Komatsu 6M122 Marine Engine Parts
The Komatsu 6M122 Marine Engine belongs to Komatsu’s established six-cylinder marine diesel engine family and has been used in commercial vessels requiring dependable propulsion power and straightforward heavy-duty diesel construction.
Documented marine variants include engines such as the Komatsu 6M122AP-1 and Komatsu 6M122BP-1, demonstrating that the 6M122 family was produced in different marine ratings and configurations.
These engines may be encountered in:
- Commercial Fishing Vessels
- Workboats
- Utility Vessels
- Passenger Craft
- Service Vessels
- Coastal Commercial Vessels
- Other Marine Applications
As operating hours accumulate, spare-parts requirements can range from routine filters, gaskets and seals to fuel-injection equipment, turbocharger components, cooling-system parts, cylinder heads, pistons, bearings, crankshaft components and complete overhaul parts.
Alfa Marine Spare Parts supports Komatsu 6M122 Marine Engine Parts requirements for:
- Planned Maintenance
- Commercial Vessel Repairs
- Fishing Vessel Maintenance
- Workboat Repairs
- Engine-Room Repairs
- Fuel-System Repairs
- Turbocharger Repairs
- Cooling-System Repairs
- Lubrication-System Repairs
- Cylinder Head Repairs
- Internal Engine Repairs
- Major Engine Overhauls
- Spare Parts Planning
Depending on component and availability, supply options can include:
- Genuine Komatsu Parts
- OEM-Quality Components
- Selected Aftermarket Parts
- Remanufactured Components
- Maintenance Parts
- Repair Components
- Overhaul Parts
What Are the Technical Specifications of the Komatsu 6M122?
The exact technical specification depends on the individual Komatsu 6M122 marine variant.
Documented marine versions include:
- Komatsu 6M122AP-1
- Komatsu 6M122BP-1
- Other 6M122 Marine Configurations
Because reliable published data differs between versions, output, aspiration arrangement, dimensions and installed equipment should always be confirmed against the exact engine identification.
SpecificationKomatsu 6M122 Marine EngineManufacturerKomatsuEngine Family6M122ApplicationMarine PropulsionConfigurationInline 6-CylinderCycleFour-Stroke DieselFuelDieselEngine Class122 mm-Bore FamilyKnown Marine Variants6M122AP-1, 6M122BP-1Documented 6M122AP-1 OutputApprox. 600 HPDocumented 6M122BP-1 OutputApprox. 482 HP in Listed Marine ConfigurationFuel SystemDepends on Exact VariantAspirationDepends on Exact VariantCoolingLiquid-Cooled Marine ConfigurationTypical ApplicationCommercial Marine Propulsion
Exact displacement, stroke, rated speed, turbocharger arrangement, engine dimensions and dry weight should be confirmed from the applicable engine documentation or identification plate.
What Does Komatsu 6M122 Mean?
The Komatsu 6M122 designation identifies an engine from Komatsu’s six-cylinder 122 mm-bore engine class.
The family is associated with:
- Six Cylinders
- Inline Cylinder Arrangement
- Four-Stroke Diesel Operation
- 122 mm-Bore Class
- Heavy-Duty Marine Construction
The letters and suffix following 6M122 can identify a particular configuration or rating.
This is why the complete engine model should be supplied when requesting parts.
Is the Komatsu 6M122 an Inline Six-Cylinder Engine?
Yes.
The Komatsu 6M122 is an inline six-cylinder diesel engine family.
An inline-six layout offers a relatively narrow installation compared with larger V-type engines while still providing substantial power for commercial marine propulsion.
Are There Different Komatsu 6M122 Marine Engine Versions?
Yes.
Documented marine versions include:
- Komatsu 6M122AP-1
- Komatsu 6M122BP-1
Other configuration-specific designations may also exist.
The existence of different versions means components should not automatically be assumed interchangeable across every 6M122 engine.
