxiliary arrangements varying according to engine serial number and application.
The complete 3406B designation is important when ordering parts. A component fitted to a 3406B should not automatically be considered suitable for an earlier 3406 or later 3406C.
For the complete family, visit our Caterpillar 3400 Series Marine Engine Parts page.
Caterpillar 3406B Technical SpecificationsSpecificationCaterpillar 3406BEngine manufacturerCaterpillarEngine model3406BEngine familyCaterpillar 3400 SeriesEngine type4-stroke dieselCylinder configurationInline 6Number of cylinders6Displacement classApprox. 14.6 LAspirationTurbocharged on applicable configurationsApplicationMarine propulsion, auxiliary and generator applicationsCooling arrangementApplication dependentParts identificationSerial number and arrangement dependent
Exact specifications, ratings and installed equipment can vary according to the individual engine configuration and application.
Caterpillar 3406B Parts & Spares
Alfa Marine Spare Parts can assist with a broad selection of Caterpillar 3406B parts for maintenance, repairs and 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
- Gaskets
- O-rings
- Seals
Major internal-engine parts should always be identified against the engine serial number and arrangement.
Caterpillar 3406B 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
Cylinder-head configuration can vary according to engine serial-number range and application.
Caterpillar 3406B Pistons & Cylinder Liners
For engine repair and overhaul requirements, 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
The engine serial number should be checked before selecting pistons, liners or overhaul parts.
Caterpillar 3406B Fuel System Parts
Fuel-system requirements can include:
- Fuel injectors
- Fuel nozzles
- Fuel injection parts
- Fuel 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 3406, 3406B and 3406C generations.
Whenever possible, provide the existing injector, nozzle or pump number.
Caterpillar 3406B Turbocharger Parts
Applicable Caterpillar 3406B configurations use turbocharging.
Turbocharger requirements can include:
- Complete turbochargers
- Reman turbochargers
- Turbocharger cartridges
- Turbine parts
- Compressor parts
- Bearings
- Seals
- Oil-feed parts
- Oil-return parts
- Intake connections
- Exhaust connections
- Mounting gaskets
One documented Caterpillar reference associated with applicable 3406B Marine Engine applications is:
20R-2992 — Cat Reman Turbocharger
A corresponding documented new turbocharger reference is:
110-7897
These references should not be treated as universal for every 3406B engine.
Always verify the engine serial number and existing turbocharger number before ordering.
Caterpillar 3406B Cooling System Parts
Cooling-system requirements can include:
- Jacket-water pumps
- Sea water pumps
- Raw-water pumps
- Heat exchangers
- Aftercooler parts
- Oil coolers
- Thermostats
- Cooling pipes
- Mechanical seals
- Pump shafts
- Bearings
- Gaskets
- O-rings
Marine cooling arrangements can differ according to the vessel and engine installation.
The existing pump number should be provided whenever available.
Caterpillar 3406B Sea Water Pump Parts
For applicable marine cooling arrangements, we 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 the engine serial number, cooling-system arrangement and vessel installation.
Do not assume every Caterpillar 3406B uses the same pump.
Caterpillar 3406B Lubrication System 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, camshaft, pistons and turbocharger during operation.
Caterpillar 3406B 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 high-value internal-engine parts, provide the complete engine serial number and arrangement information before ordering.
Caterpillar 3406B Air & Exhaust Parts
Air-intake and exhaust requirements can include:
- Aftercooler parts
- Intake manifolds
- Exhaust manifolds
- Turbocharger connections
- Exhaust connections
- Air-intake pipes
- Gaskets
- Seals
- Clamps
- Associated hardware
Installed arrangements can vary according to engine and vessel configuration.
Caterpillar 3406B Electrical Parts
Electrical requirements can include:
- Starter motors
- Starter solenoids
- Alternators
- Charging-system parts
- Temperature switches
- Pressure switches
- Sensors
- Gauges
- Wiring
- Connectors
Before ordering starters or alternators, verify the existing part number, voltage and mounting arrangement.
Caterpillar 3406B Overhaul Parts
For a complete Caterpillar 3406B 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
- Gaskets
- O-rings
- Seals
For a major overhaul requirement, send the complete engine identification together with the required parts list.
Caterpillar 3406B 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 3406B Reman Parts
Applicable Caterpillar Reman parts may be available for selected 3406B requirements.
Depending on the individual part number, these can include:
- Turbochargers
- Fuel-system parts
- Starters
- Alternators
- Other applicable engine parts
Reman availability should always be confirmed against the engine serial number and existing part reference.
Caterpillar 3406B Marine Applications
Applicable Caterpillar 3406B engines have been used across a range of marine and power applications.
