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Bosch

Bosch

Alfa Marine Spare Parts supplies genuine, OEM-quality, remanufactured, and selected replacement Bosch marine engine parts for diesel propulsion engines, auxiliary engines, marine generator sets, offshore equipment, hydraulic systems, and commercial vessel applications.

Bosch Marine Parts, Fuel-Injection Systems & Components

Alfa Marine Spare Parts supplies genuine, OEM-quality, remanufactured, and selected replacement Bosch marine engine parts for diesel propulsion engines, auxiliary engines, marine generator sets, offshore equipment, hydraulic systems, and commercial vessel applications.

Our Bosch marine product range includes:

  • Bosch marine fuel injectors
  • Common-rail injectors
  • Mechanical injector nozzles
  • Unit injectors
  • Unit pumps
  • High-pressure fuel pumps
  • Inline injection pumps
  • Distributor injection pumps
  • PF injection pumps
  • Common-rail components
  • Fuel-pressure sensors
  • Engine-control units
  • Starter motors
  • Alternators
  • Fuel filters
  • Oil filters
  • Air filters
  • Bosch Rexroth hydraulic pumps
  • Hydraulic motors
  • Marine control valves
  • Drive and control components

We support shipowners, fleet operators, shipyards, marine workshops, diesel specialists, generator companies, offshore operators, and engine rebuilders with Bosch components for routine maintenance, fuel-system repairs, component replacement, injector testing, and engine overhaul projects.

Bosch Marine Engine Parts

Bosch is not primarily a manufacturer of complete marine engines. Instead, the company develops and manufactures components and systems used on diesel, gas, dual-fuel, and alternative-fuel engines.

Bosch technologies can be found in:

  • Marine propulsion engines
  • Auxiliary diesel engines
  • Marine generator engines
  • Commercial fishing-vessel engines
  • Tugboat engines
  • Yacht engines
  • Ferry propulsion systems
  • Offshore power equipment
  • Dredging equipment
  • Harbour machinery
  • Hydraulic deck systems
  • Stationary generator sets
  • Large industrial engines

Bosch’s large-engine portfolio includes electronically controlled injection systems, mechanical injection equipment, common-rail components, gas-admission valves, alternative-fuel injectors, and electronic engine-management systems.

Bosch Diesel Fuel-Injection Systems

Diesel fuel-injection equipment is one of the most important Bosch product categories for marine-engine maintenance.

Bosch fuel systems are designed to meter and deliver fuel at the correct pressure and injection timing. Depending on the engine generation, the installed system may be:

  • Mechanical fuel injection
  • Inline pump injection
  • Distributor-pump injection
  • Individual PF pump injection
  • Unit pump injection
  • Unit injector injection
  • Common-rail injection
  • Dual-fuel injection
  • Gas-admission injection
  • Alternative-fuel injection

The correct Bosch component must be identified using the complete Bosch reference number, engine model, engine serial number, fuel-system type, and injector calibration information.

Bosch Common-Rail Marine Components

Common-rail systems use a high-pressure pump to supply fuel to a rail, which distributes fuel to electronically controlled injectors.

Bosch common-rail parts can include:

  • Common-rail fuel injectors
  • CRIN injectors
  • Injector nozzles
  • Injector control valves
  • Injector repair kits
  • Injector seal kits
  • High-pressure fuel pumps
  • Pump metering valves
  • Common rails
  • Rail-pressure sensors
  • Pressure-limiting valves
  • High-pressure fuel pipes
  • Fuel-return lines
  • Electronic control units
  • Wiring connectors

Bosch aftermarket documentation divides its common-rail range into high-pressure pumps, rails, injectors, injector repair parts, pump components, and related pressure-control products.