What Is the Difference Between the Komatsu 6M122AP-1 and 6M122BP-1?
The two designations represent different 6M122 marine configurations and ratings.
Published listings identify the 6M122AP-1 at approximately 600 HP, while examples of the 6M122BP-1 have been listed around 482 HP.
This difference demonstrates why the full engine model is important when identifying:
- Fuel Injection Equipment
- Turbocharger Components
- Cooling Components
- Pistons
- Cylinder Head Components
- Gaskets
- Exhaust Components
- Electrical Equipment
Is the Komatsu 6M122 Turbocharged?
Turbocharged 6M122 configurations exist, but the exact aspiration arrangement should be confirmed from the individual engine model.
Do not assume that every engine described simply as Komatsu 6M122 uses the same:
- Turbocharger
- Intake System
- Charge-Air Arrangement
- Exhaust System
- Fuel-System Components
Identification from the installed turbocharger can be especially useful when ordering replacement components.
Why Is the Exact Komatsu 6M122 Variant Important?
Different engine configurations can use different:
- Fuel Injection Pumps
- Fuel Injectors
- Turbochargers
- Cooling-Water Pumps
- Heat Exchangers
- Oil Coolers
- Pistons
- Cylinder Head Components
- Gaskets
- Electrical Components
- Exhaust Components
Ordering only from the general 6M122 designation may therefore not provide enough information for accurate parts identification.
Why Is the Komatsu 6M122 Serial Number Important?
A commercial marine engine can remain in service through several maintenance and overhaul cycles.
During that time, components may have been:
- Rebuilt
- Reconditioned
- Exchanged
- Replaced
- Superseded
- Updated
- Modified During Previous Repairs
This can be particularly relevant for:
- Fuel Injection Pumps
- Fuel Injectors
- Turbochargers
- Cooling-Water Pumps
- Oil Coolers
- Cylinder Heads
- Starter Motors
- Alternators
- Electrical Components
For accurate parts identification, provide the engine serial number together with identification from the currently installed component whenever possible.
Komatsu 6M122 Routine Maintenance Parts
Common maintenance requirements can include:
- Engine Oil Filters
- Fuel Filters
- Fuel-Water Separator Elements
- Air Filter Components
- Drive Belts
- Thermostats
- Gaskets
- O-Rings
- Seals
- Cooling-System Components
- Lubrication-System Components
- Service Kits
What Can Affect Komatsu 6M122 Component Life?
Operating hours are important, but they are not the only factor affecting engine condition.
Component life can also be influenced by:
- Continuous High-Load Operation
- Annual Operating Hours
- Frequent Load Changes
- Fuel Quality
- Lubricating Oil Condition
- Cooling-System Performance
- Air-Intake Condition
- Exhaust Temperature
- Engine-Room Temperature
- Maintenance History
- Previous Overhauls
- Long Periods of Inactivity
- Vessel Operating Profile
A fishing vessel operating long hours under propulsion load can therefore have different maintenance requirements from an intermittently operated vessel.
Komatsu 6M122 Fuel-System Parts
Potential requirements can include:
- Fuel Injection Pump
- Fuel Injection Pump Components
- Fuel Injectors
- Injector Nozzles
- Fuel Transfer Pump
- Primary Fuel Filters
- Secondary Fuel Filters
- Fuel-Water Separator Components
- High-Pressure Fuel Pipes
- Fuel Supply Pipes
- Fuel Return Components
- Fuel Connections
- Gaskets
- Seals
- O-Rings
Komatsu 6M122 Fuel Injection Pump
Potential requirements can include:
- Complete Fuel Injection Pump
- Reconditioned Fuel Injection Pump
- Injection Pump Components
- Pump Seals
- Pump Gaskets
- Fuel Connections
- Associated Fuel-System Components
Why Should the Existing Komatsu 6M122 Injection Pump Be Identified?
The currently fitted fuel injection pump may have been rebuilt or exchanged during previous maintenance.
