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. 8645326

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

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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. 7640875

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

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Part no. A2721540002-1

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

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Part no. 06J903023BX

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

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BMW X5 E53 3.0d Diesel M57 Alternator 150V 7792092

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Part no. 7550469-2

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

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Part no. A6461541102

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

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Part no. 9646321880

Peugeot 307 Citroen Berlingo Diesel Engine Alternator Generator 9646321880

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Part no. 04B903023B

Volkswagen Polo Mk5 Alternator Generator 140A Diesel Engine 04B903023D

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Part no. 7542529-2

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

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Part no. A1561540102

Mercedes W204 C63 AMG M156 Engine Alternator Generator BOSCH 180A A1561540102

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Part no. A0009062700-1

Mercedes W639 W906 W907 OM642 Diesel Engine Alternator Generator A0009062700

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Part no. 06F903023C

Audi Volkswagen Seat Skoda Engine Alternator Generator 06F903023C

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Part no. 7508054

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

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Part no. A0009062722-1

Alternator Generator Mercedes W207 W212 OM642 Diesel Engine 200A A0009062722

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Part no. 06K903026C

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

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Part no. 06H903017EX

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

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Part no. 059903143K

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

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Part no. 06F903023D

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

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Part no. A0009061903

Mercedes W176 W242 W246 Alternator Generator Bosch M270 Petrol A0009061903

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Part no. 7615484

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

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Part no. 8570673

BMW F07 F10 Alternator Generator 221A Valeo N57N N57Z Diesel Engine 8570672

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Part no. 03C903023G-1

Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator 110A 03C903023G

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Part no. 2T1U-10300-CG

Ford Transit Connect MK1 Focus MK1 Engine Alternator Generator 2T1U-10300-CG

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Part no. A0009068106

Alternator Generator Mercedes W177 W247 M260 Petrol Engine 150A A0009068106

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Part no. A0131547002-1

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

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Part no. A6461540002

Mercedes Sprinter W906 OM646 Engine Diesel Alternator Generator A6461540002

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Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

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Part no. 8200690199

Renault Trafic II Alternator Generator 120A SG12B050 8200690199

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Part no. 8200206251-1

Nissan Primastar X83 Alternator Generator Engine Unit 8200206251

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Part no. CC1T10300BB

Ford Transit Mk7 2.2 TDCi Diesel Engine Alternator Generator Unit CC1T-10300-BB

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Part no. A6461540002-1

Alternator Mercedes Sprinter W906 Diesel OM646 Engine Alternator A6461540002

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Part no. 373004A310

Hyundai H-1 2.5 CRDI Alternator Generator 373004A310

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Part no. 059903023BX

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

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Part no. 03L903024M

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

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Part no. 7540993

Alternator BMW X5 E53 Engine N62 Alternator Generator 14V 100/180A Valeo 7540993

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Part no. 06J903023H

Volkswagen Golf Mk7 5G Alternator Generator 2.0 TFSI CHHA 06J903023H

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Part no. 06J903023G-1

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

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Part no. 06L903027

Audi Q5 FY Alternator Generator Valeo 2.0 TFSI 06L903027

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Part no. A0131540602

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

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Part no. A6401540402

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

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Part no. 6C1T-10300-CC-1

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

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Part no. A2711540802

Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

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Part no. A2721540102

Alternator Mercedes W211 Alternator Generator Bosch 14V 180A A2721540102

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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. 7515030-2

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

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Part no. 46774430

Fiat Doblo Engine Alternator Generator 46774430

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Part no. A0009068802-1

Mercedes Sprinter W906 Alternator Generator Diesel 180A 14V A0009068802

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Part no. 8573116

BMW 5 Series F10 F11 LCI B47 Cable Alternator Starter 8573116

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Part no. 9678048880

Alternator Generator Peugeot 208 308 Partner Diesel 12V 9678048880

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Part no. 04L903021G

Audi Q2 GA Diesel Engine Alternator Generator Assembly Bosch 04L903024T

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Part no. 06H903017T-1

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

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Part no. 8680374

BMW F45 Alternator Generator 8680374

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Part no. 7591529

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

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Part no. A0009063822

Alternator Generator Mercedes W176 W246 Diesel Engine Bosch 175A A0009063822

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Part no. A6421540502

Alternator Generator Mercedes W164 OM642 180A Electrical Unit Diesel A6421540502

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Part no. A2711540902-1

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

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Part no. A0009068802

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

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Part no. 7550997-1

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

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Part no. 7550997

Mini Cooper One R50 R52 Alternator Generator 110A Benzin 7550997 7559223

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Part no. 7831436

Alternator BMW M3 E46 Z3M E36 Petrol S54 Generator Valeo 120A 7831436 7830791

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Part no. 03G903016F

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

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Part no. A0131540002

Alternator Mercedes W203 Diesel OM648 OM646 Engine ALternator 200A A0131540002

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Part no. 038903024F

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

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Part no. 03D903025J-1

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

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Part no. 6C1T-10300-CC

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

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Part no. A0009063622

Mercedes W166 W204 R231 Alternator Generator 180A 14V A0009063622

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Part no. 03P903023B

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

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Part no. GK2T-10300-BC

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

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Part no. 05L903026B

Audi Q2 GA 3.0 TDI DTTC Diesel Engine Alternator Generator 05L903026B

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Part no. 8579420

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

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Part no. A4159064900

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

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Part no. 7533270-2

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

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Part no. 079903021E

Audi A4 B7 4.2 BBK Petrol Engine Alternator Generator 079903021E

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Part no. A0009062100

Mercedes W212 Engine Alternator Generator A0009062100

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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. 7515029

Mini Cooper One R50 R52 Petrol W10 Compact Alternator 105A 7515029

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Part no. A2661541202

Mercedes-Benz A B Class W169 W245 Alternator Generator Petrol 90A A2661541202

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Part no. 03C903023F

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

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Part no. 7519721

BMW 3 5 7 X3 Series E46 E60 E61 E65 E66 E83 M54 Alternator Generator 150A BOSCH

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Part no. 7515030-3

Mini R52 R53 Petrol W11 Compact Alternator Generator 7515030

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Part no. 7555926

BMW E81 E90 E91 E60 LCI Petrol Alternator Generator 180A 7550968

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Part no. 7533270-1

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

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Part no. 059903018R

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

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Part no. 8634124-1

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

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Part no. 7519618

BMW E46 E85 M54 Petrol Alternator Generator Bosch 120A 7519618

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Part no. 7558220

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

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Part no. 03G903016EX

Audi A4 B8 2.0 TDI Alternator Generator 03G903016EX

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Part no. A0121544502

Mercedes W168 Alternator Generator A0121544502

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Part no. 079903018X

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

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Part no. 8200404459D

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

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Part no. A6401540502

Mercedes W169 W245 A B 160 180 200 CDI OM640 Alternator Generator A6401540502

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Part no. 079903015P

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

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Part no. 06F903023P

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

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Part no. 05E903026K

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

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Part no. 04L903021H

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

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Part no. 9665580680

Alternator Citroen Berlingo Peugeot Partner Diesel 1.6 Hdi Alternator 9665580680

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Showing 100-198 of 464 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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