Typical applications include:

  • Modern yacht engines
  • Commercial workboat engines
  • Patrol-vessel engines
  • Passenger craft
  • Marine generator sets
  • Electronically controlled industrial engines
  • Offshore equipment
  • Bosch marine common-rail injector
  • Bosch CRIN injector marine engine
  • Bosch marine high-pressure fuel pump
  • Bosch common-rail pump parts
  • Bosch marine injector repair kit
  • Bosch rail-pressure sensor
  • Bosch diesel injector supplier

Bosch Mechanical Fuel-Injection Parts

Many older marine engines continue to use mechanically controlled fuel-injection systems.

Bosch mechanical diesel components include:

  • Inline fuel-injection pumps
  • Distributor injection pumps
  • PF individual injection pumps
  • Pump elements
  • Delivery valves
  • Camshaft components
  • Governor components
  • Mechanical injectors
  • Injector nozzles
  • Nozzle holders
  • Hand-priming pumps
  • Fuel lift pumps
  • Overflow valves
  • Stop-solenoid components
  • Pump gasket kits

Bosch’s PF pump is designed for single-cylinder pump systems used on large engines. Bosch states that the system can reach injection pressures of up to 1,800 bar and is designed for long operating periods in demanding applications.

Typical applications include:

  • Older marine propulsion engines
  • Commercial fishing vessels
  • Tugboats
  • Workboats
  • Classic yachts
  • Marine generator sets
  • Mechanically governed auxiliary engines
  • Large industrial engines
  • Bosch marine injection pump
  • Bosch PF pump marine engine
  • Bosch injector nozzle marine diesel
  • Bosch inline fuel-pump parts
  • Bosch marine pump element
  • Bosch delivery valve
  • Bosch mechanical diesel injector

Bosch Unit Pump and Unit Injector Systems

Bosch produces both unit pump systems and unit injector systems.

In a unit pump system, each cylinder has an electronically controlled high-pressure pump connected to a nozzle holder by a high-pressure pipe.

In a unit injector system, the high-pressure pump and injector nozzle are combined into a single cylinder-head-mounted unit. Bosch describes these systems as robust solutions capable of injection pressures reaching approximately 1,800 bar.

Bosch unit-injection products include:

  • Complete unit injectors
  • Unit pumps
  • Injector nozzles
  • Solenoid valves
  • Control-valve components
  • Injector seals
  • Wiring connectors
  • High-pressure pipes
  • Unit-pump tappets
  • Repair kits

Typical applications include:

  • Commercial diesel engines
  • Marine generator engines
  • Heavy-duty auxiliary engines
  • Workboats
  • Industrial power systems
  • Offshore equipment

Bosch Fuel Injectors and Injector Nozzles

Fuel injectors are among the most frequently requested Bosch engine components.

Alfa Marine Spare Parts can assist with sourcing:

  • New Bosch fuel injectors
  • Genuine Bosch injectors
  • Bosch exchange injectors
  • Remanufactured Bosch injectors
  • Common-rail injectors
  • Mechanical injectors
  • Unit injectors
  • Pilot-fuel injectors
  • Injector nozzles
  • Injector control valves
  • Injector seal kits
  • Injector repair components

Before ordering a Bosch injector, customers should provide:

  • Complete Bosch part number
  • Number shown on the injector body
  • Complete engine model
  • Engine serial number
  • Injector calibration or classification code
  • Cylinder quantity
  • Photograph of the injector
  • New or remanufactured preference

A Bosch injector with a similar appearance is not necessarily interchangeable. Different spray patterns, nozzle opening pressures, flow rates, electrical characteristics, and calibration codes may be used within the same engine family.

Bosch High-Pressure Fuel Pumps

Bosch high-pressure pumps are used in common-rail diesel systems to produce and regulate fuel pressure.

