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. 7550469-3

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

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Part no. A6461540102

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

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Part no. 7521137-2

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

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Part no. 7552815

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

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Part no. A6401540402

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

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Part no. 03G903016G

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

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Part no. 06J903023B

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

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Part no. 8680374-1

BMW F45 Alternator Generator 14V 180A DENSO 8680374

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Part no. 7523897

Mini Cooper One R50 R52 Alternator Generator 100A Petrol 7523897

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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. 7806779-1

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

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Part no. A0009063622

Mercedes W166 W204 R231 Alternator Generator 180A 14V A0009063622

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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. AH2210300AB

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

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Part no. A0009063701

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

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Part no. A0009063000

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

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Part no. A0111546402

Mercedes W163 CL203 W203 Petrol Alternator Generator Valeo 120A A0111546402

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Part no. A0009067900-2

Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A A0009067900

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Part no. A0009063705

Alternator Mercedes W212 S212 Diesel OM651 Alternator 220A Valeo A0009063705

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Part no. 7542529

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

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Part no. A0009062722-1

Alternator Generator Mercedes W207 W212 OM642 Diesel Engine 200A A0009062722

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Part no. 7574365-1

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

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Part no. 7615484

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

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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. A4159064900

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

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Part no. 03L903023F

Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F

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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. 231769503R

Renault Trafic II 2.0 DCI Master III 2.3 DCI Alternator Plate Cover 231769503R

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Part no. A2711540902-1

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

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Part no. 03L903016A

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

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Part no. 06B903016AB

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

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Part no. 03L903024M

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

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Part no. A6461541102-2

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

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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. A0121549802-1

Mercedes W211 Alternator Generator A0121549802

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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. 7550319-1

MINI Cooper One R50 R52 Petrol W10 Alternator Generator 110A 7550997 7550319

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Part no. 074145169F

Volkswagen Transporter LT 35 2.5 TDI Alternator Bracket Vw 074145169F

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Part no. A0009064508

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

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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. A2711541402-1

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

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Part no. A6519065200

Mercedes W910 OM651 Engine Alternator Generator Bosch A6519065200

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Part no. 7540992-2

Alternator Generator BMW X5 E53 E60 E61 E63 E65 N62 Petrol Engine 180A 7540992

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Part no. 8634167

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

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Part no. 8200690199

Renault Trafic II Alternator Generator 120A SG12B050 8200690199

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Part no. A0001502550

Mercedes ML W163 Alternator Generator A0001502550

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Part no. 8200206251-1

Nissan Primastar X83 Alternator Generator Engine Unit 8200206251

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Part no. 7640132-2

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

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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. 7792092

BMW X5 E53 3.0d Diesel M57 Alternator 150V 7792092

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Part no. 8509023-1

Alternator Generator BMW E90 E91 E92 E93 LCI E84 F25 Diesel N47N 8507624

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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. 7542934

BMW 5 6 7 Series E60 E61 E65 N62N Petrol Alternator Generator 180A 7542934

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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. 8200086130-1

Renault Trafic II Opel Vivaro A 1.9 DCI Alternator Generator 8200086130

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Part no. 7796125-1

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

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Part no. 9655296080

Citroen Dispatch Alternator Generator Valeo 90A 12V 9655296080

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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. A2661540802

Mercedes-Benz W169 W245 Alternator Generator Petrol 90A A2661540802

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Part no. 7604782-1

MINI Cooper S R55 R56 LCI R60 Alternator Generator 150A Petrol 7604782

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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. 059903015P

Volkswagen Touareg Audi Q7 Water Cooled Alternator 190A 059903015P

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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. A0009063322

Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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Part no. CC1T-10300-CC

Alternator Ford Transit MK7 Diesel 2.2 Tdci Bosch CC1T-10300-CC

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Part no. 7799204-1

Alternator Generator BMW E60 E63 E65 E83 LCI E90 Diesel 170A LRA02319

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Part no. 8570673-1

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

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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. A0111549302

Mercedes-Benz C-Class W203 M111 C 180 Bosch Alternator Generator 0124515056

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Part no. A0009060922-1

Alternator Mercedes W212 W447 X253 C238 Petrol M274 150A Bosch A0009060922

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Part no. A0009067703

Mercedes W213 M274 Petrol Three Phase Engine Alternator Generator A0009067703

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Part no. 6C1T-10300-BD

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

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Part no. 7550319

Mini R50 R52 Alternator Generator 110A Benzin 7550997 7550319

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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. 820072829

Nissan Qashqai Renault Megane II Dacia Duster dCi Engine Alternator 820072829

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Part no. A2721540102

Alternator Mercedes W211 Alternator Generator Bosch 14V 180A A2721540102

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Part no. A0009068504

Alternator Mercedes Vito W447 Engine Generator 200A Valeo A0009068504

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Part no. A0111548402

Alternator Generator Mercedes W203 M111 Petrol Engine Valeo 120A A0111548402

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Part no. 1432978

BMW E39 Alternator Generator 14V 50/90A 1432978

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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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Part no. 05E903026Q

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

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Part no. A0009063322-1

Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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Part no. AC1T10300BB

Ford Transit Mk7 Engine Alternator Generator Unit Diesel AC1T10300BB

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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. 04L903017E

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

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Part no. 06F903023FX

Audi A4 B6 B7 A1 8X 1.9 TDI 2.0 TDI Engine Alternator Generator 06F903023FX

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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. 8578609

BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608 8578609

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Part no. A0009060903

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

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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. 8V21-10300-AB

Ford Focus Diesel Engine Alternator Generator Engine Unit 8V21-10300-AB

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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. A0009068302

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

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Part no. A0131546802

Alternator Generator Mercedes W204 W212 OM651 14V 180A Engine Electrical Unit

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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. 7540993

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

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Part no. 04C903023T

Audi A1 8X 1.4 TFSI CZCA Alternator Generator 04C903023T

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Part no. A0141542702

Alternator Mercedes Vito W639 Sprinter W906 Generator 14V 120A Bosch A0141542702

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Part no. 05L903026B

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

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Showing 298-396 of 455 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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