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

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VW Volkswagen Touareg 7P Alternator Generator 14V 190A 3.0 TDI Diesel 059903023

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Mercedes W176 W242 W246 Alternator Generator Bosch A180 Petrol A0009061903

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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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Alternator Generator Mini Cooper R55 R56 R57 R57 R58 LCI Petrol 7574365

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

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Volkswagen VW Golf Mk7 Audi A1 8X Alternator Generator 14V 110A 04E903015

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Audi A4 B9 VW Polo Mk5 1.4 TFSI Petrol Alternator Generator Denso 04E903024N

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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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Audi A6 C7 A7 4G Alternator Generator Hitachi 2.8 FSI 06E903018M

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

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

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

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

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

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Audi A4 B7 Alternator Generator Unit 140A 14V 1.8 2.0 Petrol Engine 06D903016AB

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

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Audi A4 B8 2.0 TDI Alternator Generator 150A Diesel Engine Unit 03G903016F

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Ford Transit Mk7 Diesel Engine Alternator Generator Unit 2.2 TDCi 6C1T-10300-BD

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Audi A1 8X Seat Leon Mk3 Cupra 5F Alternator Generator Petrol Engine 06J903023BX

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Lexus LS400 1UZFE V8 Petrol Engine Alternator Generator Denso 2706050200

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Audi Q5 8R 2.0 TDI Quattro Alternator Generator 03L903017B

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Audi A6 C7 3.0 TDI CLAA Alternator Generator Engine Unit Hitachi 059903018R

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

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

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BMW Z4 F20 F30 E89 Petrol Alternator Generator 170A 7605478

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Audi A4 B8 3.2 FSI Alternator Generator 06E903016N

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Audi A3 8V A1 S1 8X VW Jetta A6 Golf 5G Golf R 5G Petrol Alternator 04C903023M

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Audi A4 B8 3.2 FSI Alternator Generator 06E903016S

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Citroen Relay III Alternator Generator Valeo 9805343480

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

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Mercedes R170 Alternator Generator M111 Petrol Engine 90A A0091547602

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Audi Q5 FY Alternator Generator Valeo 2.0 TFSI 06L903027

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Volkswagen New Beetle 1.4 TSI Petrol Engine Alternator Motor 14V 110A 03C903023F

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Audi A4 B9 A5 F5 Q5 FY A6 C8 A7 C8 Alternator Generator Valeo 04L903018A

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

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

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Skoda Rapid NH1 1.4 TSI Petrol Alternator Generator Bosch 04E903021M

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BMW F31 Diesel Engine Alternator Generator 220A Valeo N57D30A 8509226

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BMW F10 F11 F12 F13 N57N Diesel Alternator 210A Valeo 8515754

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Audi Q3 8U Alternator Generator Unit 14V 140A 06J903023R

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Audi A1 GB Seat Ibiza FR Alternator Generator 140A Petrol 1.0 TSI 05E903026Q

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

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Audi A1 8X 1.4 TFSI CZCA Alternator Generator 04C903023T

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BMW E39 Alternator Generator 14V 50/90A 1432978

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Seat Ibiza Volkswagen Polo Mk5 6R 1.2 Petrol Alternator Generator 03D903025J

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Audi A4 B7 2.7 TDI BPP Diesel Engine Alternator Generator 059903023BX

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

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

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Alternator BMW F20 LCI Mini F30 F56 F60 Alternator Generator DENSO 150A

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Peugeot 307 Citroen Berlingo Diesel Engine Alternator Generator 9646321880

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

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

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VW Polo 4 9N 1.4 TDI Seat Skoda Diesel Engine Alternator Generator 045903023A

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

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

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

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

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Renault Trafic Vauxhall Vivaro 1.6 dCi Diesel Alternator Generator 231008633R

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

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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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Part no. 03G903016G-1

Audi A4 B8 2.0 TDI Alternator Generator 03G903016G

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Alternator Generator Peugeot 208 308 Partner Diesel 12V 9678048880

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

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Part no. A0009063322

Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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

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Part no. 03L903143K

Audi A4 B8 2.0 TDI Alternator Mount Tensioner Pulley Bracket Support 03L903143K

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Nissan Qashqai Renault Megane II Dacia Duster dCi Engine Alternator 820072829

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Part no. 23100JD71A

Nissan Qashqai J10 Renault Koleos 2.0 dCi Engine Alternator 23100JD71A

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Part no. 8634124

BMW F40 F45 X1 F48 Mini F55 F56 F60 Alternator Generator Denso 120A 8634124

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Part no. 7552815-1

Alternator BMW Z4 E89 23i 30i N52N Alternator Denso 170A 14V 7552815

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Part no. A0009068802-1

Mercedes Sprinter W906 Alternator Generator Diesel 180A 14V A0009068802

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Mercedes W205 Alternator 14V/200A Valeo Diesel Engine M626 A0009063701

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Alternator BMW G20 G30 G14 B47 B48 B58 B46 Alternator 180A 14V 8634166

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Alternator BMW E60 E61 E87 E90 E91 N52 Generator 155A Bosch LRA02970

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BMW F20 F21 F30 F31 F32 N47N Diesel Alternator 175A 7823343 7823344

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Alternator Mercedes W211 Alternator Generator Bosch 14V 180A A2721540102

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Peugeot Expert Citroen Berlingo Diesel Engine Alternator Generator 5705AS

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Part no. 7616120

Alternator BMW F20 F21 F30 F31 F36 Petrol N55 Generator 210A 7616120

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Part no. A0131541002-1

Mercedes Vito Viano W639 Alternator Generator Diesel 200A A0131541002

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Part no. 7542529-1

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

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Part no. A6461541102-1

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

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Part no. 7515029-2

Mini R50 R52 Petrol W10 Compact Alternator Generator 105A 7515029

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Part no. 03P903023D

VW Seat Skoda Polo MK5 Diesel Engine Alternator Generator 140A 14V 03P903023D

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Part no. CC11-199049-AA

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

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

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Part no. 7823344-1

BMW 1 3 4 F20 F21 F30 F31 F32 N47N Diesel Alternator 180A 7823343 7823344

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Mercedes ML W163 Alternator Generator A0001502550

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

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

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

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Part no. 7834160

BMW E60 M5 E63 E64 M6 S85 Alternator Generator 170A 7834160

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Part no. 7615484-1

Mini R55 R56 R57 LCI N12 N14 N16 N18 Engine Alternator Generator Petrol 120A

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Part no. 7550319

Mini R50 R52 Alternator Generator 110A Benzin 7550997 7550319

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Mini Cooper One R50 R52 W10 Petrol Alternator Generator 110A 7550997 7515426

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Showing 298-396 of 497 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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