Common replacement categories include:

  • Complete high-pressure fuel pumps
  • Pump heads
  • Pump elements
  • Metering units
  • Suction-control valves
  • Pressure-control valves
  • Drive couplings
  • Shaft seals
  • Pump gasket kits
  • Fuel-temperature sensors
  • Pump mounting parts

Typical problems associated with high-pressure pumps include:

  • Low rail pressure
  • Hard starting
  • Power loss
  • Metallic contamination
  • Fuel leakage
  • Unstable engine speed
  • Engine-control fault codes
  • Excessive return flow

The fuel system should be inspected for contamination before a replacement pump is installed. Metal particles from a failed pump can damage the rail, injectors, control valves, and high-pressure pipes.

Bosch Large-Engine Control Units

Bosch develops electronic engine-management systems for large diesel, gas, and dual-fuel engines.

The Bosch MD1CE200-LE is designed as a central engine-control unit for large engines. Bosch states that it can control fuel supply, fuel injection, and air management while communicating with the vessel’s or equipment’s higher-level control system.

Bosch engine-control and electronic components can include:

  • Engine-control units
  • Injector drivers
  • Fuel-control modules
  • Rail-pressure sensors
  • Boost-pressure sensors
  • Crankshaft sensors
  • Camshaft sensors
  • Temperature sensors
  • Knock sensors
  • Wiring connectors
  • Actuators
  • Solenoid valves
  • Communication interfaces

Typical applications include:

  • Large marine diesel engines
  • Dual-fuel engines
  • Gas engines
  • Marine generator installations
  • Offshore power systems
  • Stationary power generation

Bosch Sensors for Marine Engines

Modern diesel engines depend on accurate sensor information for fuel delivery, turbocharger control, emissions management, safety monitoring, and engine protection.

Bosch marine-related sensor categories include:

  • Fuel-pressure sensors
  • Rail-pressure sensors
  • Oil-pressure sensors
  • Coolant-temperature sensors
  • Intake-air temperature sensors
  • Boost-pressure sensors
  • Crankshaft-position sensors
  • Camshaft-position sensors
  • Speed sensors
  • Exhaust-temperature sensors
  • Differential-pressure sensors
  • NOx sensors
  • Oxygen sensors
  • Fuel-temperature sensors

Incorrect sensor identification can cause installation problems or inaccurate engine readings. Customers should provide the complete Bosch number and connector photographs before ordering.

Bosch Starters and Alternators

Bosch starter motors and alternators are used on many diesel engines, generator sets, and auxiliary installations.

Available product categories include:

  • Starter motors
  • Starter solenoids
  • Starter drives
  • Starter relays
  • Alternators
  • Voltage regulators
  • Rectifiers
  • Bearings
  • Brush holders
  • Pulley assemblies
  • Remanufactured electrical units

Typical applications include:

  • Marine propulsion engines
  • Yacht engines
  • Marine generator sets
  • Emergency generators
  • Hydraulic power units
  • Pumps and deck machinery

Important identification information includes:

  • Bosch electrical part number
  • Voltage
  • Amperage
  • Rotation direction
  • Mounting arrangement
  • Number of gear teeth
  • Pulley type
  • Engine model
  • Existing unit photographs

Bosch Marine Filters

Bosch supplies diesel, oil, and air filters for heavy-duty engine applications.

Bosch states that its diesel filters are designed to separate water and particles from fuel, helping protect the injection system. Its oil filters protect engine components, including the turbocharger, from contaminants in the lubricating oil.

Bosch filter categories include:

  • Diesel fuel filters
  • Primary fuel filters
  • Secondary fuel filters
  • Fuel-water separators
  • Oil filters
  • Air filters
  • Filter elements
  • Filter housings

Typical applications include:

  • Marine diesel engines
  • Auxiliary engines
  • Generator sets
  • Commercial vessels
  • Workboats
  • Offshore equipment

Bosch Alternative-Fuel Injectors

Bosch is developing injection equipment for large engines operating on lower-carbon or alternative fuels.

The Bosch alternative-fuel injector is intended for large-engine applications such as marine engines and stationary generator sets. Bosch states that it can be configured for port-fuel or direct injection and can support a broad power range.