Useful identification information includes:
- Exact Engine Variant
- Engine Serial Number
- Engine Build Information
- Existing Komatsu Part Number
- Injection Pump Manufacturer
- Pump Type
- Pump Identification Number
- Identification Plate
- Clear Photographs
This helps reduce the risk of selecting fuel-system parts from the 6M122 designation alone.
Komatsu 6M122 Fuel Injectors
Potential requirements can include:
- Complete Fuel Injectors
- Injector Nozzles
- Injector Sealing Components
- High-Pressure Fuel Pipes
- Fuel Return Components
- Associated Hardware
What Are Possible Signs of a Komatsu 6M122 Injector Problem?
Possible symptoms can include:
- Difficult Starting
- Rough Engine Operation
- Uneven Cylinder Performance
- Increased Exhaust Smoke
- Abnormal Cylinder Exhaust Temperature
- Reduced Engine Power
- Increased Fuel Consumption
- Abnormal Combustion Noise
These symptoms do not automatically confirm injector failure.
Fuel delivery, injection-pump condition, injection timing, compression, valve condition and airflow should also be investigated.
Why Is Cylinder-to-Cylinder Comparison Useful on the Komatsu 6M122?
Because the 6M122 is a six-cylinder engine, comparing operating conditions between cylinders can provide useful diagnostic information.
Engineers may compare:
- Exhaust Temperature
- Combustion Behaviour
- Injector Performance
- Compression
- Valve Condition
- Fuel Delivery
- Exhaust Smoke
- Cylinder Contribution
A cylinder behaving noticeably differently from the other five may justify further inspection.
Komatsu 6M122 Fuel Filter Parts
Potential requirements can include:
- Primary Fuel Filters
- Secondary Fuel Filters
- Fuel Filter Elements
- Fuel-Water Separator Components
- Filter Housings
- Filter Seals
- O-Rings
- Drain Components
Why Is Fuel Cleanliness Important on the Komatsu 6M122?
Fuel contamination can damage precision fuel-system components.
Possible contaminants include:
- Water
- Sediment
- Tank Debris
- Rust
- Corrosion Products
- Microbial Contamination
Poor fuel condition can contribute to:
- Injector Wear
- Injection-Pump Wear
- Difficult Starting
- Poor Combustion
- Reduced Engine Power
- Increased Exhaust Smoke
- Unstable Engine Operation
Komatsu 6M122 Turbocharger Parts
For turbocharged 6M122 configurations, potential requirements can include:
- Complete Turbocharger
- Turbocharger Cartridge
- Compressor Components
- Turbine Components
- Bearings
- Seals
- Oil Supply Components
- Oil Drain Components
- Intake Connections
- Exhaust Connections
- Turbocharger Gaskets
- Mounting Hardware
What Are Possible Signs of a Komatsu 6M122 Turbocharger Problem?
On a turbocharged version, possible symptoms can include:
- Reduced Engine Power
- Poor Acceleration
- Reduced Boost
- Increased Exhaust Smoke
- Abnormal Turbocharger Noise
- Oil Leakage
- Increased Oil Consumption
- High Exhaust Temperature
These symptoms should be diagnosed before the turbocharger is automatically replaced.
What Can Cause a Komatsu 6M122 Turbocharger to Fail?
Possible contributing factors can include:
- Restricted Lubricating-Oil Supply
- Poor Oil Drainage
- Contaminated Lubricating Oil
- Restricted Air Intake
- Foreign-Object Damage
- Exhaust Restriction
- Excessive Exhaust Temperature
- Prolonged Abnormal Engine Operation
Installing a replacement turbocharger without correcting the underlying problem can lead to repeated failure.
Does Black Smoke Mean the Komatsu 6M122 Turbocharger Has Failed?
Not necessarily.
