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

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BMW X5 E70 X6 E71 Alternator Generator 170A 170AMP 14V VALEO BM57N2 7796125

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Mercedes W176 W242 W246 Alternator Generator Bosch A180 Petrol A0009061903

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Audi Volkswagen Seat Skoda Engine Alternator Generator 2.0 TDI CAGA 06F903023P

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Audi Q5 FY Alternator Generator Valeo 2.0 TFSI 06L903027

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Audi A4 B8 2.0 TDI CNHC Diesel Alternator Generator 04L903017A

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Mercedes W163 CL203 W203 Petrol Alternator Generator Valeo 120A A0111546402

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Audi Q5 8R 2.0 TDI Quattro Alternator Generator 03L903017B

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

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

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Audi A4 B7 4.2 FSI V8 Petrol Engine Alternator Generator 079903018X

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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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Part no. 06E903016N

Audi A4 B8 3.2 FSI Alternator Generator 06E903016N

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Audi A4 B8 3.2 FSI Alternator Generator 06E903016S

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

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

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

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

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

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Mini R50 R52 Alternator Generator 110A Benzin 7550997 7550319

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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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Part no. 7615484-1

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

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Part no. 8509226

BMW F31 Diesel Engine Alternator Generator 220A Valeo N57D30A 8509226

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Part no. 05E903026Q

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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Part no. 04C903023T

Audi A1 8X 1.4 TFSI CZCA Alternator Generator 04C903023T

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Part no. 1432978

BMW E39 Alternator Generator 14V 50/90A 1432978

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Part no. 03G903016G

Audi Q5 8R 2.0 TDI CJCA Diesel Engine Alternator Generator 03G903016G

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Citroen Relay III Alternator Generator Valeo 9805343480

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Part no. 8509225

Alternator Generator BMW F30 F32 N57N Diesel Electrical Unit Denso 180A 8509225

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Part no. A6461541102-2

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

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

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

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Alternator Generator Mercedes W169 W245 Engine 115A 14V A2661540902

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

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Part no. A2721540002-1

Alternator Generator Mercedes R171 W209 W211 M272 Petrol Engine 150A A2721540002

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BMW E46 N42 316i 318i Petrol Engine Alternator Generator Remy 7521382

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Part no. CC11-199049-AA

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

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Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002

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Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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

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Nissan Qashqai J10 Renault Koleos 2.0 dCi Engine Alternator 23100JD71A

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

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Alternator Generator Mercedes R171 W209 M272 Petrol Engine 150A A2721540002

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Alternator Generator Mercedes Vito W639 Sprinter W906 Engine Diesel A6461540102

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

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BMW X5 E70 Alternator Generator Engine Unit Valeo 220A 14V 7801124

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Alternator Iveco Daily II Engine Alternator Generator 140A 504057813

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BMW F10 F11 X5 E70 Alternator Generator Unit Valeo 230A Diesel Engine 7807187

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Alternator Mercedes Vito W447 Engine Generator 200A Valeo A0009068504

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BMW F07 F10 F11 N47N Diesel Alternator Generator Engine 220A Valeo 8507625

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Alternator Generator BMW F10 F20 F30 LCI Diesel Engine Unit Denso 180A 7640875

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BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

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Alternator Generator Mercedes W205 W213 Diesel Engine Valeo 200A A0009063903

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

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

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Volkswagen Transporter LT 35 2.5 TDI Alternator Bracket Vw 074145169F

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Alternator Volkswagen LT35 2.5 TDI Diesel Engine Alternator 90A Bosch 074903025K

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Part no. 7806779-1

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

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Alternator Mercedes Sprinter W906 Vito W636 W639 Diesel 180A Valeo A0009068802

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Alternator Mercedes W212 S212 Diesel OM651 Alternator 220A Valeo A0009063705

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Alternator Generator Peugeot 208 308 Partner Diesel 12V 9678048880

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Part no. 03G903016G-1

Audi A4 B8 2.0 TDI Alternator Generator 03G903016G

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Renault Trafic Vauxhall Vivaro 2.0 DCI Diesel Alternator Generator 231001423R

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

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

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Part no. 820072829

Nissan Qashqai Renault Megane II Dacia Duster dCi Engine Alternator 820072829

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Part no. 03L903143K

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

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Part no. 6G9N10300UD

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

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Part no. AH2210300AB

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

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Part no. A0009063000

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

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

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Part no. 6G9N10300YC

Land Rover Freelander 2 L359 2.2 Engine Alternator Generator 6G9N10300YC

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Part no. YLE500180

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

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

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

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Part no. 8626086-1

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

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

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Part no. 7515029-2

Mini R50 R52 Petrol W10 Compact Alternator Generator 105A 7515029

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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. 7542529-1

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

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Part no. 4461712

Ford Transit MK6 2.4 Diesel Engine Alternator Generator 4461712

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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. A2711540802-1

Mercedes W203 W211 C209 M271 Petrol Engine Alternator A2711540802

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Part no. A0009068802-1

Mercedes Sprinter W906 Alternator Generator Diesel 180A 14V A0009068802

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Part no. A4159064900

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

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Part no. 231008633R

Renault Trafic Vauxhall Vivaro 1.6 dCi Diesel Alternator Generator 231008633R

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Part no. A0009063701

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

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Part no. 8634166

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

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Part no. 7543083-3

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

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Part no. 7823344-2

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

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Part no. A2721540102

Alternator Mercedes W211 Alternator Generator Bosch 14V 180A A2721540102

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Part no. 5705AS-1

Peugeot Expert Citroen Berlingo Diesel Engine Alternator Generator 5705AS

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Showing 298-396 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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