What is the function of an alternator in a car?

An alternator is a device that converts mechanical energy from the engine's crankshaft into electrical current that powers the car's systems and charges the battery.

What is the difference between an alternator and a generator?

A generator is the general term for a device that produces electricity. An alternator is a specific type of AC generator used in cars.

What does the term "compact alternator" mean?

A compact alternator is reduced in size and weight while maintaining the same power output. It is often used in newer generation cars.

What are the symptoms of a faulty alternator?

The most common include: battery light on, flashing lights, bearing noise, and voltage drops.

Are used alternators a good choice?

Yes, alternators used from a reliable source are an economical and ecological solution that allows you to reduce operating costs.

How do I check if the alternator will fit my car?

It is best to use the VIN number or compare the OEM part number – this guarantees full compatibility.

How much current should a functioning alternator generate?

A standard alternator in a passenger car should maintain a voltage of 13.8–14.4 V at a current of up to 150 A.

Alternators and generators

At Global Parts, we offer a wide selection of original used car parts, including alternators and generators for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Our alternators and generators undergo quality control to ensure you receive a top-quality product.

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Part no. A0009061903

Mercedes W176 W242 W246 Alternator Generator Bosch M270 Petrol A0009061903

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Alternator BMW E90 E81 E87 E85 Petrol Engine N45 N46 Alternator 150A 7533270

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BMW F30 F32 LCI N57N N57Z Diesel Engine Alternator Generator 230A Valeo 8570675

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Alternator Generator Mercedes Vito W639 Sprinter W906 14V 180A Valeo A6461541102

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Alternator Mercedes W212 Engine Generator 220A Valeo A0009063522

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Alternator BMW G11 G12 LCI G20 G21 G30 G31 Alternator 250A Denso 8634167

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Alternator Mercedes W212 S212 Diesel OM651 Alternator 220A Valeo A0009063705

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BMW E60 E61 E81 E87 LCI E90 E91 E92 E93 Alternator Petrol 180A 7550469

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Alternator Generator Mercedes Vito W639 Sprinter W906 14V 180A Valeo A6461541102

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High Voltage Inverter BMW i3 I01 Hybrid 120Ah Rex Electrical Machine 8488548

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Alternator Generator Mercedes W415 OM607 Diesel Engine 150A 14V 231004554R

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Ford Focus Diesel Engine Alternator Generator Engine Unit 8V21-10300-AB

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Renault Trafic Vauxhall Vivaro 1.6 dCi Diesel Alternator Generator 231008633R

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Alternator Generator Peugeot 207 Diesel 12V Electrical Unit 9646321780

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Ford Transit Mk7 Diesel Engine Alternator Generator Unit 6C1T-10300-CC

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Mercedes W903 Diesel Engine Alternator Generator 45-90A 14V A0101540802

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Ford Focus Mondeo Diesel Engine Alternator Generator Engine Unit 6G9N-10300-UD

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Land Rover Range Sport L320 Diesel Engine Alternator Generator AH22-10300-AB

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Land Rover Range Rover L322 3.0d M57 Engine Alternator Generator YLE000051

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Land Rover Range Rover L322 3.0d M57 Engine Alternator Generator YLE500180

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Alternator Generator Mercedes W169 W245 OM640 Diesel Engine 150A 14V A6401540402

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Ford Transit MK6 2.4 Diesel Engine Alternator Generator 4461712

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Renault Trafic Vauxhall Vivaro 2.0 DCI Diesel Alternator Generator 231001423R

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Alternator Generator Mercedes W203 W209 M271 Engine Valeo 120A 14V A2711540902

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Ford Transit Heat Shield Insulation Alternator Engine Cover CC11-199049-AA

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Alternator Generator Mercedes Sprinter W906 Engine Diesel 180A 14V A0009068802

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Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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Alternator BMW E53 E83 M57N2 Generator Diesel Engine Power 150A 7797661

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Audi A4 B8 2.0 TDI Alternator Generator 03G903016G

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Renault Trafic II 2.0 DCI Master III 2.3 DCI Alternator Plate Cover 231769503R

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Renault Trafic II Vauxhall Vivaro A 2.0 DCI Alternator Generator 8200404459G

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Volkswagen Golf 5 Audi A3 8P 1.9 2.0 TDI Engine Alternator Generator 06F903023F

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Land Rover Freelander 2 L359 2.2 Engine Alternator Generator 6G9N10300YC

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Alternator Generator Mercedes W204 W212 M271 Engine Valeo 150A 14V A0009063000

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Mercedes W910 OM651 Engine Alternator Generator Bosch A6519065200

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Ford Transit Mk7 Diesel Engine Alternator Generator Unit 6C1T-10300-CD

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Alternator Motor BMW F20 F21 LCI B37 Diesel Engine Alternator 180A 8626086

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Renault Master Laguna 2 Opel Movano A Engine Alternator 14V 150A 8200660022

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Ford Transit Mk7 Engine Alternator Generator Unit Diesel AC1T10300BB

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BMW F10 M5 F06 F12 F13 M6 S63N Engine Alternator Generator 14V 210A 7606628

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Ford Transit Mk7 Diesel Engine Alternator Generator Unit 6C1T-10300-CC

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Alternator Generator Mercedes W164 OM642 180A Electrical Unit Diesel A6421540502

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Alternator Generator Mercedes W211 CLS C219 OM642 Diesel 14V 180A A0131547002

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Audi A4 B7 Alternator Generator 2.0 TDI BRE Engine 06F903023J

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Mini R50 R52 Petrol W10 Compact Alternator Generator 105A 7515029

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Showing 397-455 of 455 products

Efficient alternators and generators – reliable power source for your vehicle

A wide range of alternators and generators – tailored to various car models

Alternators and generators are key components of a vehicle's electrical system, responsible for generating the electricity needed to power all vehicle systems and charge the battery. Their proper operation ensures voltage stability, the reliability of electrical devices, and the comfort of vehicle operation. At the Global Parts automotive store , you'll find a wide selection of used car parts , including alternators and generators, perfectly matched to brands such as BMW , Audi , and more. Mercedes , Volkswagen , Mini and others.

