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.

More information

Make

Ford Transit Connect Engine Alternator Generator Unit Diesel KK3T-10300-BB

€142.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7640132

BMW F20 LCI F30 F56 Alternator Generator DENSO 150A 7640132

€28.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0131547002-1

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

€75.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009060922

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

€66.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A2711541402

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

€80.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6512011909

Mercedes W212 OM651 Alternator Support Bracket Belt Tensioner Holder A6512011909

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6519065700

Mercedes W907 314 CDI Engine Alternator Generator Valeo A6519065700

€161.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6512012009

Alternator Support Bracket Mercedes W212 OM651 Belt Tensioner Holder A6512012009

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009062209

Mercedes W118 W177 W247 Petrol M282.914 Alternator Generator A0009062209

€142.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7560377

Cable Alternator BMW E81 E82 E87 E88 E90 E91 LCI Starter B+ 7560377

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8573116

BMW 5 Series F10 F11 LCI B47 Cable Alternator Starter 8573116

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0131540902

Mercedes ML W164 W221 W251 OM642 CDI Altenator Generator 14V 220A A0131540902

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009060803

Alternator Mercedes W176 C117 X156 X117 Petrol Engine Generator A0009060803

€118.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 059903023N

Porsche Cayenne 92A Alternator Generator 3.0 TDI Diesel Engine 059903023N

€123.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8654635

Mini Cooper S F55 F56 Petrol Positive Battery Alternator Starter Cable 8654635

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6421540502-1

Mercedes W164 Alternator Generator OM642 180A Electrical Unit Diesel A6421540502

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 2650917-1

Ford Transit Custom MK8 Engine Alternator Generator Unit Diesel KK3T-10300-BB

€132.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009069905

Mercedes W205 W213 Engine Alternator Generator M264 Petrol A0009067703

€161.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0131540502

Mercedes W221 Alternator Generator A0131540502

€85.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. LR022528

Range Rover L405 Alternator Generator 12V 4.4 SDV8 BH42-10300-AC

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009062103

Mercedes W205 Alternator Generator Petrol Engine Valeo 150A 14V A0009062103

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0141541102

Alternator Generator Mercedes W204 W207 Diesel Engine Valeo 150A A0141541102

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8577238

BMW F30 F31 Sterter Motor Alternator Cable Wiring Loom Harness 8577238

€28.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8515494

BMW 5 Series F10 F11 530d N57N Cable Alternator Starter Base B+ 8515494

€31.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 2251619

Ford Focus MK3 Fiesta Mk6 Alternator Generator 1.5 TDCi Engine AV6N-10300-DC

€66.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0121542002

Mercedes W903 OM611 Diesel Alternator Engine Generator 14V 90A A0121542002

€108.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A1725403405

Mercedes R172 OM651 Diesel Alternator Wiring Harness Cable Loom A1725403405

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 03G903016F

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

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009061705

Mercedes W205 C63 Petrol Engine 14V 200A Alternator Generator Unit A0009061705

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 2371741

Mini F55 F56 Battery Cable Positive Battery Alternator Starter Wiring 2371741

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8594487

BMW F45 Mini F56 Positive Battery Alternator Starter Cable Wiring 8594487

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 03C903024F

Alternator Audi A3 8P VW Passat B7 Engine Generator 1.4 TSI 03C903024F

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009067902

Mercedes W204 S204 C204 Alternator Generator 150A 14V 1.8 Petrol A0009067902

€37.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 6C1010K019AC

Alternator Bracket Ford Transit Mk7 2.4 TDCi Mount Belt Tensioner 6C1010K019AC

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 2454938

Ford Transit Custom Mk8 Alternator Generator 14V 220A GK2T-10300-BD

€189.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009068706

Mercedes W205 C43 Alternator Generator VALEO 200A 3.0 Petrol A0009068706

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009062822-1

Mercedes W207 W212 W906 Engine Diesel 200A 14V Alternator Generator LRA03818

€104.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0131541002-2

Mercedes Vito Viano W639 Alternator Generator Diesel 200A A0131541002

€142.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7848603-1

Alternator BMW F87 M2 F80 M3 F82 F83 M4 S55 Engine Generator 250A Denso 7848603

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7540992-1

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

€113.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 059903019L

Porsche Macan 95B 3.0 TDI CTBA Engine Alternator Generator 14V 180A 059903019L

€61.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A2711540802-1

Mercedes W203 W211 C209 M271 Petrol Engine Alternator A2711540802

€56.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A4539063900

Smart C453 Alternator Generator 90A A4539063900 281920

€123.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009067702

Alternator Generator Mercedes W204 W207 W212 Engine Diesel 180A 14V A0009067702

€85.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7823343

Alternator BMW F20 F21 F30 F31 F32 N47N Diesel Generator 180A 7823343

€37.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7852129

Alternator BMW F90 M5 F91 M8 S63M Petrol Engine Generator 250A Valeo 7852129

€189.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. AH2210300AB

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

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 6791748