Potential fuel applications include:

  • Methanol
  • Ethanol
  • Hydrogen
  • Natural gas
  • Alternative gaseous fuels
  • Dual-fuel operation

Related products may include:

  • Alternative-fuel injectors
  • Gas-admission valves
  • Gas rails
  • Pressure sensors
  • Temperature sensors
  • Control valves
  • Electronic engine-control units
  • Fuel-compatible seals

Alternative-fuel components require specialist engineering, approved installation procedures, and verification for the specific engine and fuel.

Bosch Gas and Dual-Fuel Injection Components

Bosch offers injection technologies for gas and dual-fuel large-engine applications.

Product categories include:

  • Gas-admission valves
  • Dual-fuel injection systems
  • Pilot-fuel injectors
  • Gas-pressure control components
  • Fuel rails
  • Gas-control valves
  • Engine-management systems
  • Sensors and actuators

Bosch’s large-engine gas-admission valve is designed to meter gaseous fuel into the intake manifold and create an accurately controlled air-and-gas mixture.

Typical applications include:

  • Dual-fuel marine engines
  • LNG-powered vessels
  • Gas generator sets
  • Stationary gas engines
  • Alternative-fuel research projects

Bosch Hydrogen Injection Technology

Bosch is developing hydrogen fuel-injection components for combustion engines.

Its port-fuel injection system is designed for hydrogen-engine applications and is intended to support both new engine development and selected retrofit concepts.

Potential product categories include:

  • Hydrogen fuel injectors
  • Hydrogen injection rails
  • Pressure sensors
  • Temperature sensors
  • Control valves
  • Engine-management components
  • Fuel-compatible connectors and seals

Marine use requires approval for the complete engine, vessel fuel system, classification requirements, safety systems, and storage arrangement.

Bosch Rexroth Marine Hydraulic Systems

Bosch Rexroth supplies hydraulic drive and control technology for marine, offshore, subsea, and port-equipment applications.

Bosch Rexroth states that its marine and land systems are designed for demanding applications and long operating life with suitable maintenance and lifecycle management.

Bosch Rexroth marine product categories include:

  • Hydraulic pumps
  • Hydraulic motors
  • Hydraulic power units
  • Control valves
  • Directional valves
  • Proportional valves
  • Pressure-control valves
  • Flow-control valves
  • Hydraulic cylinders
  • Manifolds
  • Accumulators
  • Electronic controls
  • Drive systems
  • Winch-control systems
  • Steering-control systems
  • Subsea actuators

Typical applications include:

  • Steering systems
  • Deck cranes
  • Anchor-handling winches
  • Towing winches
  • Dredging equipment
  • Hatch-cover systems
  • Stabilizer systems
  • Offshore lifting equipment
  • Subsea systems
  • Propulsion-support systems
  • Hydraulic power packs
  • Port and container-handling equipment

Bosch Rexroth states that it has supplied drive and control technology for ships and offshore platforms for more than 50 years.

Bosch Rexroth Hydraulic Pumps

Bosch Rexroth hydraulic pumps are used in marine and offshore hydraulic power systems.

Common pump categories include:

  • Axial-piston pumps
  • Variable-displacement pumps
  • Fixed-displacement pumps
  • Gear pumps
  • Radial-piston pumps
  • Pump combinations
  • Closed-circuit pumps
  • Open-circuit pumps

Bosch Rexroth identifies marine and offshore technology among the industries served by its hydraulic-pump portfolio.

Frequently requested components include:

  • Complete hydraulic pumps
  • Rotating groups
  • Cylinder blocks
  • Pistons
  • Valve plates
  • Shaft seals
  • Bearings
  • Control units
  • Pressure compensators
  • Gasket kits
  • Couplings
  • Mounting flanges

Bosch Rexroth Hydraulic Motors

Marine hydraulic motors may be used for:

  • Winches
  • Cranes
  • Propulsion-support equipment
  • Dredging pumps
  • Anchor-handling systems
  • Towing systems
  • Deck machinery
  • Thruster-support systems
  • Offshore lifting equipment

Frequently requested products include:

  • Complete hydraulic motors
  • Drive shafts
  • Bearings
  • Rotating groups
  • Control blocks
  • Brake assemblies
  • Seal kits
  • Flushing valves
  • Speed sensors

The complete Rexroth model code is essential because hydraulic products can have different displacement, pressure rating, shaft, rotation, control, port, and mounting specifications.

