CUMMINS

Alfa Marine Spare Parts supplies genuine, OEM-quality, Cummins ReCon®, and selected aftermarket Cummins marine engine spare parts for commercial fishing vessels, yachts, tugboats, pilot boats, patrol craft, passenger ferries, workboats, offshore-support vessels, dredgers, cargo vessels, and marine generator installations.

We support shipowners, fleet operators, yacht-management companies, shipyards, marine workshops, generator specialists, and engine rebuilders with Cummins replacement components for:

• Routine engine servicing
• Preventive maintenance
• Emergency repairs
• Fuel-system repairs
• Cooling-system maintenance
• Turbocharger replacement
• Top-end engine overhauls
• Complete engine rebuilding
• Marine generator maintenance
• Auxiliary-engine repairs

Our Cummins marine parts range includes:

• Fuel injectors
• Injector nozzles
• Common-rail components
• High-pressure fuel pumps
• Mechanical injection-pump parts
• Turbochargers
• Seawater pumps
• Freshwater pumps
• Lubricating-oil pumps
• Heat exchangers
• Aftercoolers
• Pistons and cylinder liners
• Cylinder heads
• Main and connecting-rod bearings
• Filters
• Gaskets and seals
• Sensors
• Electronic control modules
• Starter motors
• Alternators
• Complete overhaul kits

Cummins manufactures propulsion engines, auxiliary engines, marine generator sets, vessel-control equipment, emissions solutions, and integrated power products for recreational and commercial vessels.

Cummins’ current published propulsion portfolio includes compact and high-horsepower engines ranging from the B- and QSB-family engines through the QSC, QSL, QSM and QSK platforms. Current listed engines include the QSC8.3, QSL9, QSM11, X15, QSK19, QSK38, QSK50, QSK60 and QSK95, together with selected legacy mechanical platforms such as the VTA28 and KTA families.

Cummins marine engines are used for:

• Main vessel propulsion
• Auxiliary propulsion
• Onboard electricity generation
• Emergency generator sets
• Diesel-electric propulsion
• Hydraulic and pump drives
• Fire-pump installations
• Deck machinery
• Refrigeration systems
• Commercial and recreational boating

Important Cummins marine engine families include:

• Cummins 4BT
• Cummins 4BTA
• Cummins 6BT
• Cummins 6BTA
• Cummins 6CTA
• Cummins B4.5
• Cummins QSB5.9
• Cummins QSB6.7
• Cummins QSB7
• Cummins QSC8.3
• Cummins QSL9
• Cummins QSM11
• Cummins M11
• Cummins N14
• Cummins X15
• Cummins KTA19
• Cummins KTA38
• Cummins KTA50
• Cummins QSK19
• Cummins QSK38
• Cummins QSK50
• Cummins QSK60
• Cummins QSK95
• Cummins VTA28
• Cummins marine generator engines
• Cummins Onan marine generator sets

Cummins engine model designations identify the engine family, displacement, aspiration, fuel system, and application.

Examples include:

• Cummins 6BT5.9-M
• Cummins 6BTA5.9-M3
• Cummins 6CTA8.3-M
• Cummins QSB6.7
• Cummins QSC8.3
• Cummins QSL9
• Cummins QSM11
• Cummins KTA19-M
• Cummins QSK38-M
• Cummins QSK60-M

Common designation letters include:

• B – Cummins B Series
• C – Cummins C Series
• M – marine application on many mechanical engines
• T – turbocharged
• A – aftercooled
• Q – Quantum electronically controlled engine family
• KTA – K Series, turbocharged and aftercooled
• QSK – electronically controlled Quantum K Series
• HPCR – high-pressure common-rail fuel system

The complete engine designation is essential. Parts for a 6BT5.9, 6BTA5.9 and QSB5.9 may differ even though the engines share a related basic platform.

Before ordering, customers should provide:

• Complete Cummins engine model
• Eight-digit engine serial number
• Control-parts list or CPL number
• Existing Cummins part number
• Engine data-plate photograph
• Propulsion or generator application
• Duty rating
• Rated speed
• Cooling arrangement
• Turbocharger model
• Marine gearbox or generator model

Cummins QuickServe Online can provide serial-number-specific manuals, parts catalogues and engine data for engines built since 1960.

The Cummins 4BT and 4BTA are compact four-cylinder diesel engines used in small workboats, fishing vessels, generator sets, pumps and marinized industrial installations.

Common models include:

• Cummins 4BT3.9
• Cummins 4BT3.9-M
• Cummins 4BTA3.9
• Cummins 4BTA3.9-M
• Cummins 4BTA3.9-M1
• Cummins 4BTA3.9-M2

Typical applications include:

• Small fishing vessels
• Workboats
• Passenger launches
• Harbour vessels
• Marine generator sets
• Hydraulic power units
• Pump drives

Frequently requested parts include:

• Fuel injectors
• Injector nozzles
• Injection pumps
• Fuel lift pumps
• Turbochargers
• Water pumps
• Oil pumps
• Thermostats
• Cylinder heads
• Pistons and rings
• Main bearings
• Connecting-rod bearings
• Gasket sets
• Starter motors
• Alternators
• Cummins 4BT marine parts
• Cummins 4BTA marine engine parts
• Cummins 4BT fuel injector
• Cummins 4BTA water pump
• Cummins 4BT turbocharger
• Cummins 4BT overhaul kit

The Cummins 6BT5.9 and 6BTA5.9 are among the most widely recognized Cummins marine diesel engines.