Black smoke can also be associated with:
- Restricted Air Filters
- Fuel Injector Problems
- Fuel Injection Problems
- Excessive Fuel Delivery
- Low Compression
- Charge-Air Problems
- High Engine Load
- Propeller Overloading
- Hull Fouling
- Exhaust Restriction
The complete engine and propulsion system should therefore be considered.
Komatsu 6M122 Air Intake Parts
Potential requirements can include:
- Air Cleaner Components
- Air Filter Components
- Intake Pipes
- Intake Hoses
- Turbocharger Connections Where Installed
- Charge-Air Pipes Where Installed
- Intake Manifold Components
- Clamps
- Gaskets
- Seals
Komatsu 6M122 Charge-Air Components
Where the specific engine configuration uses charge-air cooling, potential requirements can include:
- Charge-Air Cooler
- Cooler Core
- Cooler Housing
- End Covers
- Air Connections
- Cooling Connections
- Gaskets
- O-Rings
- Seals
Why Is Charge-Air Condition Important?
On turbocharged engines, restrictions or leakage in the intake system can contribute to:
- Reduced Engine Power
- Increased Exhaust Smoke
- Higher Exhaust Temperature
- Poor Engine Response
- Reduced Combustion-Air Supply
The complete intake system should therefore be checked rather than focusing only on the turbocharger.
Komatsu 6M122 Cooling-System Parts
Potential requirements can include:
- Cooling-Water Pumps
- Seawater Pumps Where Installed
- Heat Exchanger Components
- Charge-Air Cooler Components Where Installed
- Oil Coolers
- Thermostats
- Cooling Pipes
- Cooling Hoses
- Temperature Components
- Gaskets
- O-Rings
- Seals
Komatsu 6M122 Cooling-Water Pump
Potential requirements can include:
- Complete Cooling-Water Pump
- Pump Housing
- Pump Shaft
- Bearings
- Mechanical Seals
- Impeller Components
- Gaskets
- O-Rings
What Can Reduce Komatsu 6M122 Cooling-Water Pump Performance?
Possible causes can include:
- Internal Wear
- Bearing Wear
- Seal Damage
- Impeller Damage
- Cavitation
- Corrosion
- Restricted Flow
- Cooling-System Contamination
The pump should be considered together with the complete cooling circuit.
Komatsu 6M122 Heat Exchanger Parts
Depending on marine configuration, potential requirements can include:
- Complete Heat Exchanger
- Heat Exchanger Core
- Tube Bundle
- Housing
- End Covers
- Cooling Connections
- Gaskets
- O-Rings
- Seals
What Can Restrict a Komatsu 6M122 Heat Exchanger?
Possible causes can include:
- Scale
- Salt Deposits
- Sediment
- Marine Growth
- Internal Corrosion
- Debris
- Cooling-System Contamination
Internal restriction can exist even when the cooler appears satisfactory externally.
Why Can a Komatsu 6M122 Overheat Under Load?
At low engine load, the cooling system has less heat to remove.
When propulsion load increases, considerably more heat must be transferred away from the engine.
A partially restricted cooling system may therefore appear satisfactory at low load but become inadequate when engine output rises.
Areas to investigate can include:
- Cooling-Water Pump
- Seawater Circuit
- Heat Exchanger
- Charge-Air Cooler Where Installed
- Oil Cooler
- Thermostats
- Cooling Pipes
- Cooling Hoses
- Coolant Condition
- Seawater Flow
- Exhaust Cooling Components
Komatsu 6M122 Lubrication-System Parts
Potential requirements can include:
- Engine Oil Filters
- Oil Filter Elements
- Oil Pump Components
- Oil Cooler
- Oil Cooler Core
- Oil Pressure Components
- Oil Pipes
- Oil Lines
- Oil Pan Components
- Front Crankshaft Seal
- Rear Crankshaft Seal
- Gaskets
- O-Rings
Why Is Lubrication Critical on the Komatsu 6M122?