Bosch Marine Parts Categories

Diesel Fuel-System Parts

  • Common-rail injectors
  • Mechanical injectors
  • Unit injectors
  • Injector nozzles
  • Injector control valves
  • Injector seals
  • High-pressure fuel pumps
  • Inline injection pumps
  • Distributor pumps
  • PF pumps
  • Unit pumps
  • Pump elements
  • Delivery valves
  • Fuel lift pumps
  • Metering valves
  • Fuel-pressure regulators
  • Fuel rails
  • High-pressure fuel pipes

Electronic and Sensor Parts

  • Engine-control units
  • Injector drivers
  • Rail-pressure sensors
  • Oil-pressure sensors
  • Temperature sensors
  • Boost-pressure sensors
  • Speed sensors
  • Crankshaft sensors
  • Camshaft sensors
  • NOx sensors
  • Exhaust-temperature sensors
  • Wiring connectors
  • Solenoids
  • Actuators

Electrical Parts

  • Starter motors
  • Alternators
  • Starter solenoids
  • Voltage regulators
  • Rectifiers
  • Starter drives
  • Bearings
  • Brush holders
  • Electrical repair kits

Filter Parts

  • Fuel filters
  • Diesel filter elements
  • Fuel-water separators
  • Oil filters
  • Air filters
  • Filter housings
  • Filter-head components

Alternative-Fuel Components

  • Gas-admission valves
  • Dual-fuel injectors
  • Alternative-fuel injectors
  • Hydrogen injectors
  • Pilot-fuel components
  • Gas rails
  • Pressure sensors
  • Fuel-control valves
  • Compatible seals

Bosch Rexroth Hydraulic Parts

  • Hydraulic pumps
  • Hydraulic motors
  • Hydraulic cylinders
  • Control valves
  • Pump control units
  • Pressure regulators
  • Hydraulic manifolds
  • Accumulators
  • Seal kits
  • Rotating groups
  • Valve plates
  • Hydraulic power units

Fast-Moving Bosch Marine Parts

Frequently requested Bosch marine and heavy-duty diesel products include:

  • Bosch common-rail injectors
  • Bosch CRIN injectors
  • Bosch injector nozzles
  • Bosch injector repair kits
  • Bosch high-pressure fuel pumps
  • Bosch pump metering valves
  • Bosch rail-pressure sensors
  • Bosch unit injectors
  • Bosch unit pumps
  • Bosch PF pumps
  • Bosch pump elements
  • Bosch delivery valves
  • Bosch starter motors
  • Bosch alternators
  • Bosch fuel filters
  • Bosch oil filters
  • Bosch engine sensors
  • Bosch Rexroth hydraulic pumps
  • Bosch Rexroth hydraulic motors
  • Bosch Rexroth seal kits

Engines That May Use Bosch Components

Bosch components are used across many diesel-engine and equipment platforms. However, Alfa Marine Spare Parts should not claim that every model from a particular engine brand uses Bosch equipment.

Bosch components may be found on selected:

  • European marine diesel engines
  • German high-speed engines
  • Scandinavian marine engines
  • Commercial propulsion engines
  • Yacht engines
  • Marine generator engines
  • Industrial engines converted for marine use
  • Offshore power equipment
  • Hydraulic deck systems

Compatibility must be confirmed using the Bosch part number and engine serial number.