The 6BT5.9 is an inline six-cylinder, turbocharged, 5.9-litre engine using an inline mechanical injection pump. Marine versions can be supplied with water-cooled exhaust manifolds, marine turbocharger arrangements and classification options.

Common models include:

• Cummins 6BT5.9
• Cummins 6BT5.9-M
• Cummins 6BT5.9-M120
• Cummins 6BTA5.9
• Cummins 6BTA5.9-M2
• Cummins 6BTA5.9-M3
• Cummins 6BTA5.9-M4

Typical applications include:

• Commercial fishing vessels
• Motor yachts
• Passenger launches
• Patrol craft
• Workboats
• Pilot boats
• Marine generator sets
• Auxiliary installations

Frequently requested 6BT and 6BTA parts include:

• Fuel injectors
• Injector nozzles
• Bosch or Cummins injection-pump components
• Fuel lift pumps
• Turbochargers
• Seawater pumps
• Freshwater pumps
• Heat exchangers
• Aftercoolers
• Exhaust manifolds
• Oil coolers
• Pistons and rings
• Cylinder heads
• Complete overhaul kits
• Cummins 6BT marine parts
• Cummins 6BTA marine parts
• Cummins 6BT5.9 fuel injector
• Cummins 6BTA seawater pump
• Cummins 6BTA turbocharger
• Cummins 6BT heat exchanger
• Cummins 6BTA overhaul kit

The Cummins 6CT and 6CTA8.3 are inline six-cylinder engines used in fishing vessels, workboats, passenger craft, pilot boats and marine generator installations.

Marine versions can be supplied with heat-exchanger or keel-cooling arrangements and water-cooled or shielded wet exhaust manifolds.

Common models include:

• Cummins 6CT8.3
• Cummins 6CT8.3-M
• Cummins 6CTA8.3
• Cummins 6CTA8.3-M
• Cummins 6CTA8.3-M2
• Cummins 6CTA8.3-M3

Typical applications include:

• Commercial fishing vessels
• Passenger ferries
• Pilot boats
• Patrol craft
• Workboats
• Tugboats
• Marine generator sets

Frequently requested parts include:

• Fuel injectors
• Injection pumps
• Turbochargers
• Seawater pumps
• Freshwater pumps
• Heat exchangers
• Aftercoolers
• Exhaust manifolds
• Oil coolers
• Pistons and liners
• Cylinder heads
• Bearing sets
• Complete gasket kits
• Cummins 6CTA8.3 marine parts
• Cummins 6CT marine engine parts
• Cummins 6CTA injector
• Cummins 6CTA seawater pump
• Cummins 6CTA turbocharger
• Cummins 6CTA overhaul kit

The Cummins B4.5 is a modern four-cylinder marine engine using a high-pressure common-rail fuel system.

Cummins specifies primary and secondary fuel filtration and states that the engine’s fuel pump and injectors are designed for approved alternative fuels including selected biodiesel blends and military fuels.

Typical applications include:

• Patrol craft
• Workboats
• Passenger vessels
• Harbour craft
• Marine generator sets
• Auxiliary power systems

Frequently requested parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Fuel-pressure sensors
• Turbochargers
• Water pumps
• Oil pumps
• Filters
• Electronic sensors
• Control modules
• Gasket sets

The Cummins QSB family is widely used in recreational and light-commercial marine propulsion.

Common models include:

• Cummins QSB5.9
• Cummins QSB5.9-230
• Cummins QSB5.9-305
• Cummins QSB5.9-380
• Cummins QSB6.7
• Cummins QSB6.7-305
• Cummins QSB6.7-355
• Cummins QSB6.7-380
• Cummins QSB6.7-425
• Cummins QSB6.7-480
• Cummins QSB6.7-550
• Cummins QSB7

Typical applications include:

• Motor yachts
• Sportfishing vessels
• Patrol boats
• Pilot boats
• Fast passenger craft
• Commercial fishing boats
• Workboats
• Marine generator sets

Frequently requested QSB parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Fuel rails
• Fuel-pressure sensors
• Turbochargers
• Seawater pumps
• Jacket-water pumps
• Heat exchangers
• Aftercoolers
• Oil coolers
• Electronic control modules
• Sensors
• Pistons and rings
• Cylinder heads
• Overhaul kits

Cummins identifies the QSB6.7 among the mid-range engines supported by its overhaul-parts programme.