Types of alternators and generators

Alternators are divided into classic and compact types. Compact alternators are smaller, lighter, and often used in modern cars, where space and weight reduction are key. Generators used in heavier vehicles, such as delivery vans or off-road vehicles, are more powerful to meet higher energy demands. Typical alternator output in passenger cars is between 70 and 150 amps, while in heavy-duty vehicles, it can reach up to 200 and 300 amps .

What functions do alternators and generators perform?

Alternators and generators play a key role in the functioning of a vehicle's electrical system:

Generating Electricity – Converts mechanical energy into electrical energy that powers all vehicle systems.
Battery Charging – Provides a constant supply of power, keeping the battery fully charged.
Voltage regulation – Built-in voltage regulators maintain stable voltage, protecting electrical devices from damage.
Support for electrical systems – They power lighting, air conditioning, radios and other devices, ensuring their uninterrupted operation.

Table – typical symptoms and parameters of alternators

Symptom	Possible cause	Technical parameter
Poor battery charging	Worn out voltage regulator	Operating voltage: 13.8–14.4 V
Squeaking noises when the engine is running	Damaged drive belt	Power consumption: 1.5–2.5 kW
Flickering lights	Incorrect voltage stabilization	Current: 90–150 A (passenger)
No charging	Rotor or diode bridge failure	Power: 1.2–3.0 kW

Why is it worth taking care of alternators and generators ?

A damaged or malfunctioning alternator or generator can lead to power issues and shorten the life of the battery. Typical symptoms include:

Discharged battery – May be due to faulty charging.
Battery light on dashboard – Indicates problems with the alternator or generator.
Unusual noises – Squeaks or grinding sounds may indicate worn bearings or drive belt.
Voltage fluctuations – May indicate problems with the voltage regulator. If you need a replacement, you'll find the right used car parts at Global Parts that will restore the full functionality of your electrical system.

How to choose the right alternators and generators ?

When choosing alternators and generators, there are several key aspects to consider:

Vehicle-specific fit – Every electrical system has its own specific technical requirements. At Global Parts, you'll find alternators and generators perfectly matched to BMW, Audi, Mercedes, Volkswagen, Mini , and more .
Technical condition – Used alternators and generators should be fully functional, free from mechanical and electrical damage.
Type and Capacity – Make sure the alternator or generator you choose has the correct power and voltage to meet your vehicle’s requirements.

Compatibility and fit

When choosing an alternator, it's important to match not only the vehicle brand but also the specific engine version. For example, the alternator in a BMW 320d (E90) differs in parameters from the alternator in a BMW 318i (E46), even though both models belong to the same 3 Series. Therefore, filtering parts catalogs by VIN or OEM specification is crucial. This ensures compatibility with the vehicle's electrical system and avoids installation issues.

Why choose used alternators and generators ?

Used car parts, such as used alternators and generators, are an economical solution that allows you to save money while maintaining high quality. By choosing used electrical components, you benefit from:

Lower costs – Used alternators and generators are much cheaper than new ones, but offer just as high quality.
Ecology – Recycling parts supports environmental protection and reduces waste.
A wide range of products – In our store you will find used alternators and generators to the most popular car brands.

How to take care of alternators and generators ?

To ensure that alternators and generators operate reliably for a long time, it is worth following a few rules:

Regular inspections – Check the condition of the alternator and generator during technical inspections.
Maintain your drive belt – Make sure the belt is properly tensioned and shows no signs of wear.
Cleaning and maintenance – Regularly remove dirt and check the condition of electrical connections.
Avoid overloads – Too many electrical devices connected at once can overload the system. If you need a replacement, you will find the right car parts at Global Parts that will ensure the durability and efficiency of your electrical system.

FAQ - Frequently asked questions about alternators and generators

Question	Answer
What is the function of an alternator in a car?	An alternator is a device that converts mechanical energy from the engine's crankshaft into electrical current that powers the car's systems and charges the battery.
What is the difference between an alternator and a generator?	A generator is the general term for a device that produces electricity. An alternator is a specific type of AC generator used in cars.
What does the term "compact alternator" mean?	A compact alternator is reduced in size and weight while maintaining the same power output. It is often used in newer generation cars.
What are the symptoms of a faulty alternator?	The most common include: battery light on, flashing lights, bearing noise, and voltage drops.
Are used alternators a good choice?	Yes, alternators used from a reliable source are an economical and ecological solution that allows you to reduce operating costs.
How do I check if the alternator will fit my car?	It is best to use the VIN number or compare the OEM part number – this guarantees full compatibility.
How much current should a functioning alternator generate?	A standard alternator in a passenger car should maintain a voltage of 13.8–14.4 V at a current of up to 150 A.

Summary: Alternators and Generators at Global Parts Automotive Store

Alternators and generators are essential components of the electrical system, ensuring reliable power and the proper operation of all vehicle systems. By maintaining their technical condition, you can avoid power problems and extend the life of the entire electrical system. The Global Parts automotive store invites you to browse our wide selection of original used car parts . Whether you're looking for car parts for BMW , Audi , Volkswagen , Mercedes, Mini , and more, you'll find them at competitive prices. We strive to ensure every customer finds the right parts for their car, and if you have any questions or concerns about selecting the right components, we're happy to help! Please contact us – we're here to help! For more information and interesting facts, visit our automotive blog .

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