What is a car electrical system?

This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia.

What is an alternator for in a car?

The alternator generates electrical current when the engine is running and charges the battery.

What is the difference between a starter and an alternator?

The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving.

How to check if the battery is working?

Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking.

What are the most common symptoms of car electrical failure?

Problems starting the engine, flashing warning lights, power windows not working or dimming lights.

Do electrical parts from one model fit another?

Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility.

How often should you check your electrical system?

It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip.

Automotive electrical systems

At Global Parts, we offer a wide selection of original used car parts, including automotive electrical systems for many popular car brands such as BMW, Mini, Mercedes, Audi, Volkswagen, and others. Each of our car parts undergoes quality control to ensure you receive a top-quality product.

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Products in promotion

Part no. 6960259

BMW 1 3 SERIES E81 E82 E87 E90 E91 E92 E93 Flat Cable Wiring Wire CAS Start Stop

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9251702

BMW 1 2 3 Series F20 F21 F22 F30 F31 F32 Connecting Wire Sat Nav Champ/Mask-CID

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A1648209385

Mercedes ML W164 Door Module Front Left N/S Control Unit Module A1648209385

€28.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8631634

BMW X5 F15 Earth Ground Cable Negative Battery Lead Wiring 8631634

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6974246

BMW MINI Cooper Clubman R55 R55N LCI Retaining Bracket Safety Belt Rear Right

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 411033

iPod Most Interface BMW E60 E65 E81 E87 E90 Module Alpine 0411033

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6918567

BMW 7 Series E65 E66 E67 Seat Control Unit Module Heating 6918567

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9290014

BMW X3 F25 Light Module Control Footwell ECU Unit FRM3 9290014

€108.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. GK2T-9K499-ABB

Ford Transit Custom Engine Fuse Box Wiring Loom Harness Cable GK2T9K499ABB

€113.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 5Q0959435C

Audi A3 8V VW Golf Mk7 Kessy Module Keyless Go Entry Control Unit 5Q0959435C

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8J0971237A

Audi TT 8J Starter Motor Negative Battery Wiring Harness Cable 8J0971237A

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2048205015

Mercedes W204 W207 Wiring Loom Cable Harness AUX Jack A2048205015

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6939287

BMW E60 E61 E63 Air Module ECU Control Unit Centre Vehicle Sensor 6939287

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 3415607

BMW X3 E83 LCI Petrol N52N Cable Alternator Starter Base B+ 3415607

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6947817

BMW E65 E66 IDrive Control Unit Front Centre Console Module ECU 6947817

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2219004704

Mercedes-Benz S W221 Comand 6-Changer CD Radio Head Unit DVD Navi A2219004704

€807.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2781506020

Cable Beam Mercedes W166 W212 W221 Engine Wiring Harness Loom A2781506020

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2098200326

Mercedes C209 Body Control Module Unit Temic 376 800 GZ A2098200326

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2118703126

Headlight Module Mercedes C209 W211 CLS C219 Level Control Unit ECU A2118703126

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 1393415

BMW 3 5 7 Series E36 E38 E90 E91 F10 F11 Change-Over Contact Relay Grey 1393415

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6900582

BMW 7 Series E65 E66 Fuse Board Power Distribution Box

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6986879

BMW Z4 E85 Roadster Cabrio Convertible Roof Folding Top Module Unit 6986879

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A1668203426

Mercedes W166 C292 Front Seat Adjuster Module Unit Left Right N/O/S A1668203426

€42.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2049060305-1

Mercedes W204 SAM Module Control Unit Rear A2049060305

€80.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8K0907064JE

Audi A5 8T Body Control Comfort Unit Module BCM Convenience Unit ECU 8K0907064JE

€56.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 3D0907539A

VW Volkswagen Phaeton 3D Dashboard Light Sun Solar Sensor Unit 3D0907539A

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 7L5919283B