Popular SEO searches include:

• Cummins QSB5.9 marine parts
• Cummins QSB6.7 marine parts
• Cummins QSB6.7 injector
• Cummins QSB6.7 high-pressure fuel pump
• Cummins QSB6.7 seawater pump
• Cummins QSB6.7 turbocharger
• Cummins QSB overhaul kit

The Cummins QSC8.3 is an inline six-cylinder, 8.3-litre, turbocharged and aftercooled marine engine using high-pressure common-rail fuel injection.

Cummins publishes propulsion ratings of approximately 490 to 600 hp for the current QSC8.3 marine product. The platform includes seawater heat-exchanger cooling, water-cooled exhaust and digital vessel-control options.

Typical applications include:

• Motor yachts
• Sportfishing boats
• Patrol craft
• Pilot boats
• Passenger vessels
• Workboats
• Commercial fishing vessels

Frequently requested parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Fuel-pressure sensors
• Turbochargers
• Seawater pumps
• Freshwater pumps
• Heat exchangers
• Aftercoolers
• Oil coolers
• Sensors
• Electronic control modules
• Pistons and liners
• Cylinder heads
• Complete overhaul kits
• Cummins QSC8.3 marine parts
• Cummins QSC8.3 injector
• Cummins QSC8.3 fuel pump
• Cummins QSC8.3 seawater pump
• Cummins QSC8.3 turbocharger
• Cummins QSC8.3 overhaul kit

The Cummins QSL9 is an inline six-cylinder marine engine for propulsion, auxiliary and generator applications.

Cummins currently publishes marine propulsion ratings of approximately 290 to 410 hp for the QSL9.

Typical applications include:

• Commercial fishing vessels
• Workboats
• Passenger craft
• Pilot vessels
• Patrol boats
• Marine generators
• Auxiliary equipment

Frequently requested parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Turbochargers
• Water pumps
• Oil pumps
• Heat-exchanger parts
• Sensors
• Electronic control modules
• Pistons and liners
• Cylinder heads
• Gasket kits
• Complete overhaul kits

Cummins includes QSL9 among its supported mid-range overhaul engine families.

• Cummins QSL9 marine parts
• Cummins QSL9 fuel injector
• Cummins QSL9 fuel pump
• Cummins QSL9 turbocharger
• Cummins QSL9 water pump
• Cummins QSL9 overhaul kit

The Cummins QSM11 is an electronically controlled inline six-cylinder engine widely used in yachts, commercial fishing vessels, passenger boats and workboats.

Cummins currently publishes marine QSM11 ratings from approximately 300 to 715 hp.

Common engine families include:

• Cummins M11
• Cummins M11 Marine
• Cummins QSM11
• Cummins QSM11-455
• Cummins QSM11-610
• Cummins QSM11-670
• Cummins QSM11-715

Typical applications include:

• Motor yachts
• Sportfishing boats
• Passenger vessels
• Commercial fishing boats
• Pilot craft
• Patrol vessels
• Workboats
• Marine generator sets

Frequently requested parts include:

• Fuel injectors
• Injector actuators
• Fuel pumps
• Turbochargers
• Seawater pumps
• Freshwater pumps
• Heat exchangers
• Aftercoolers
• Oil coolers
• Sensors
• ECM components
• Pistons and liners
• Cylinder heads
• Complete overhaul kits
• Cummins QSM11 marine parts
• Cummins QSM11 fuel injector
• Cummins QSM11 seawater pump
• Cummins QSM11 turbocharger
• Cummins QSM11 cylinder head
• Cummins QSM11 overhaul kit
• Cummins M11 marine parts

The Cummins X15 marine platform is intended for commercial propulsion applications.

Cummins currently lists X15 marine propulsion ratings of approximately 450 to 600 hp, with configurations meeting selected IMO Tier II, EPA Tier 3 and EU requirements.

Typical applications include:

• Commercial fishing vessels
• Passenger craft
• Workboats
• Patrol vessels
• Pilot boats
• Harbour vessels

Frequently requested parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Turbochargers
• Water pumps
• Oil pumps
• Sensors
• Electronic control modules
• Aftertreatment parts
• Pistons and liners
• Cylinder heads
• Gasket kits

The Cummins KTA19 and QSK19 are heavy-duty six-cylinder engines used in commercial propulsion, tugboats, fishing vessels, offshore equipment and marine generator sets.

Common models include:

• Cummins KT19
• Cummins KTA19-M
• Cummins KTA19-M3
• Cummins KTA19-M4
• Cummins QSK19-M
• Cummins QSK19 propulsion
• Cummins QSK19 auxiliary

Cummins currently publishes QSK19 propulsion ratings from approximately 500 to 800 hp.

Typical applications include:

• Tugboats
• Passenger ferries
• Commercial fishing vessels
• Offshore-support craft
• Dredgers
• Workboats
• Marine generator sets

Frequently requested parts include:

• Fuel injectors
• PT fuel-system components
• High-pressure fuel pumps on later engines
• Turbochargers
• Water pumps
• Oil pumps
• Cylinder heads
• Pistons and liners
• Connecting rods
• Main bearings
• Gasket sets
• Complete overhaul components
• Cummins KTA19 marine parts
• Cummins QSK19 marine parts
• Cummins KTA19 injector
• Cummins QSK19 fuel pump
• Cummins KTA19 water pump
• Cummins QSK19 turbocharger
• Cummins KTA19 overhaul kit

The Cummins VTA28 is a V12 engine family used in commercial marine propulsion, auxiliary power and generator applications.

