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. 8634167

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

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Renault Trafic II Opel Vivaro A 2.0 DCI Alternator Generator 8200404459

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

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Mini Cooper R56 N12 W16 Alternator Generator Napa 7575650

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

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Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

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Mercedes R170 Alternator Generator M111 Petrol Engine 90A A0091547602

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

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Part no. 7802471-1

Alternator Generator BMW E87 E90 E91 Diesel Engine Electrical Unit 150A 7802471

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BMW 3 5 7 X5 E38 E39 E46 E53 M54 Engine Generator Alternator 120A

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

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Mercedes-Benz W203 M111 C 200 230 K Bosch Alternator Generator A0111547202

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Part no. 7615484-2

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

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Audi Q5 8R 2.0 TDI Quattro Alternator Generator 03L903017B

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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. CC1T10300BB

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

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Part no. 03L903023F

Volkswagen Golf Mk6 Alternator Generator Electrical Unit Valeo 03L903023F

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Part no. 7515030-3

Mini R52 R53 Petrol W11 Compact Alternator Generator 7515030

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Part no. 8200690199

Renault Trafic II Alternator Generator 120A SG12B050 8200690199

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Part no. 4461712

Ford Transit MK6 2.4 Diesel Engine Alternator Generator 4461712

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Part no. 7553009

Mini Cooper One R56 Alternator Generator Bosch 150A 7553009

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Part no. 03C903023S

Audi A1 8X 1.4 TSI CAXA Alternator 03C903023S

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Part no. 7550319

Mini R50 R52 Alternator Generator 110A Benzin 7550997 7550319

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Peugeot 206 Engine Alternator Generator 1638095180

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Part no. 7834160

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

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Part no. A0009063000

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

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Part no. 03L903024F

Alternator Volkswagen VW Sharan 2.0 TDI Engine Alternator 180A Bosch 03L903024F

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Part no. 51854902

Fiat Doblo 1.6 Diesel Alternator Generator Denso 120A 14V 51854902

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Part no. 04C903023K

Volkswagen Golf MK 7 Audi A3 8V 1.4 Alternator Petrol 04C903023K

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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. 7789980-2

BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

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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. 7521137-2

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

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Part no. 2C1T10300BA

Ford Transit Mk6 Alternator Engine Generator Valeo 2C1T10300BA

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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. A0009068802-2

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

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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. 06F903023FX

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

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Part no. A0131545902

Alternator Generator Mercedes W211 S211 OM646 Diesel Engine 200A A0131545902

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Part no. 7801124

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

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Part no. A0009067703

Mercedes W213 M274 Petrol Three Phase Engine Alternator Generator A0009067703

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Part no. A0121544502

Mercedes W168 Alternator Generator A0121544502

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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. 7823344-2

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

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Part no. A0009062003

Alternator Generator Mercedes W204 W207 Petrol Engine Bosch 150A A0009062003

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Part no. 06F903023HX

Volkswagen Golf Mk5 2.0 TFSI Petrol Alternator Generator 06F903023HX

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Part no. A0009067900-2

Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A A0009067900

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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. A0009062100

Mercedes W212 Engine Alternator Generator A0009062100

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Part no. A6519065200

Mercedes W910 OM651 Engine Alternator Generator Bosch A6519065200

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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. A6461540102-1

Alternator Generator Mercedes Vito W639 Sprinter W906 Engine Diesel A6461540102

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Part no. A6401540402

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

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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. A0111546402

Mercedes W163 CL203 W203 Petrol Alternator Generator Valeo 120A A0111546402

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Part no. A0009063322

Alternator Generator Mercedes W176 W246 OM651 Diesel Engine 175A A0009063322

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Part no. 8200660022

Renault Master Laguna 2 Opel Movano A Engine Alternator 14V 150A 8200660022

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Part no. 9646321880

Peugeot 307 Citroen Berlingo Diesel Engine Alternator Generator 9646321880

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Part no. CC1T-10300-CD

Ford Transit Mk8 2.2 TDCI Alternator Generator CC1T-10300-CD

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Part no. 07K903023J

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

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Mercedes W211 Alternator Generator A0121549802

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Part no. 504057813

Alternator Iveco Daily II Engine Alternator Generator 140A 504057813

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

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Part no. A0111549302

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

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

-40%

Part no. 8626086

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

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Part no. 7521137-1

BMW X3 E83 E46 E60 E61 E65 M54 Alternator Generator 150A 7521137

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Part no. 7823291-1

BMW Mini Cooper R55 R56 R57 LCI Alternator Generator Diesel 150A 7576956

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Part no. 6R0971349Q

Battery Cable VW Polo 6R Positive Alternator Starter Wiring B+ 6R0971349Q

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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. 8680374-1

BMW F45 Alternator Generator 14V 180A DENSO 8680374

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Part no. 7789980-1

BMW E46 Alternator Generator Diesel Engine M47N M57N 150A Lucas LRA02891

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Part no. A4159064900

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

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Part no. 7515029-1

Mini Cooper One R50 R52 Petrol W10 Compact Alternator RTX 7515029

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Part no. 03G903016A

Audi A6 C6 2.0 TDI Alternator Generator 180A 14V 03G903016A

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Part no. A0131540602

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

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Part no. 8509226

BMW F31 Diesel Engine Alternator Generator 220A Valeo N57D30A 8509226

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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. A0009063622

Mercedes W166 W204 R231 Alternator Generator 180A 14V A0009063622

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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. 7605060-1

Engine Alternator BMW F20 F21 F30 LCI Generator Lucas 170A N13 Petrol 7605060

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Part no. 9655296080

Citroen Dispatch Alternator Generator Valeo 90A 12V 9655296080

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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. 7576921

Mini Cooper R55 R56 R57 Mitsubishi Engine Alternator Generator Petrol 7576921

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Part no. 9805343480

Citroen Relay III Alternator Generator Valeo 9805343480

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Part no. 1432978

BMW E39 Alternator Generator 14V 50/90A 1432978

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Part no. A6421540502

Alternator Generator Mercedes W164 OM642 180A Electrical Unit Diesel A6421540502

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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. 06E903016S

Audi A4 B8 3.2 FSI Alternator Generator 06E903016S

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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. 9810525380

Peugeot Partner B9 Alternator Generator VALEO 9810525380

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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. 05E903018G

Volkswagen Golf CD1 Alternator Engine Generator Valeo 05E903018G

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Part no. 7576921-1

Mini Cooper R55 R56 R57 R58 Petrol Engine Alternator Generator 7576921

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Part no. 9807162780

Citroen Relay Jumper 35L Alternator Bracket Belt Tensioner Holder 9807162780

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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. 8200206251-1

Nissan Primastar X83 Alternator Generator Engine Unit 8200206251

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Part no. 6G9N10300YC

Land Rover Freelander 2 L359 2.2 Engine Alternator Generator 6G9N10300YC

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Part no. 059903018K

Audi Q7 4L Quattro Diesel 3.0 TDI ALternator Generator 180A Bosch 059903018K

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Part no. A6461541102-2

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

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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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