Lubricating oil protects major components including:
- Crankshaft Journals
- Main Bearings
- Connecting Rod Bearings
- Pistons
- Camshaft Components
- Valve-Train Components
- Turbocharger Where Installed
Poor lubrication can therefore damage several important engine assemblies at the same time.
What Can Low Oil Pressure Mean on a Komatsu 6M122?
Possible causes can include:
- Incorrect Oil Level
- Incorrect Oil Grade
- Deteriorated Lubricating Oil
- Restricted Oil Filters
- Oil Pump Wear
- Excessive Bearing Clearance
- Internal Engine Wear
- Oil Pressure Sensor Problems
- Instrumentation Problems
Low oil pressure should be investigated systematically.
Komatsu 6M122 Oil Cooler Parts
Potential requirements can include:
- Complete Oil Cooler
- Oil Cooler Core
- Oil Cooler Housing
- Oil Connections
- Cooling Connections
- Gaskets
- O-Rings
- Seals
Komatsu 6M122 Cylinder Head Parts
Potential requirements can include:
- Complete Cylinder Heads
- Intake Valves
- Exhaust Valves
- Valve Guides
- Valve Seats
- Valve Springs
- Rocker Components
- Valve-Train Components
- Cylinder Head Gaskets
- Valve Cover Gaskets
- Injector Sealing Components
When Should a Komatsu 6M122 Cylinder Head Be Inspected?
Inspection may become necessary following:
- Engine Overheating
- Coolant Loss
- Cylinder Head Gasket Failure
- Low Compression
- Valve Damage
- Abnormal Combustion
- Abnormal Cylinder Exhaust Temperature
- Major Engine Overhaul
Rebuild or Replace a Komatsu 6M122 Cylinder Head?
The decision should be based on inspection and measurements.
Important areas can include:
- Cracking
- Corrosion
- Flatness
- Valve Condition
- Valve-Seat Condition
- Valve-Guide Wear
- Sealing Surfaces
- Previous Machining
- Thermal Damage
A serviceable cylinder head may remain suitable for rebuilding.
Severe structural or dimensional damage may make replacement more appropriate.
Komatsu 6M122 Pistons and Piston Rings
Potential requirements can include:
- Pistons
- Piston Ring Sets
- Piston Pins
- Piston Pin Bushings
- Retaining Components
What Can Worn Komatsu 6M122 Piston Rings Cause?
Possible symptoms can include:
- Excessive Blow-By
- Increased Oil Consumption
- Reduced Compression
- Difficult Starting
- Increased Exhaust Smoke
- Reduced Engine Power
Piston, ring and cylinder condition should be evaluated together.
Why Should Komatsu 6M122 Pistons and Cylinders Be Measured During Overhaul?
Measurements can establish:
- Cylinder Wear
- Bore Condition
- Piston Condition
- Piston-to-Bore Clearance
- Ring-Groove Condition
- Whether Components Can Be Reused
- Which Replacement Components Are Required
Installing new piston rings cannot compensate for excessive cylinder or piston wear.
Komatsu 6M122 Connecting Rod Parts
Potential requirements can include:
- Connecting Rods
- Connecting Rod Bearings
- Small-End Bushings
- Connecting Rod Bolts
- Associated Hardware
Connecting rods should be inspected carefully following bearing damage, lubrication failure, piston damage or other significant internal engine problems.
Komatsu 6M122 Main and Connecting Rod Bearings
Potential requirements can include:
- Main Bearing Sets
- Connecting Rod Bearing Sets
- Big-End Bearings
- Thrust Bearings
- Thrust Components
Why Should Komatsu 6M122 Bearing Dimensions Be Confirmed?
Previous overhaul work may have involved crankshaft repair or machining.
A crankshaft may have been:
- Polished
- Repaired
- Reground
- Replaced
Actual crankshaft measurements should therefore guide final bearing selection.