Cummins currently lists selected VTA28 marine propulsion ratings from approximately 565 to 815 hp.

Typical applications include:

• Tugboats
• Commercial fishing vessels
• Passenger ferries
• Workboats
• Dredgers
• Marine generator sets

Frequently requested parts include:

• Fuel injectors
• PT fuel-pump components
• Turbochargers
• Water pumps
• Oil pumps
• Cylinder heads
• Pistons and liners
• Bearings
• Gaskets and seals
• Complete overhaul components

The Cummins KTA38 and QSK38 are V12 heavy-duty engines used in propulsion, auxiliary and marine generator applications.

Common models include:

• Cummins KTA38-M
• Cummins KTA38-M1
• Cummins KTA38-M2
• Cummins QSK38-M
• Cummins QSK38 Tier 4
• Cummins QSK38 IMO III

Cummins currently publishes QSK38 propulsion ratings of approximately 1,000 to 1,400 hp for IMO Tier II versions and 1,000 to 1,500 hp for selected EPA Tier 4 and IMO III versions.

Typical applications include:

• Tugboats
• Offshore-support vessels
• Passenger ferries
• Commercial fishing vessels
• Patrol vessels
• Dredgers
• Marine generator sets
• Diesel-electric installations

Frequently requested parts include:

• Fuel injectors
• High-pressure fuel pumps
• Turbochargers
• Water pumps
• Oil pumps
• Cylinder heads
• Pistons and liners
• Connecting rods
• Main bearings
• Aftercooler parts
• Sensors
• Electronic control modules
• SCR and aftertreatment components
• Complete overhaul kits
• Cummins KTA38 marine parts
• Cummins QSK38 marine parts
• Cummins QSK38 injector
• Cummins KTA38 water pump
• Cummins QSK38 turbocharger
• Cummins QSK38 Tier 4 parts
• Cummins KTA38 overhaul kit

The Cummins KTA50 and QSK50 are V16 high-horsepower engines for demanding marine applications.

Common models include:

• Cummins KTA50-M
• Cummins KTA50-M2
• Cummins QSK50-M
• Cummins QSK50 propulsion
• Cummins QSK50 auxiliary

Cummins currently publishes QSK50 marine propulsion ratings from approximately 1,700 to 2,200 hp.

Typical applications include:

• Tugboats
• Offshore-support vessels
• Passenger ferries
• Large fishing vessels
• Dredgers
• Patrol vessels
• Marine generator systems

Frequently requested parts include:

• Fuel injectors
• Fuel-pump components
• Turbochargers
• Water pumps
• Lubricating-oil pumps
• Cylinder heads
• Pistons and liners
• Connecting rods
• Main bearings
• Charge-air cooler parts
• Sensors
• Gasket and seal kits
• Complete overhaul components
• Cummins KTA50 marine parts
• Cummins QSK50 marine parts
• Cummins QSK50 fuel injector
• Cummins KTA50 water pump
• Cummins QSK50 turbocharger
• Cummins QSK50 overhaul parts

Cummins is expanding its high-horsepower marine portfolio with the K50 marine engine. Cummins announced that the market-ready K50 would be showcased at Asia Pacific Maritime in Singapore in March 2026.

Potential applications include:

• Commercial fishing vessels
• Tugboats
• Passenger ferries
• Offshore-support craft
• Workboats
• Marine generator installations
• Cummins K50 marine engine
• Cummins K50 marine parts
• Cummins K50 fuel injector
• Cummins K50 turbocharger
• Cummins K50 water pump
• Cummins K50 service parts

The Cummins QSK60 is a V16 high-horsepower engine used in large commercial propulsion, auxiliary and generator installations.

Cummins currently lists a 3,000 hp IMO Tier II propulsion version and selected EPA Tier 4 or IMO III versions rated from approximately 2,000 to 2,700 hp.

Typical applications include:

• Offshore-support vessels
• Tugboats
• Large ferries
• Dredgers
• Naval and government craft
• Diesel-electric vessels
• Large marine generator sets

Frequently requested QSK60 parts include:

• Common-rail injectors
• High-pressure fuel pumps
• Turbochargers
• Cooling-water pumps
• Lubricating-oil pumps
• Cylinder heads
• Pistons and liners
• Connecting rods
• Main bearings
• Sensors
• Control modules
• SCR and aftertreatment components
• Complete overhaul parts
• Cummins QSK60 marine parts
• Cummins QSK60 fuel injector
• Cummins QSK60 high-pressure fuel pump
• Cummins QSK60 turbocharger
• Cummins QSK60 cylinder head
• Cummins QSK60 overhaul parts

The Cummins QSK95 is one of the largest high-speed engines in the Cummins marine range.

Cummins currently publishes marine propulsion ratings of approximately 3,200 to 4,200 hp for the QSK95.

