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. 8570673-1

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

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

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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. 8200404459D

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

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Part no. 7558220-1

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

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Part no. 7606628

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

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Part no. 7603779

Alternator BMW F10 F13 F07GT F02 Petrol N63 Alternator valeo 230A 7603779

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Part no. 03L903023P-1

Volkswagen Crafter 2E 2.0 TDI Diesel Engine Alternator 03L903023P

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Part no. 079903021E

Audi A4 B7 4.2 BBK Petrol Engine Alternator Generator 079903021E

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Part no. 8509224

Alternator BMW F30 F32 N57N 330d 430d Diesel Engine Generator 230A Valeo 8509224

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Part no. AG9T10300AA

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

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Part no. 7540992-1

Alternator Generator BMW X5 E53 E60 E61 E63 E65 N62 Petrol Engine 180A C543294A

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Part no. 7543083-2

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

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Part no. 8571358

Alternator BMW G11 G12 LCI G20 G21 G30 G31 Alternator 250A Bosch 8571358

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Part no. A2711541402

Mercedes W203 W204 M271 Engine Alternator Generator Valeo 120A 14V A2711541402

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Part no. 2354130

BMW 3 X5 Series E46 E53 3.0d M57 Alternator Belt Tensioner 2354130

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Part no. 079903021D

Audi A4 B6 4.2 BBK Petrol Engine Alternator Generator 079903021D

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Part no. 8626086-1

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

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Part no. A6461540102

Alternator Generator Mercedes Vito W639 Sprinter W906 14V 180A A6461540102

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Part no. 7550468-1

BMW 1 3 E81 E87 LCI E90 E91 N43 Alternator Generator 170A Petrol NAPA NAL1250

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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. 7550967-1

BMW E81 E90 E91 E60 Petrol Alternator Generator 150A 7550967

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Part no. 04L903018A

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

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Part no. 045903023A-1

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

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Part no. 9665580680

Alternator Citroen Berlingo Peugeot Partner Diesel 1.6 Hdi Alternator 9665580680

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Part no. 7542529-3

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

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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. 8200404459-1

Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Generator 8200404459

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Part no. 03L903023F-1

Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F

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Part no. 03L903023K-1

Audi A3 8P A4 A5 B8 Q5 Alternator Generator Diesel Electrical Unit 03L903023K

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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. A6421540402-1

Mercedes W164 W204 W211 OM642 Diesel Alternator Generator A6421540402

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Part no. 7533270

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

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Part no. 7823291-2

Alternator Mini Cooper R55 R56 R57 LCI R60 Diesel N47N Generator 158A 7576956

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Part no. 06F903023L

Alternator Volkswagen Transporter T5 2.0 TDI Diesel Engine 110A Bosch 06F903023L

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Part no. 7802929-1

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

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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. 7515030

Mini R52 R53 Petrol W11 Compact Alternator Generator 105A 7515030

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Part no. 7555926-2

BMW E60 E81 E90 E91 Petrol Alternator Generator 180A 7555926

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Part no. 04E903023K

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

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Part no. 045903143E

VW Volkswagen Polo 9N 1.4 TDI Alternator Bracket Mount Carrier 045903143E

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Part no. A0009063322-1

Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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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. 7802261-2

BMW E81 E82 E90 E91 N47 Alternator Generator 180A Autoelectro 7802261

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Part no. 059903018TX

Audi A7 4G 3.0 TDI Alternator Generator 059903018TX

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Part no. 2247391

BMW X5 Series E53 M57 3.0d Diesel Engine Starter Motor 2247391

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Part no. A2711540902

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

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Part no. A0009063705

Alternator Mercedes W212 S212 Diesel OM651 Alternator 220A Valeo A0009063705

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Part no. 7533837

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

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Part no. 7789981-1

Engine Alternator BMW E60 E61 E65 E66 Diesel Alternator Generator 170A 7789981

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Part no. A0009062700-1

Mercedes W639 W906 W907 OM642 Diesel Engine Alternator Generator A0009062700

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Part no. 03G903016G-1

Audi A4 B8 2.0 TDI Alternator Generator 03G903016G

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Part no. 7640132-1

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

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Part no. 7649390

BMW F45 i8 Mini F60 B38 B38X Hybrid Engine Alternator Generator 7649390

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Part no. 7501687

BMW 3 5 E39 E46 M52 M54 320i 325i 330i 520i Alternator Generator 90A Valeo

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Part no. A0009060205

Mercedes W213 C238 Petrol Alternator Generator A0009060205

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Part no. 7792092

BMW X5 E53 3.0d Diesel M57 Alternator 150V 7792092

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Part no. A0009067900

Alternator Mercedes W204 W212 Diesel Engine OM651 Valeo 180A A0009067900

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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. A0131540002

Alternator Mercedes W203 Diesel OM648 OM646 Engine ALternator 200A A0131540002

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Part no. 7786861

BMW X5 E53 3.0d M57 Alternator Starter Cable Wiring Base B+ 7786861

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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. 7575650-1

Alternator Mini Cooper R55 R56 R57 R57 R58 Generator Petrol 7575650

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Part no. 13222935-1

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

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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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Part no. 059903018R

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

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Part no. 8579420-1

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

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Part no. A0009064022

Mercedes W447 OM622 Diesel Engine Alternator Generator A0009064022

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Part no. 8570676-1

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

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Part no. 7789980

BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

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Part no. 7604782

Mini R55 R56 LCI R60 Alternator Generator Bosch 150A Petrol 7604782

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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. 8645329-1

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

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Part no. CC11-199049-AA

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

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Part no. 06B903016AB-1

Audi A4 B7 Petrol Engine Alternator Generator Electric Unit 14V 140A 06B903016AB

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Part no. 7521383-1

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

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Part no. A0009064508

Alternator Generator Mercedes W213 C238 C253 OM656 Engine Valeo 250A A0009064508

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Part no. 95519888

Opel Vivaro B 1.6 CDTI Alternator Generator 150A 95519888

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Part no. 231001423R

Renault Trafic Vauxhall Vivaro 2.0 DCI Diesel Alternator Generator 231001423R

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Part no. 2248296

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

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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. A6681540102

Mercedes W168 OM668 Diesel Alternator Generator A6681540102

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Part no. 7550469

BMW E60N E61N E81 E87N E88 E90 E91 E92 E93 Alternator 7550469

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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. 03G903016N

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

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Part no. A0009062609

Mercedes C118 W177 W247 Three Phase Alternator A0009062609

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Part no. 8200404459G

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

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Part no. 06F903023H

Audi A4 B7 A6 C6 Alternator Generator 1.9 TDI Diesel 06F903023HX

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Part no. 04L903017D

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

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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. 7616119

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

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Part no. 7550997-2

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

Product currently unavailable

Part no. 7543083-1

BMW 1 3 5 E60 E61 E87 E90 E91 N52 WAI Alternator Generator 155A 11077N

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Part no. 06F903023J

Audi A4 B7 Alternator Generator 2.0 TDI BRE Engine 06F903023J

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Part no. 06H903016L

Audi A5 8T Engine Alternator Generator 14V 140A Bosch 2.0 TFSI 06H903016L

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Part no. A0009068302

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

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Part no. 06E903016N

Audi A4 B8 3.2 FSI Alternator Generator 06E903016N

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Part no. A0131541002-2

Mercedes Vito Viano W639 Alternator Generator Diesel 200A A0131541002

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Part no. 7552815

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

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Part no. 8570673

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

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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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