Useful SEO combinations include:

  • Bosch injector for marine diesel engine
  • Bosch fuel pump for yacht engine
  • Bosch common-rail parts for marine generator
  • Bosch injector nozzle for fishing-vessel engine
  • Bosch Rexroth pump for marine winch
  • Bosch marine starter motor
  • Bosch alternator for marine generator

Major Shipyards and Maritime Regions We Supply

Alfa Marine Spare Parts supplies Bosch fuel-system, electrical, electronic, and hydraulic components to customers operating near major ports, shipyards, offshore bases, marinas, and marine-service centres worldwide.

The companies below are geographical and industry references only. Their inclusion does not imply affiliation, authorization, or an official supply relationship.

United States

Marine-service and shipbuilding regions include:

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

Major shipbuilding and repair facilities include:

  • Huntington Ingalls Industries
  • General Dynamics NASSCO
  • Bath Iron Works
  • Fincantieri Marinette Marine
  • Austal USA
  • Bollinger Shipyards
  • Eastern Shipbuilding Group
  • Vigor Marine
  • Conrad Shipyard
  • Gulf Copper
  • Hanwha Philly Shipyard

Bosch Rexroth showcased marine and offshore hydraulic, subsea, and control technologies at the Offshore Technology Conference in Houston during 2025.

Canada

Important maritime regions include:

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

Major shipbuilding and repair groups include:

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

United Kingdom

Important marine-service regions include:

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

Major shipyards 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

Dubai and the United Arab Emirates

Important UAE maritime hubs include:

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

Major repair and shipbuilding facilities include:

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

Brazil

Important marine regions include:

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

Major shipbuilding and repair centres include:

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

Europe

Important European maritime centres include:

  • Rotterdam
  • Amsterdam
  • Hamburg
  • Bremen
  • Antwerp-Bruges
  • Barcelona
  • Valencia
  • Genoa
  • Marseille
  • Piraeus
  • Oslo
  • Bergen
  • Copenhagen
  • Gdańsk
  • Split

Major European shipbuilding and repair groups include:

  • Damen Shipyards
  • Royal IHC
  • Meyer Werft
  • Lürssen
  • Fincantieri
  • Chantiers de l’Atlantique
  • Naval Group
  • Navantia
  • Vard
  • Ulstein Verft
  • Remontowa
  • Astilleros Armón
  • Astilleros Gondán

Latest Bosch Marine and Offshore Developments

Alternative-Fuel Injection for Large Engines

Bosch continues to expand injection technology for large engines operating on gaseous and alternative fuels.

Its portfolio includes:

  • Gas-admission valves
  • Dual-fuel injection
  • Alternative-fuel injectors
  • Hydrogen port-fuel injection
  • Electronic engine-management systems

Bosch identifies marine and stationary generator engines among the target applications for its alternative-fuel injector.

Bosch Rexroth Offshore and Marine Technology

At OTC 2025, Bosch Rexroth presented offshore and marine solutions including hydraulic systems, drive technology, subsea equipment, and control products.

Bosch Rexroth and WITTENSTEIN also introduced the eSEA Spin subsea actuator in 2025. The electromechanical unit is designed for flow-control applications at water depths of up to approximately 4,000 metres.

Marine Drive Electrification

Bosch Rexroth publishes resources covering maritime drive electrification, hydraulic manifolds, connected hydraulics, and control systems for marine and land applications.

Hydrogen and Fuel-Cell Development

Bosch continues to invest in hydrogen fuel injection and fuel-cell technologies for heavy-duty transport and potential future maritime applications.

In November 2025, a Bosch team received the Deutscher Zukunftspreis for its fuel-cell power module work. Bosch identified heavy-duty transport as a key application area and also referenced maritime propulsion potential.

Worldwide Shipping for Bosch Marine Parts

Alfa Marine Spare Parts exports Bosch marine, diesel, electrical, electronic, and hydraulic 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

Why Choose Alfa Marine Spare Parts?

