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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Renault Trafic II Alternator Generator 120A SG12B050 8200690199

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BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

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Ford Galaxy MK3 Mondeo MK4 2.0 TDCi Diesel Engine Alternator AG9T-10300-AA

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

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

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BMW 3 X5 Series E46 E53 3.0d Diesel M57 Alternator Generator 150A 2248296

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Mini Cooper One R55 R56 R57 Engine Alternator Generator Petrol 120A

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Mercedes-Benz W203 M111 C 200 230 K Bosch Alternator Generator A0111547202

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

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Mercedes W168 Alternator Generator A0121544502

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BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967

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

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Mini Cooper One R50 R52 Petrol W10 Compact Alternator RTX 7515029

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Audi Q3 8U Petrol Alternator Generator 14V 140A 06J903023B

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Audi A4 B8 2.0 TDI Alternator Generator 03G903016EX

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BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608

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Vauxhall Corsa D 1.3 CDTi Alternator Generator Electrical Unit 101210-0961

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Engine Alternator BMW F20 F21 F30 LCI Generator Lucas 170A N13 Petrol 7605060

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Audi SQ5 8R 3.0 TDI CGQB Diesel Engine Alternator Generator 059903018Q

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Alternator Generator Mercedes W204 W207 Petrol Engine Bosch 150A A0009062003

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Mercedes R170 Alternator Generator M111 Petrol Engine 90A A0091547602

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Audi A6 C6 2.0 TDI Alternator Generator 180A 14V Diesel Engine Unit 03G903016N

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Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F

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Alternator Generator BMW F10 F11 F20 F21 F30 F31 N55 Denso 14V 210A 7616119

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Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

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Citroen Relay Jumper 35L Alternator Bracket Belt Tensioner Holder 9807162780

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Fiat Doblo 1.6 Diesel Alternator Generator Denso 120A 14V 51854902

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Mercedes Sprinter W907 Alternator Generator Engine Diesel 250A 14V A0009068302

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Mercedes W447 OM622 Diesel Engine Alternator Generator A0009064022

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Part no. 04C903023L

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

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Part no. A0009060903

Alternator Mercedes W166 W213 C292 OM651 Generator 14V 250A A0009060903

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Part no. 059903018K

Audi Q7 4L Quattro Diesel 3.0 TDI ALternator Generator 180A Bosch 059903018K

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

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

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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator Valeo 04E903023K

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Volkswagen Crafter 2E 2.0 TDI Diesel Engine Alternator 03L903023P

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Part no. 079903021D

Audi A4 B6 4.2 BBK Petrol Engine Alternator Generator 079903021D

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Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

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Audi A1 8X A3 8P Alternator Generator 1.4 TFSI Petrol Engine CAVG 03C903023A

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

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Audi S8 D3 S6 C6 Alternator Water Cooled 190A 14V 5.2 FSI V10 079903021J

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Audi Volkswagen Seat Skoda Petrol Alternator Generator 14V 140A 06J903023D

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

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Audi A7 4G 3.0 TDI Alternator Generator 059903018TX

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BMW 5 6 7 E60 E61 E63 E65 N62 N62N Alternator Supporting Bracket Mount 7533837

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BMW E60 E81 E90 E91 Petrol Alternator Generator 180A 7555926

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

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Audi A4 B8 A5 8F 2.0 TDI Diesel Engine Alternator Generator 04L903017D

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Audi A4 B7 4.2 BBK Petrol Engine Alternator Generator 079903021E

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Mercedes W213 C238 Petrol Alternator Generator A0009060205

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Peugeot Partner B9 Alternator Generator VALEO 9810525380

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BMW E90 E91 E92 E93 LCI Diesel N57 Alternator Remy 150A 7808073 DRA0429

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

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Audi Q5 8R 2.0 TDI Alternator Generator 14V 180A Valeo 03L903016A

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Audi A8 D4 Alternator Generator Electrical Unit 3.0 TDI Diesel Engine 059903019H

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

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Audi A5 8T A4 B8 2.0 TFSI Engine Alternator Generator 06H903017T

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BMW F20 F21 F30 LCI M140i 340i Alternator Generator 180A BOSCH 8614276

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BMW X5 E53 4.4i 4.6is M62 Water Cooled Alternator Generator 150A

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Alternator Generator Mercedes W211 S211 OM646 Diesel Engine 200A A0131545902

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Mercedes ML W163 Alternator Generator A0001502550

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Chrysler Voyager 2.8 CRD ENR Engine Alternator Generator 4868429AD

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

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Audi RS3 8V 2.5 TFSI Alternator 14V 180A 07K903023J

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Audi A4 B7 A6 C6 Alternator Bracket Pulley Mount Holder 2.7 3.0 TDI 059903143K

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Volkswagen Golf Mk7 Audi A3 8V Alternator 14V 140A 1.5 TSI 05E903026B

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

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Mercedes Citan W415 Alternator Generator OM607 Diesel Engine 150A 14V 231000026R

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

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Mini Cooper One R50 R52 Alternator Generator 100A Petrol 7523897

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BMW 3 Series E90 E91 E92 M3 Engine Alternator Generator Valeo 180A 7838656

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Audi A5 8T Alternator Generator Electrical Unit 150A 14V 3.0 TDI 059903019N

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Audi TT FV Engine Alternator Generator Electric 14V 150A 2.0 TFSI 06K903023G

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BMW E87 E90 E91 E60 E61 E63 N52 Alternator Generator 155A 7542529

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Audi A4 B9 A5 F5 Alternator Generator Valeo 2.0 TFSI DDWA 06L903018H

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Mini Cooper One R56 Alternator Generator Bosch 150A 7553009

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Ford Transit Connect Engine Alternator Generator Unit Diesel KK3T-10300-BB

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Skoda Rapid NH1 1.4 TSI Petrol Alternator Generator Bosch 04E903021M

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Audi Q2 GA Diesel Engine Alternator Generator Assembly Bosch 04L903024T

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

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Volkswagen Polo Mk5 Alternator Generator 140A Diesel Engine 04B903023D

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

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BMW Z4 E89 23i 30i N52N Alternator Denso 170A 7552815

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Mini Cooper R55 R56 R57 Mitsubishi Engine Alternator Generator Petrol 7576921

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VW Volkswagen Polo Gti 6R Golf Mk7 Alternator Generator 14V 140A 6J903023G

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

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Part no. 7792092

BMW X5 E53 3.0d Diesel M57 Alternator 150V 7792092

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Mercedes W204 S204 C204 Alternator Generator 150A 14V 1.8 Petrol A0009067902

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Part no. 7649390-1

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

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Part no. 04E903015A

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

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Part no. 7591529

BMW F12 F13 F20 F21 Alternator Generator 14V 210A N55 Petrol Engine 7591529

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

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Part no. 7501690

BMW 3 5 7 X5 Series E38 E39 E46 E53 Generator Alternator Bosch 120A 7501690

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Part no. 06F903023D

Skoda Fabia Mk2 5J Engine Alternator Generator Unit 14V 110A 06F903023D

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Part no. 06J903023A-1

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

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Part no. 8645329-1

BMW F20 F21 F30 F31 LCI B38 B48 Alternator Generator Denso 14V 220A 8645329

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Showing 199-297 of 467 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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