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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Mercedes W910 OM651 Engine Alternator Generator Bosch A6519065200

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BMW X3 E83 E46 E60 E61 E65 M54 Alternator Generator 150A 7521137

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

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BMW E46 Alternator Generator Diesel Engine M47N M57N 150A Lucas LRA02891

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

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Alternator Generator Mercedes W221 OM642 Diesel Engine 220A A0131540602 11304N

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

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Ford Transit Mk8 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BD

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

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Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002

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BMW E82 E90 E91 E92 N54 135i 335i Alternator Generator 180A 7558220

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Volkswagen Golf Sportsvan 1.5 TSI Alternator Valeo 14V 140A 04C903021A

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Mercedes W204 W207 W212 Alternator Generator Engine Diesel 180A 14V A0009067702

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Alternator Generator Mercedes W169 W245 Engine 115A 14V A2661540902

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Nissan Qashqai Renault Megane II Dacia Duster dCi Engine Alternator 820072829

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Nissan Qashqai J10 Renault Koleos 2.0 dCi Engine Alternator 23100JD71A

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Alternator Generator BMW F07 F10 F11 FN57N N57Z Diesel Engine Valeo 8570673

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BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608

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Mini R50 R52 Petrol W10 Compact Alternator Generator 105A 7515029

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Mercedes-Benz W169 W245 Alternator Generator Petrol 90A A2661540802

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Alternator Generator Mercedes W207 W212 OM642 Diesel Engine 200A A0009062722

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

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Alternator Volkswagen Crafter 2.0 TDI Engine Alternator 120A Bosch 028903028E

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Alternator Mini Cooper S R52 R53 Petrol W11 Compact Generator 105A 7515030

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Ford Transit Mk7 Engine Alternator Generator Unit Diesel AC1T10300BB

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Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023A

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Alternator Generator Peugeot 207 Diesel 12V Electrical Unit 9646321780

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Audi A4 B7 1.8 T BFB Petrol Engine Alternator Generator 06D903016AB

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BMW 3 5 X5 Series E39 E46 E53 3.0i M54 Generator Alternator 120A VALEO 7501593

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Ford Transit MK6 2.4 Diesel Engine Alternator Generator 4461712

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BMW F20 F21 F30 F31 LCI F32 F33 F34 Alternator Generator Unit 14V 190A 8645326

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Volkswagen Polo 6R Audi A1 8X Alternator Generator 14V 110A 04E903015A

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VW Volkswagen New Beetle 1.9 TDI BSW Diesel Alternator Generator 038903024F

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Audi A4 8K 2.0 TDI Diesel Engine Alternator Generator 04L903017E

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Volkswagen Polo 6N Alternator Generator BOSCH 14V 70A 028903025G

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BMW 1 3 E87 E90 E91 E92 M47N2 M57N2 Alternator Bosch Diesel 150A 0 986 080 580

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Jaguar XF250 3.0 306DT AJV6D Engine Alternator Generator 8X2310300CB

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

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BMW X5 E53 X3 E83 M57N2 Alternator Generator Diesel Engine Power 150A 7797661

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Audi A3 S3 8Y Engine Alternator Generator Electric Unit 14V 140A 06K903026C

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Audi A3 8P Engine Alternator Generator 14V 140A 1.8 TFSI CDAA 06H903017E

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BMW 5 6 7 Series E60 E61 E65 N62N Petrol Alternator Generator 180A 7542934

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Audi A7 S7 4G 4.0 TFSI Petrol Engine Alternator Generator 079903015P

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Alternator Audi A6 C6 3.0 TDI Diesel Engine Generator 059903015R 1068673

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Alternator Mercedes W212 Engine Generator 220A Valeo A0009063522

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BMW 1 3 5 Series E60 E61 E87 E90 E91 N52 Alternator Generator 155A 7543083

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Mercedes Vito Viano W639 Alternator Generator Diesel 200A A0131541002

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BMW X5 E53 3.0i Petrol M54 Alternator Valeo 140A 7551252

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Mini Cooper One D R50 W17 Alternator Generator 130A 7790879

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

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Alternator Generator Mercedes W177 W247 M260 Petrol Engine 200A 14V A0009068206

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Alternator Generator BMW X5 E53 E60 E61 E63 E65 N62 Petrol Engine 180A 7540992

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Alternator Mini R55 R56 R57 R57 R58 LCI Generator Petrol 7574365

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Audi Q7 4L Diesel Alternator Generator Engine Electrical Unit 059903018E

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Alternator Generator BMW E60 E63 E65 E83 LCI E90 Diesel 170A LRA02319

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Alternator BMW F20 LCI F30 Mini F56 F60 Alternator Generator DENSO 180A 7640132

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Seat Ibiza 6J Mk4 CFWA Diesel Engine Alternator Generator 14V 140A 03P903023B

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Ford Transit Mk8 Alternator Generator Unit 220A 2.0 Diesel Engine 6CIT-10300-BC

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Audi A1 8X 1.2 TFSI CBZA Petrol Engine Alternator Generator 04C903023L

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Alternator Cable BMW F21 F22 F30 LCI 125i 220i 228i 320i N20 Starter 8621490

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Audi A4 B8 2.0 TDI CNHC Diesel Alternator Generator 04L903017A

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

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Volkswagen Transporter LT 35 2.5 TDI Alternator Bracket Vw 074145169F

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

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Alternator Mercedes W212 W447 X253 C238 Petrol M274 150A Bosch A0009060922

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

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Alternator Mercedes W204 W207 OM651 14V 150A Engine Start/Stop A0009060401

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MINI Cooper One D R55 R56 Alternator Generator Diesel 150A 7794970

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Audi A4 B8 3.0 TDI CAPA Diesel Alternator 04L903017A

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Volkswagen Tiguan 5N Golf Mk5 Alternator Generator Diesel Power 03L903024M

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Volkswagen Golf Mk4 Alternator Generator BOSCH 14V 70A 028903028C

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BMW 5 7 E60 E61 E65 M57N M57N2 Compact Alternator Generator VALEO 170A 7802929

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

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Volkswagen Golf Mk8 Audi Q2 GA A3 8V 8Y 1.5 TSI Alternator 14V 140A 05E903026K

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Alternator Generator Mercedes W176 W246 Diesel Engine Bosch 175A A0009063822

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Seat Ateca FR 2.0 TDI Engine Alternator Generator Valeo 14V 140A 04L903021D

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Fiat Doblo Engine Alternator Generator 46774430

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BMW F45 i8 X2 F39 Mini Cooper F60 Alternator Generator B38 B38X Engine 7649390

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Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A A0009067900

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BMW F20 F21 F30 F31 LCI F32 F33 F34 Alternator Petrol Engine Unit 180A 8645325

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Audi A3 8V A4 A5 B8 Alternator Generator Electrical Unit Diesel 03L903023K

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

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Alternator Generator BMW F07 F10 N57N N57Z Diesel Engine 230A Valeo 8570672

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Showing 199-297 of 478 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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