BMW F20 F21 F30 F31 DXC Pulse Generator Sensor Front Axle N47N 6791748

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009063000

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

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7541779

BMW Z4 E85 2.0i N46 Cable Alternator Starter Base B+ 7541779

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6261500075

Mercedes W205 Alternator Protective Cover Metal Sheet A6261500075

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8200881264

Alternator Support Nissan Qashqai Renault 2.0 dCi Engine Bracket 8200881264

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 06H903016L

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

€37.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A2649001800

Mercedes C205 W213 W253 W257 Alternator Generator M264 Engine A2649001800

€351.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A6421540402-2

Mercedes W164 W204 W211 OM642 Diesel Alternator Generator Valeo 439546

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7823310

BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 6956939-1

Changer Unit BMW E63 E64 6-disc Compact CD Head Player 6956939

€47.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0131545602

Mercedes W204 W212 Alternator Generator M272 180A 14V Petrol Engine A0131545602

€94.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 31100-PSA-013

Honda Stream S Alternator Generator 31100-PSA-013

€61.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0141542702

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

€75.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 6CIT-10300-BC

Ford Transit Mk7 Diesel Engine Alternator Generator Unit 6CIT-10300-BC

€80.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A2721540002

Alternator Generator Mercedes R171 W209 M272 Petrol Engine 150A A2721540002

€66.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8621490

Alternator Cable BMW F21 F22 F30 LCI 125i 220i 228i 320i N20 Starter 8621490

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. A0009061903

Mercedes W176 W242 W246 Alternator Generator Bosch M270 Petrol A0009061903

€56.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 06E903016N

Audi A4 B8 3.2 FSI Alternator Generator 06E903016N

€104.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8638588

BMW F20 F22 F30 LCI 125i 230i 320i 330i B48 Cable Alternator Starter 8638588

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 8577241

BMW F30 F32 LCI 330d 335dX 430d 435dX Alternator Starter Cable B+ 8577241

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7619250

Alternator Bracket BMW F10 F20 F22 F30 F32 LCI G30 B47 Supporting Mount 7619250

€23.95

Free delivery: Mar 30 – Apr 2

If paid before 14:00

Part no. 7823291

Mini R55 R56 R57 LCI Alternator Generator Diesel 150A 7823291

Product currently unavailable

Part no. 7555926

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

Product currently unavailable

Part no. 7802261

BMW E60 E61 E81 E87 E90 Alternator Generator Valeo 180A N47 7802261

Product currently unavailable

Part no. 8570676

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

Product currently unavailable

Part no. 8509023

BMW E90 E91 E92 E93 LCI X1 E84 X3 F25 Alternator Generator 180A N47N 8507624

Product currently unavailable

Part no. 7823344

BMW F20 F21 F30 F31 F32 F33 Alternator Generator 150A N47N Diesel 8519890

Product currently unavailable

Part no. 7605060

BMW F20 F21 F30 LCI DENSO 170A Alternator Generator 7605060

Product currently unavailable

Part no. A0001502550

Mercedes ML W163 Alternator Generator A0001502550

Product currently unavailable

Part no. 7550469

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

Product currently unavailable

Part no. 7533270

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

Product currently unavailable

Part no. 7575650

MINI Cooper One R55 R56 R57 R57 R58 LCI Alternator Generator Petrol 7575650

Product currently unavailable

Part no. A0009060401

Mercedes W204 OM651 14V 150A Alternator Generator Engine Start/Stop A0009060401

Product currently unavailable

Part no. 04L903017A

Audi A4 B8 2.0 TDI CNHC Diesel Alternator Generator 04L903017A

Product currently unavailable

Part no. A0009067500

Alternator Generator Mercedes W204 W212 Diesel Engine Valeo 180A 14V A0009067500

Product currently unavailable

Part no. 7808073

BMW E90 E91 E92 E93 LCI Diesel N57 Alternator 150A 7808073 7805432

Product currently unavailable

Part no. A2711540802

Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

Product currently unavailable

Part no. 7519618

BMW E46 E85 M54 Petrol Alternator Generator Bosch 120A 7519618

Product currently unavailable

Part no. 06D903016AB

Audi A4 B7 1.8 T BFB Petrol Engine Alternator Generator 06D903016AB

Product currently unavailable

Part no. 7796125-1

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

Product currently unavailable

Part no. A2661540802

Mercedes-Benz W169 W245 Alternator Generator Petrol 90A A2661540802

Product currently unavailable

Part no. 7823344-1

BMW 1 3 4 F20 F21 F30 F31 F32 N47N Diesel Alternator 180A 7823343 7823344

Product currently unavailable

Part no. A6681540102

Mercedes W168 OM668 Diesel Alternator Generator A6681540102

Product currently unavailable

Part no. A6421540502

Alternator Generator Mercedes W164 OM642 180A Electrical Unit Diesel A6421540502

Product currently unavailable

Part no. 7574365-2

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

Product currently unavailable

Part no. 7515029

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

Product currently unavailable

Part no. 7604782

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

Product currently unavailable

Part no. 6G9N10300UD

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

Product currently unavailable

Part no. 7796125

Alternator BMW X5 E70 X6 E71 M57N2 Generator 170A 170AMP 14V VALEO 7796125

Product currently unavailable

Part no. 7521137-1

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

Product currently unavailable

Part no. 7550468

BMW E81 E87 LCI E90 E91 E92 E93 Petrol N43 Alternator 170A 7550468

Product currently unavailable

Part no. A6421540402-1

Mercedes W164 W204 W211 OM642 Diesel Alternator Generator A6421540402

Product currently unavailable

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Showing 1-99 of 503 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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