These can include:
- Commercial vessels
- Fishing vessels
- Workboats
- Tugboats
- Marine propulsion
- Auxiliary engines
- Marine generator applications
Individual installations can differ according to vessel type, engine rating and cooling arrangement.
Caterpillar 3406B vs 3406
The Caterpillar 3406B belongs to the same wider engine platform as the original 3406.
Both use an inline six-cylinder layout, but parts should not automatically be considered interchangeable.
Differences can exist in:
- Fuel-system parts
- Turbochargers
- Cylinder parts
- Cooling-system parts
- Pumps
- Electrical parts
- Internal-engine parts
For information about the complete platform, visit our Caterpillar 3406 Marine Engine Parts page.
Caterpillar 3406B vs 3406C
The Caterpillar 3406B and 3406C are different generations within the 3406 family.
Although they share the wider engine architecture, individual parts can differ according to:
- Engine generation
- Serial-number range
- Arrangement
- Fuel-system configuration
- Turbocharger specification
- Cooling arrangement
- Application
Do not use a 3406C part number for a 3406B unless compatibility has been confirmed.
Caterpillar 3406B Within the 3400 Series
The 3406B belongs to Caterpillar's wider 3400 engine family.
Important members include:
EngineConfigurationCaterpillar 3406Inline 6Caterpillar 3406BInline 6Caterpillar 3406CInline 6Caterpillar 3408V8Caterpillar 3408BV8Caterpillar 3408CV8Caterpillar 3412V12Caterpillar 3412CV12Caterpillar 3412EV12
For information about the complete platform, visit our Caterpillar 3400 Series Marine Engine Parts page.
For the twelve-cylinder engine, visit our Caterpillar 3412 Marine Engine Parts page.
Caterpillar 3406B Parts Identification
Correct identification is particularly important for a legacy engine such as the 3406B.
When requesting parts, provide:
Engine model: Caterpillar 3406B
Engine serial number:
Serial-number prefix:
Arrangement number:
Existing part number:
Part description:
Quantity:
For pumps, turbochargers, starters, alternators and other externally mounted parts, photographs of the existing unit can also help with identification.
The preferred identification sequence is:
Caterpillar 3406B + Engine Serial Number + Arrangement Number + Existing Part Number
Why Source Caterpillar 3406B Parts From Alfa Marine Spare Parts?
Alfa Marine Spare Parts supports shipowners, ship managers, shipyards, marine engineers, repair companies, engine rebuilders and purchasing departments with Caterpillar 3406B parts and spares.
Depending on availability, we can assist with:
- Maintenance parts
- Fuel-system parts
- Cylinder parts
- Internal-engine parts
- Turbocharger 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
You can 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 3406B Part of the 3400 Series?
Yes. The Caterpillar 3406B belongs to the wider Caterpillar 3400 Series.
Visit our Caterpillar 3400 Series Marine Engine Parts page for the complete family.
How Many Cylinders Does the Caterpillar 3406B Have?
The Caterpillar 3406B uses an inline six-cylinder configuration.
What Is the Caterpillar 3406B Displacement?
The 3406 family is in the approximately 14.6-litre displacement class.
Is the Caterpillar 3406B Turbocharged?
Applicable 3406B configurations use turbocharging. The exact turbocharger should be identified against the individual engine.
Are Caterpillar 3406, 3406B and 3406C Parts the Same?
Not necessarily.
Parts can differ according to engine generation, serial number, arrangement and application.
Can You Supply Caterpillar 3406B Turbochargers?
Yes. We can assist with applicable new, replacement and Reman turbocharger requirements, subject to availability and correct engine identification.
Can You Supply Caterpillar 3406B Sea Water Pumps?
Yes. We can assist with applicable sea water pump and repair-part requirements.
The engine serial number and existing pump number should be provided whenever possible.
Can You Supply Caterpillar 3406B Overhaul Parts?
Yes. We can assist with applicable pistons, liners, rings, bearings, cylinder-head parts, fuel-system parts, turbocharger parts, pumps, gaskets, seals and other overhaul requirements.
Related Caterpillar Engine Pages
Caterpillar 3400 Series Marine Engine Parts
Caterpillar 3406 Marine Engine Parts
Caterpillar 3412 Marine Engine Parts
Caterpillar Marine Engine Parts & Rebuild Kits
Caterpillar Engine Parts Catalogue
Caterpillar 3512 Marine Engine Parts
Caterpillar 3516 Marine Engine Parts
Request Caterpillar 3406B Marine Engine Parts
Looking for Caterpillar 3406B marine engine parts, maintenance spares or overhaul parts?
Send us:
Engine model: Caterpillar 3406B
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 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.
Worldwide supply of Caterpillar 3406B parts for commercial vessels, workboats, fishing vessels, shipyards, marine repair companies and engine rebuilders.