Typical applications include:

• Large ferries
• Offshore-support vessels
• Government and naval craft
• High-speed commercial vessels
• Diesel-electric propulsion
• Large marine generator installations

Frequently requested service categories include:

• Common-rail injectors
• High-pressure fuel pumps
• Turbochargers
• Cylinder heads
• Pistons and liners
• Connecting rods
• Main bearings
• Cooling-water pumps
• Oil pumps
• Sensors
• Electronic controls
• Aftertreatment components

Cummins offers marine generator, auxiliary and propulsion solutions designed specifically for marine operating conditions.

Common marine generator engine families include:

• Cummins 4BT
• Cummins 6BT
• Cummins 6BTA
• Cummins 6CTA
• Cummins QSB
• Cummins QSC
• Cummins QSL
• Cummins QSM
• Cummins KTA19
• Cummins QSK19
• Cummins KTA38
• Cummins QSK38
• Cummins KTA50
• Cummins QSK50
• Cummins QSK60
• Cummins Onan generator engines

Typical applications include:

• Main onboard electrical generation
• Emergency generators
• Yacht hotel loads
• Fishing-vessel generator sets
• Ferry electrical systems
• Pumps and compressors
• Refrigeration
• Deck machinery
• Dynamic-positioning systems
• Diesel-electric propulsion

Routine Maintenance Parts

• Cummins oil filters
• Primary fuel filters
• Secondary fuel filters
• Fleetguard filter elements
• Air filters
• Fuel-water separators
• Crankcase breather filters
• Coolant filters
• V-belts
• Multi-rib belts
• Thermostats
• Zinc anodes
• Hose kits
• O-ring kits
• Complete marine service kits

Fuel-System Parts

• Mechanical fuel injectors
• Common-rail fuel injectors
• Injector nozzles
• Injector sleeves
• Injector seals
• PT fuel-system injectors
• Mechanical injection pumps
• High-pressure common-rail pumps
• Fuel lift pumps
• Fuel-transfer pumps
• Fuel rails
• Fuel-pressure regulators
• Fuel-pressure sensors
• High-pressure pipes
• Fuel-return lines
• Fuel shut-off solenoids

Cooling-System Parts

• Seawater pumps
• Raw-water pumps
• Jacket-water pumps
• Freshwater circulation pumps
• Water-pump repair kits
• Impellers
• Thermostats
• Thermostat housings
• Heat exchangers
• Aftercoolers
• Charge-air coolers
• Oil coolers
• Fuel coolers
• Expansion tanks
• Cooling-water pipes
• End caps
• Seals and O-rings

Engine Overhaul Parts

• Complete overhaul kits
• In-frame overhaul kits
• Pistons
• Piston pins
• Piston-ring sets
• Cylinder liners
• Liner seals
• Connecting rods
• Connecting-rod bushes
• Crankshafts
• Camshafts
• Main bearings
• Connecting-rod bearings
• Thrust bearings
• Tappets
• Timing gears
• Complete gasket sets

Cummins genuine overhaul offerings include rings, liners, bearings, gaskets, filters, thermostats, cylinder heads, pumps, injectors and connecting rods, depending on the selected kit level and engine family.

Cylinder-Head and Valve Parts

• Complete cylinder heads
• Bare cylinder heads
• Cylinder-head gaskets
• Intake valves
• Exhaust valves
• Valve guides
• Valve seats
• Valve springs
• Rocker arms
• Rocker shafts
• Pushrods
• Injector sleeves
• Valve-cover gaskets

Turbocharger and Air-System Parts

• Complete Holset turbochargers
• Turbocharger cartridges
• Turbo repair kits
• Compressor wheels
• Turbine wheels
• Wastegate actuators
• Variable-geometry turbo components
• Intake manifolds
• Exhaust manifolds
• Aftercoolers
• Air filters
• Turbocharger oil pipes
• Mounting gaskets

Lubrication-System Parts

• Engine oil pumps
• Pre-lubrication pumps
• Oil filters
• Oil-filter housings
• Oil coolers
• Oil-pressure regulators
• Oil-pressure sensors
• Oil pans
• Dipsticks
• Lubrication pipes
• Front crankshaft seals
• Rear crankshaft seals

Electrical and Electronic Parts

• Starter motors
• Alternators
• Electronic control modules
• Wiring harnesses
• Marine instrument panels
• Vessel displays
• Oil-pressure sensors
• Coolant-temperature sensors
• Fuel-pressure sensors
• Boost-pressure sensors
• Crankshaft sensors
• Camshaft sensors
• Speed sensors
• Solenoids
• Relays

Exhaust and Emissions Parts

• Water-cooled exhaust manifolds
• Wet exhaust elbows
• Dry exhaust components
• Flexible exhaust connections
• Exhaust gaskets
• Selective catalytic reduction components
• DEF dosing components
• NOx sensors
• Exhaust-temperature sensors
• Catalyst elements
• Diesel particulate filters
• Mounting clamps