Porsche Cayenne 9PA PDC Parking Sensor Control Module Unit Controller 7L5919283B

€94.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8V4971036Q

Audi A3 8V Sportback Front Passenger's Door Loom Wiring Harness 8V4971036H

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2129009908

Mercedes SLK R172 Fuse Box Relay Control Unit SAM Module A2129009908

€127.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 4KE907468C

Audi A6 C8 Q7 4M Gateway Interface Control Unit Module ECU 4KE907468C

€237.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9294209

BMW X3 F25 Radio CD Player Head Unit Navigation Sat Nav CIC Alpine 9294209

€142.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2049057501

Mercedes W204 W212 Dashboard Light Sun Solar Sensor Unit A2049057501

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. CPLA-15G590-AB

Range Rover L405 Wiper Motor Control Unit Module CPLA-15G590-AB

€28.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2129000217

Mercedes W212 Radio Head Unit Navi CD Player Control Unit A2129000217

€256.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8510221-3

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 CAS3 + Key

€151.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2044406135

Mercedes W204 Door Harness Loom Cable Wiring Rear Right O/S A2044406135

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8594489

BMW X1 F48 Mini F55 F56 F57 Battery Cable Starter-Base B+ 8594489

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2215408235

Mercedes W221 Door Wiring Front Left Right N/O/S Harness Loom A2215408235

€28.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2466200514

Mount Support Mercedes W176 Battery Bracket Holder A2466200514

€23.95

Free delivery: Mar 6 – 11

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Part no. 8678974

Engine Cable BMW F40 X1 F48 Mini F55 F56 Injector Wiring Loom Harness 8678974

€56.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 2754241-1

BMW MINI Cooper R55 R56 R57 R60 Engine Computer Mount Support Bracket Holder

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2229002109

Mercedes W205 W222 Door Module Control Unit Rear Right O/S A2229002109

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9270500

BMW X3 E83 PDC Parking Ultrasonic Sensor Angled Schwarz

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6913389

BMW X3 X5 Z4 E53 E83 E85 6 Disc CD Changer Multichanger Without Magazine

€37.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2129001929

Mercedes W176 Keyless Control Module Unit ECU A2129001929

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8S0035466

Audi TT FV 8S Premium Loudspeaker System Amplifier Bang & Olufsen 8S0035466

€1,329.95

Free delivery: Mar 6 – 11

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Part no. A2075454440

Mercedes-Benz E-Class A207 Convertible Control Unit Module Bracket Trunk

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9187541

BMW Z4 E89 ECU Body Control Module H3 Junction Box 9187541

€37.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 4G0907637K

Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K

€56.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8572418-2

BMW X3 F25 Diesel 2.0dX 184HP N47N Engine ECU Kit DDE 8572418 Key CAS4 Automatic

€170.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8K0907064KG

Audi Q5 8R Body Control Module ECU Control Unit 8K0907064KG

€56.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2479001306

Mercedes W177 W247 SAM Module Body Comfort Control Unit A2479001306

€113.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2219005404

Mercedes R231 Seat Memory Control Unit Module Front Right A2219005404

€379.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8514577

BMW X3 F25 Diesel N47N Engine Gearbox Wiring Loom Harness 8514577

€42.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2219009903

Mercedes-Benz S-Class W221 Rear Door N/O/S Control Unit Module A2219009903

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2044405935

Mercedes W204 Door Card Harness Loom Cable Wiring Front Left N/S A2044405935

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 02E911023H

Audi A3 Starter Motor Engine Diesel 02E911023H

€37.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 95230-4H200

Hyundai H-1 iLoad Relay Module Control Unit ECU 95230-4H200

€113.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. FV6T-14324-BBB

Ford Transit Connect Mk2 Starter Earth Ground Wire Cable FV6T14324BBB

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2125455640

Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A6081550035

Mercedes W177 Alternator Mounting Bracket Carrier A6081550035

€66.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2661541202

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