Komatsu 6M122 Crankshaft Parts
Potential requirements can include:
- Complete Crankshaft
- Main Bearings
- Connecting Rod Bearings
- Thrust Components
- Crankshaft Gear Components
- Front Crankshaft Seal
- Rear Crankshaft Seal
What Should Be Checked on a Komatsu 6M122 Crankshaft?
During overhaul, inspection can include:
- Main Journal Diameter
- Connecting Rod Journal Diameter
- Journal Surface Condition
- Scoring
- Taper
- Out-of-Round Condition
- Heat Damage
- Previous Machining
- General Crankshaft Condition
Komatsu 6M122 Camshaft and Timing Components
Potential requirements can include:
- Camshaft Components
- Camshaft Bearings
- Timing Gears
- Gear-Train Components
- Timing Covers
- Timing Cover Gaskets
- Valve-Train Components
Komatsu 6M122 Gaskets and Seals
Potential requirements can include:
- Cylinder Head Gaskets
- Valve Cover Gaskets
- Intake Gaskets
- Exhaust Gaskets
- Turbocharger Gaskets Where Applicable
- Charge-Air Cooler Gaskets Where Applicable
- Cooling-System Gaskets
- Oil Cooler Gaskets
- Injector Seals
- Front Crankshaft Seal
- Rear Crankshaft Seal
- O-Rings
- Upper Gasket Sets
- Lower Gasket Sets
- Complete Engine Gasket Sets
- Engine Seal Kits
Are All Komatsu 6M122 Gasket Sets the Same?
Not necessarily.
The correct gasket package can depend on:
- Exact Engine Variant
- Engine Serial Number
- Engine Build Information
- Installed Components
- Aspiration Configuration
- Production Changes
- Previous Modifications
The exact engine configuration should therefore be confirmed before ordering.
Komatsu 6M122 Starter Motor Parts
Potential requirements can include:
- Complete Starter Motors
- Starter Solenoids
- Relays
- Electrical Connections
- Associated Hardware
Does Slow Cranking Automatically Mean Starter Failure?
No.
Other possible causes can include:
- Weak Batteries
- Corroded Battery Connections
- Damaged Battery Cables
- Poor Ground Connections
- Excessive Electrical Resistance
- Relay Problems
- Control-Circuit Problems
The complete starting circuit should be checked before replacing the starter motor.
Komatsu 6M122 Alternator Parts
Potential requirements can include:
- Complete Alternators
- Alternator Components
- Drive Belts
- Pulleys
- Belt-Tensioning Components
- Electrical Connections
Komatsu 6M122 Electrical Components
Depending on the exact installation, potential requirements can include:
- Temperature Senders
- Oil Pressure Senders
- Speed Sensors
- Switches
- Relays
- Wiring Components
- Electrical Connectors
- Alarm Components
- Shutdown Components
- Starter Components
- Alternator Components
Komatsu 6M122 Exhaust-System Parts
Potential requirements can include:
- Exhaust Manifold Components
- Turbocharger Exhaust Connections Where Applicable
- Exhaust Pipes
- Expansion Connections
- Exhaust Gaskets
- Seals
- Clamps
- Associated Hardware
Why Is Exhaust Restriction Important on the Komatsu 6M122?
Exhaust restriction can contribute to:
- Reduced Engine Power
- Increased Exhaust Temperature
- Increased Exhaust Smoke
- Reduced Turbocharger Performance
- Poor Engine Response
The exhaust system should therefore be considered during performance troubleshooting.
Komatsu 6M122 Engine Overhaul Parts
Depending on inspection findings, overhaul requirements can include:
- Pistons
- Piston Rings
- Piston Pins
- Main Bearings
- Connecting Rod Bearings
- Connecting Rods
- Small-End Bushings
- Thrust Components
- Cylinder Head Components
- Intake Valves
- Exhaust Valves
- Crankshaft Seals
- Complete Gasket Sets
- Seal Kits
- Fuel-System Components
- Turbocharger Components Where Applicable
- Cooling-System Components
- Lubrication-System Components
More extensive repairs may require:
- Complete Cylinder Heads
- Crankshaft
- Camshaft Components
- Fuel Injectors
- Fuel Injection Pump
- Turbocharger Where Installed
- Cooling-Water Pump
- Heat Exchanger Components
- Charge-Air Components
- Oil Cooler
- Starter Motors
- Alternators
Is There One Standard Komatsu 6M122 Overhaul Kit?