Marine Transmission and Mounting Parts

• Engine mounts
• Flexible couplings
• Damper plates
• Flywheels
• Flywheel housings
• Bell housings
• Gearbox adaptor plates
• Transmission oil coolers
• Control cables
• Mounting brackets
• Power-take-off components

Frequently requested Cummins marine products include:

• Cummins oil filters
• Cummins Fleetguard fuel filters
• Cummins air filters
• Cummins fuel-water separators
• Cummins fuel injectors
• Cummins injector nozzles
• Cummins high-pressure fuel pumps
• Cummins PT fuel-pump components
• Cummins seawater pumps
• Cummins freshwater pumps
• Cummins thermostats
• Cummins Holset turbochargers
• Cummins heat exchangers
• Cummins aftercoolers
• Cummins oil coolers
• Cummins starter motors
• Cummins alternators
• Cummins engine sensors
• Cummins electronic control modules
• Cummins piston-and-liner kits
• Cummins cylinder heads
• Cummins bearing sets
• Cummins complete gasket kits
• Cummins marine overhaul kits

Cummins offers genuine new parts, overhaul products, performance upgrades and bundled parts kits.

Cummins marine engines are commonly installed in:

• Commercial fishing vessels
• Trawlers
• Lobster boats
• Shrimp boats
• Sportfishing boats
• Motor yachts
• Passenger ferries
• Pilot boats
• Patrol craft
• Rescue vessels
• Fireboats
• Tugboats
• Push boats
• Workboats
• Crew-transfer vessels
• Offshore-support vessels
• Dredgers
• Cargo vessels
• Harbour vessels
• Marine generator sets
• Diesel-electric vessels

Alfa Marine Spare Parts supplies Cummins marine engine components to customers operating near important shipyards, ports, marinas, repair facilities and commercial marine regions worldwide.

The companies below are included for geographical and industry relevance only. Their inclusion does not imply that Alfa Marine Spare Parts is affiliated with, authorized by, or an official supplier to these organizations.

United States

Important American shipbuilding and repair facilities include:

• General Dynamics NASSCO
• Huntington Ingalls Industries
• Newport News Shipbuilding
• Ingalls Shipbuilding
• General Dynamics Bath Iron Works
• Fincantieri Marinette Marine
• Bollinger Shipyards
• Eastern Shipbuilding Group
• Austal USA
• Vigor Marine
• Conrad Shipyard
• Gulf Copper
• BAE Systems Jacksonville Ship Repair
• Hanwha Philly Shipyard

General Dynamics NASSCO operates a major shipbuilding facility in San Diego, while Bollinger provides vessel construction, repair and related marine services.

Important Cummins marine-service regions include:

• Florida
• Louisiana
• Texas
• California
• Washington
• Virginia
• Maine
• Massachusetts
• Alaska
• Gulf of Mexico
• Great Lakes

Canada

Important Canadian shipyards include:

• Seaspan Vancouver Shipyards
• Seaspan Victoria Shipyards
• Irving Shipbuilding
• Halifax Shipyard
• Davie Shipbuilding
• Heddle Shipyards

Canada’s National Shipbuilding Strategy established strategic relationships with Irving Shipbuilding and Seaspan’s Vancouver Shipyards for major vessel-construction programmes.

Important maritime regions include:

• Vancouver
• Victoria
• Halifax
• Québec
• Newfoundland
• Ontario
• Great Lakes
• Atlantic Canada

United Kingdom

Important UK shipbuilding and repair centres include:

• Navantia UK
• Cammell Laird
• A&P Falmouth
• A&P Tyne
• A&P Tees
• Babcock Rosyth
• Ferguson Marine
• BAE Systems Maritime
• Pendennis Shipyard

Important maritime regions include:

• Southampton
• Portsmouth
• Plymouth
• Falmouth
• Liverpool
• Newcastle
• Aberdeen
• Glasgow
• Belfast

Navantia UK supports British defence, shipbuilding and industrial-capability programmes.

Dubai and the United Arab Emirates

Important UAE shipyards and service centres include:

• Drydocks World Dubai
• Dubai Maritime City
• Grandweld Shipyards
• Albwardy Damen
• Gulf Craft
• Al Seer Marine
• Premier Marine Engineering Services

Important marine hubs include:

• Jebel Ali
• Port Rashid
• Dubai Harbour
• Abu Dhabi
• Sharjah
• Ras Al Khaimah
• Fujairah

Brazil

Important Brazilian shipbuilding and repair centres include:

• Estaleiro Atlântico Sul
• BrasFELS
• Wilson Sons Shipyards
• Estaleiro Rio Grande
• Mauá Shipyard
• Enseada Shipyard
• INACE
• Marina Verolme

Important maritime regions include:

• Rio de Janeiro
• Niterói
• Santos
• Itajaí
• Angra dos Reis
• Recife
• Salvador
• Fortaleza

Netherlands

Important Dutch shipyards include:

• Damen Shipyards
• Damen Shiprepair Rotterdam
• Royal IHC
• Royal Niestern Sander
• Holland Shipyards Group
• De Haas Shipyards

Important maritime centres include:

• Rotterdam
• Amsterdam
• IJmuiden
• Vlissingen
• Dordrecht
• Harlingen
• Den Helder

Spain

Important Spanish shipyards include:

• Navantia
• Astilleros Armón
• Astilleros Gondán
• Freire Shipyard
• Aresa Shipyard
• Metalships & Docks
• MB92 Barcelona

Navantia is active in vessel construction, ship repair, submarines, frigates, patrol vessels and lifecycle support.