Customers choose Alfa Marine Spare Parts for:

  • Genuine Bosch diesel parts
  • OEM-quality Bosch components
  • Bosch exchange and remanufactured parts
  • Selected replacement alternatives
  • Bosch common-rail injectors
  • Bosch mechanical injection parts
  • Bosch fuel pumps
  • Bosch engine sensors
  • Bosch starters and alternators
  • Bosch filters
  • Bosch Rexroth hydraulic components
  • Technical part-number identification
  • Assistance with superseded references
  • Worldwide export service
  • Competitive quotations
  • Fast shipping to ports and shipyards

Important Bosch Part-Number Verification

Bosch manufactures thousands of components for marine, automotive, commercial-vehicle, industrial, generator, agricultural, construction, and stationary-engine applications.

Two Bosch parts with a similar appearance may have different:

  • Operating pressure
  • Fuel-delivery rate
  • Spray angle
  • Nozzle-hole configuration
  • Opening pressure
  • Electrical resistance
  • Calibration code
  • Connector
  • Rotation direction
  • Voltage
  • Mounting pattern
  • Hydraulic displacement
  • Control type

Before ordering, customers should provide:

  • Complete Bosch part number
  • All numbers shown on the component
  • Complete engine model
  • Engine serial number
  • Existing OEM part number
  • Injector calibration code
  • Pump model
  • Electrical voltage, when applicable
  • Hydraulic model code, when applicable
  • Clear photographs
  • Required quantity
  • Delivery destination

Request a Bosch Marine Parts Quotation

Looking for Bosch marine fuel injectors, injection pumps, common-rail components, sensors, starter motors, alternators, filters, or Bosch Rexroth hydraulic parts?

Send Alfa Marine Spare Parts your:

  • Complete Bosch part number
  • Engine model
  • Engine serial number
  • Existing OEM reference
  • Component description
  • Injector or pump code
  • Hydraulic model code
  • Required quantity
  • Photographs
  • Delivery country and port

We supply genuine, OEM-quality, remanufactured, and selected replacement Bosch products for marine propulsion engines, auxiliary engines, generator sets, hydraulic systems, offshore equipment, and commercial vessels.

Alfa Marine Spare Parts – Your Worldwide Supplier of Bosch Marine, Diesel and Hydraulic Components.

Frequently Asked Questions

Does Bosch manufacture complete marine engines?

Bosch is primarily a component and systems manufacturer rather than a supplier of a complete Bosch-branded marine-engine range.

Bosch supplies fuel-injection systems, control units, sensors, electrical products, alternative-fuel equipment, filters, and hydraulic systems used in marine and large-engine applications.

Do you supply Bosch marine fuel injectors?

Yes. Alfa Marine Spare Parts supplies selected genuine, remanufactured, and replacement Bosch injectors for marine propulsion and generator engines.

The Bosch number and complete engine serial number are required for accurate identification.

Do you supply Bosch common-rail parts?

Yes. We can source selected common-rail injectors, high-pressure pumps, metering valves, fuel rails, pressure sensors, control valves, seal kits, and high-pressure pipes.

Do you supply Bosch mechanical injection-pump parts?

Yes. We supply selected pump elements, delivery valves, injectors, nozzles, lift pumps, seals, gaskets, governors, and other components for Bosch mechanical fuel systems.

Do you supply Bosch Rexroth marine hydraulic parts?

Yes. We can assist with selected Bosch Rexroth hydraulic pumps, motors, valves, control units, seal kits, rotating groups, manifolds, and marine hydraulic components.

Can you identify a Bosch injector using its number?

Yes. Send every number shown on the injector, the complete engine model, engine serial number, injector calibration code, and clear photographs.

Do you supply remanufactured Bosch injectors and pumps?

Yes, subject to the exact reference and availability. Bosch-certified repair programmes use traceable repair identification for selected diesel components.

Do you supply Bosch starters and alternators?

Yes. We supply selected Bosch starter motors, alternators, solenoids, voltage regulators, rectifiers, and related electrical components.

Do you ship Bosch marine parts worldwide?

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