Not necessarily.
The correct overhaul package should be determined from:
- Exact Engine Variant
- Engine Serial Number
- Engine Build Information
- Operating Hours
- Maintenance History
- Previous Overhauls
- Cylinder Measurements
- Piston Condition
- Crankshaft Dimensions
- Bearing Condition
- Cylinder Head Condition
- Fuel Injection Equipment
- Turbocharger Configuration Where Applicable
- Cooling-System Condition
Why Should Inspection Come Before Ordering a Komatsu 6M122 Overhaul Kit?
Previous overhaul work may have changed the engine from its original configuration.
Previous machining or replacement can affect:
- Crankshaft Dimensions
- Bearing Requirements
- Cylinder Condition
- Piston Requirements
- Cylinder Head Condition
- Fuel Injection Equipment
- Turbocharger Configuration
A practical process is:
Identify the engine → inspect the components → measure where necessary → confirm part numbers → order.
Genuine Komatsu 6M122 Marine Engine Parts
Depending on availability, genuine components may be available for selected:
- Planned Maintenance
- Fuel-System Repairs
- Turbocharger Repairs Where Applicable
- Cooling-System Repairs
- Cylinder Head Repairs
- Internal Engine Repairs
- Major Engine Overhauls
OEM-Quality Komatsu 6M122 Parts
Where the original component manufacturer and correct technical specification can be established, OEM-quality sourcing may be possible for:
- Fuel Injection Components
- Turbocharger Components Where Applicable
- Pumps
- Bearings
- Filters
- Cooling Components
- Starter Motors
- Alternators
- Other Engine Components
Aftermarket Komatsu 6M122 Parts
Selected aftermarket alternatives may be available for:
- Filters
- Gaskets
- Seals
- Bearings
- Pistons
- Piston Rings
- Cooling-System Components
- Maintenance Components
- Selected Internal Engine Parts
Compatibility should always be confirmed against the exact Komatsu 6M122 configuration.
Remanufactured Komatsu 6M122 Components
Depending on availability, professionally remanufactured options may include:
- Fuel Injectors
- Fuel Injection Pumps
- Turbochargers Where Applicable
- Cylinder Heads
- Starter Motors
- Alternators
- Selected Pumps
- Other Rebuildable Components
What Vessels Use Komatsu 6M122 Marine Engines?
Depending on the exact variant and rating, Komatsu 6M122 marine engines may be used in:
- Commercial Fishing Vessels
- Workboats
- Utility Vessels
- Passenger Craft
- Service Vessels
- Coastal Commercial Vessels
- Other Marine Craft
Actual vessel suitability depends on engine rating, marine gear, propulsion arrangement and vessel design.
What Information Should I Provide for Komatsu 6M122 Parts?
For accurate Komatsu 6M122 Marine Engine Parts identification, provide:
- Exact Engine Variant — 6M122AP-1, 6M122BP-1 or Other Version
- Engine Serial Number
- Engine Build Information
- Existing Komatsu Part Number
- Component Manufacturer Number
- Fuel Injection Pump Identification Where Relevant
- Injector Identification Where Relevant
- Turbocharger Identification Where Relevant
- Cooling-Water Pump Identification Where Relevant
- Part Description
- Quantity Required
- Clear Photographs
- Vessel Application
- Marine Gear Information Where Relevant
- Delivery Country or Nearest Port
For major components, photographs showing the engine identification plate and the actual component being replaced can be particularly useful.