Italy

Important Italian shipyards include:

• Fincantieri
• Sanlorenzo
• Benetti
• Palumbo Superyachts
• CRN
• Rosetti Marino
• Lusben

Fincantieri operates across several high-complexity marine and shipbuilding sectors.

Germany

Important German shipyards include:

• Meyer Werft
• Lürssen
• German Naval Yards
• Fassmer
• Abeking & Rasmussen
• Blohm+Voss
• Lloyd Werft

France

Important French shipyards include:

• Chantiers de l’Atlantique
• Naval Group
• Piriou
• OCEA
• Chantier Naval de Marseille
• La Ciotat Shipyards

Norway

Important Norwegian shipyards include:

• Vard
• Ulstein Verft
• Myklebust Verft
• Green Yard Kleven
• Larsnes Mek Verksted
• Brødrene Aa
• Fjellstrand

Singapore

Important Singapore shipbuilding and repair facilities include:

• Seatrium
• PaxOcean
• Strategic Marine
• Penguin Shipyard
• ST Engineering Marine

Important marine regions include:

• Tuas
• Jurong
• Sembawang
• Keppel Harbour

Australia

Important Australian shipyards and marine regions include:

• Austal Australia
• BAE Systems Maritime Australia
• Incat Tasmania
• Civmec
• Echo Marine Group
• Henderson Marine Precinct
• Perth
• Fremantle
• Darwin
• Brisbane
• Sydney
• Melbourne
• Tasmania

United States

• Lauderdale Marine Center
• Bahia Mar Yachting Center
• Rybovich Marina
• Newport Shipyard
• Derecktor Fort Pierce
• Safe Harbor marina network
• San Diego marine-service facilities

United Kingdom

• Ocean Village Marina
• Hamble Point Marina
• Port Solent Marina
• Premier Brighton Marina
• Queen Anne’s Battery
• Pendennis Marina

Dubai and the UAE

• Dubai Harbour
• Dubai Marina Yacht Club
• Port Rashid Marina
• Yas Marina
• Emirates Palace Marina
• Al Hamra Marina

Brazil

• Marina da Glória
• Marina Verolme
• Marina Itajaí
• BR Marinas
• Iate Clube de Santos
• Marina Piratas

Europe

• Marina Port Vell
• Port Adriano
• Puerto Banús
• Marina Ibiza
• Port Vauban
• Port de Saint-Tropez
• Marina Genova
• Porto Cervo Marina
• Flisvos Marina
• Alimos Marina
• ACI Marina Split
• ACI Marina Dubrovnik
• Porto Montenegro
• Marina Portorož

Cummins K50 Marine Engine

Cummins announced that it would showcase its market-ready K50 marine engine at Asia Pacific Maritime in Singapore on March 23, 2026. The launch expands the company’s high-horsepower offering for commercial marine customers.

Broad Commercial Propulsion Portfolio

Cummins’ 2026 marine range continues to cover compact, mid-range and high-horsepower propulsion, auxiliary and generator applications. Published models include the QSL9, QSM11, X15, QSK19, QSK38, QSK50, QSK60 and QSK95.

IMO III and EPA Tier 4 Solutions

Cummins offers selected QSK38 and QSK60 propulsion packages meeting EPA Tier 4 and IMO III requirements. These configurations use integrated engine and emissions-control technology for regulated commercial-vessel applications.

Alternative-Fuel Compatibility

Selected Cummins marine engines are designed or approved for alternative liquid fuels, subject to the exact engine model, fuel specification and regional requirements. For example, the B4.5 marine fuel system is designed for selected biodiesel and military-fuel applications.

Engine owners should always verify the approved fuel standard using the complete engine serial number before changing fuels.

Genuine and ReCon Parts Support

Cummins provides genuine new parts, ReCon remanufactured components, overhaul kits and bundled service parts. Genuine Cummins overhaul programmes can include pistons, rings, liners, bearings, gaskets, filters, cylinder heads, pumps, injectors and connecting rods.

Alfa Marine Spare Parts exports Cummins marine engine components to customers in:

• United States
• Canada
• United Kingdom
• Ireland
• Netherlands
• Belgium
• Germany
• France
• Spain
• Portugal
• Italy
• Greece
• Croatia
• Norway
• Sweden
• Denmark
• Finland
• Poland
• Turkey
• United Arab Emirates
• Saudi Arabia
• Qatar
• Oman
• Brazil
• Guyana
• Suriname
• Caribbean
• Singapore
• Malaysia
• Indonesia
• Philippines
• South Korea
• Japan
• Australia
• New Zealand
• South Africa
• Nigeria
• Ghana
• Angola

Customers choose Alfa Marine Spare Parts for:

• Genuine Cummins marine engine parts
• OEM-quality replacement components
• Cummins ReCon components
• Selected aftermarket alternatives
• Support for current and legacy engines
• Cummins B Series parts
• Cummins QSB and QSC parts
• Cummins QSL and QSM parts
• Cummins KTA and QSK components
• Marine propulsion parts
• Auxiliary-engine components
• Marine generator parts
• Technical parts identification
• Assistance with superseded part numbers
• Worldwide export experience
• Competitive quotations
• Fast delivery to ports and shipyards
• Routine maintenance parts
• Complete engine-overhaul components

Cummins engines are manufactured in many configurations for marine propulsion, generator sets, trucks, construction equipment, mining machinery, industrial systems and stationary power generation.

Two engines with the same basic model may use different components because of:

• Engine serial number
• CPL number
• Power rating
• Duty rating
• Rated speed
• Mechanical, PT or common-rail fuel system
• Turbocharger configuration
• Heat-exchanger or keel-cooling arrangement
• Emissions specification
• Propulsion or generator application
• Marine gearbox
• Control-module generation
• Regional specification

Before ordering, customers should provide:

• Complete Cummins engine model
• Eight-digit engine serial number
• CPL number
• Existing Cummins part number
• Engine data-plate photograph
• Propulsion, auxiliary or generator application
• Duty rating
• Rated speed
• Cooling-system configuration
• Turbocharger model
• Marine gearbox or generator model
• Photographs of the existing component
• Required quantity
• Delivery destination

Looking for Cummins 4BT, 6BT, 6BTA, 6CTA, QSB5.9, QSB6.7, QSC8.3, QSL9, QSM11, KTA19, QSK19, KTA38, QSK38, KTA50, QSK50, QSK60 or QSK95 marine parts?

Send Alfa Marine Spare Parts your:

• Complete engine model
• Eight-digit engine serial number
• CPL number
• Required part numbers
• Product descriptions
• Vessel or generator application
• Required quantities
• Clear photographs
• Delivery country and port

We supply genuine, OEM-quality, Cummins ReCon and selected aftermarket components for routine servicing, emergency repairs, commercial propulsion, yacht engines, auxiliary engines, marine generator sets and complete engine overhauls.

Alfa Marine Spare Parts – Your Worldwide Supplier of Cummins Marine Engine Spare Parts.

Do you supply Cummins marine engine parts?

Yes. Alfa Marine Spare Parts supplies genuine, OEM-quality, Cummins ReCon and selected aftermarket parts for Cummins marine propulsion, auxiliary and generator engines.

Which Cummins marine engines do you support?

We supply selected components for:

• Cummins 4BT and 4BTA
• Cummins 6BT and 6BTA
• Cummins 6CT and 6CTA
• Cummins QSB5.9
• Cummins QSB6.7
• Cummins QSC8.3
• Cummins QSL9
• Cummins QSM11
• Cummins M11
• Cummins X15
• Cummins KTA19 and QSK19
• Cummins VTA28
• Cummins KTA38 and QSK38
• Cummins KTA50 and QSK50
• Cummins QSK60
• Cummins QSK95

Availability depends on the complete engine model, serial number and required component.

Do you supply Cummins 6BT and 6BTA marine parts?

Yes. We can source injectors, injection pumps, turbochargers, seawater pumps, heat exchangers, oil coolers, cylinder heads, pistons, bearings, gasket kits and overhaul components for many 6BT and 6BTA marine engines.

Do you supply Cummins QSB6.7 marine parts?

Yes. We supply selected common-rail injectors, high-pressure fuel pumps, turbochargers, seawater pumps, cooling components, sensors, cylinder heads, pistons, bearings, gaskets and overhaul parts for QSB6.7 engines.

Do you supply Cummins QSM11 parts?

Yes. We can source selected injectors, fuel-system components, turbochargers, water pumps, heat exchangers, aftercooler parts, sensors, cylinder heads and overhaul components for QSM11 engines.

Do you supply Cummins KTA38 and QSK38 parts?

Yes. We supply selected fuel-system, turbocharger, cooling-system, cylinder-head, piston, liner, bearing, sensor, gasket and overhaul components for KTA38 and QSK38 engines.

Do you supply Cummins marine generator parts?

Yes. We supply filters, injectors, fuel pumps, turbochargers, cooling components, starters, alternators, sensors, gasket kits and overhaul components for Cummins-powered marine generator installations.

Can you identify Cummins parts using the engine serial number?

Yes. Send the complete engine model, eight-digit engine serial number, CPL number, existing part number and a clear photograph of the engine data plate.

Do you ship Cummins marine parts worldwide?

Yes. We arrange international delivery to shipowners, fishing fleets, yacht operators, shipyards, ports, workshops, ferry companies, offshore operators and marine generator specialists worldwide.

Can you supply complete Cummins overhaul kits?

Depending on the engine model and serial-number range, we can source pistons, rings, liners, bearings, cylinder heads, injectors, pumps, gasket sets and other complete engine-rebuild components.