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9287756

Loudspeaker Centre BMW F25 F15 Central Woofer Audio Speaker 9287756

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 130002613

BMW 5 X5 7 Series E60 E60N E61 E65 E66 E67 E70 Drive Longitudinal Seat Adjust

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2189058500

Mercedes CLS X218 Antenna Amplifier Rear Aerial Control Module A2189058500

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2229001909

Mercedes W205 W222 Door Module Front Right O/S Control Unit ECU A2229001909

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A2709000900-8

Mercedes W246 B180 270.910 122HP ECU Wiring Loom Harness Cable Plug A2709000900

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 9337200

BMW 4 Series F32 F32N LCI Cable Loom Door Driver's Side Wiring Harness 9337200

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8K0915181E

AUDI A4 B8 Battery Negative Cable Clamp Control Module Terminal 8K0915181E

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8506281

BMW E81 E87 E90 LCI 116d 316d 118d 318d N47 Engine ECU DDE 8506281 Manual

€28.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A1779006715

Mercedes W177 Wireless Charger Centre Console Phone Charging Module A1779006715

€123.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A0009058104-1

Mercedes W176 W205 W246 GLC C253 Front Bumper Sensor Radar Unit A0009058104

€279.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 8K0907063AG

Audi A4 B8 Onboard Supply Control Unit Comfort 8K0907063AG

€47.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 3Q0907338E

Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338E

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 3452285

BMW X3 Series E83 Boardmonitor Central Information Display Screen 6,5"

€265.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 7521116

Starter BMW E90 Petrol N52 N53 Engine Starter Motor Unit 7521116

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. FK72-9D370-AF

Land Rover Discovery Sport L550 Diesel Fuel Pump Module FK72-9D370-AF

€37.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A1644407110

Mercedes W164 Wiring Loom Cable Harness Door Rear Left Right A1644407110

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 7P5971162FT

Porsche Cayenne 92A Front Door Wiring Harness Loom Driver's Side 7P5971162FT

€32.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 6958446

BMW E65 E66 E67 Control Unit Door Front Passenger Side Module ECU 6958446

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. A1729051301

Mercedes SLK R172 Roadster Antenna Amplifier Control Module A1729051301

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 02Z911023G

VW Volkswagen Touran 1T 1.4 TSI Starter Motor Petrol Engine Unit 02Z911023G

€23.95

Free delivery: Mar 6 – 11

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Part no. 8377654

BMW X5 E53 AmplifIer Trap Circuit Antenna Booster Diversity 8377654

€23.95

Free delivery: Mar 6 – 11

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Part no. 7543297

BMW 5 6 Series E60 E61 E63 E64 N52 Cable Alternator Starter Base B

€23.95

Free delivery: Mar 6 – 11

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Part no. 8485065

BMW G11 G12 G14 G15 G16 G30 G31 G32 G38 Positive Battery Cable Wire 8485065

€47.95

Free delivery: Mar 6 – 11

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Part no. 9226881

BMW 1 Series F20 F20N F21 F21N LCI Radio Aerial Antenna Amplifier AM/FM 9226881

€23.95

Free delivery: Mar 6 – 11

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Part no. 6902285

BMW E39 E87 E90 E91 Trigger Contact PDC Sensor Tweeter Gong 6902285

€23.95

Free delivery: Mar 6 – 11

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Part no. A2189000104

Mercedes CLS X218 Parktronic PDC Parking Assist Control Module A2189000104

€32.95

Free delivery: Mar 6 – 11

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Part no. 8510221-15

BMW E90 E91 LCI E92 330d Diesel N57 245HP ECU Engine Kit DDE 8510221 CAS3 + Key

€113.95

Free delivery: Mar 6 – 11

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Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery: Mar 6 – 11

If paid before 14:00

Part no. 141951253B-1

VW Volkswagen Audi Seat Skoda Relay Unit 4 Pins 12V 40A 141951253B

€23.95

Free delivery: Mar 6 – 11

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Part no. 8Y0035465

Audi A3 8Y A4 B9 Q5 FY Harman Speaker Amplifier Booster Sound System 8Y0035465

€47.95

Free delivery: Mar 6 – 11

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Part no. 6812250

BMW X1 F48 Door Wiring Loom Harness Cable Front Passenger Side N/O/S 6812250

€42.95

Free delivery: Mar 6 – 11

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Part no. 7L5035225S

Porsche Cayenne 955 Radio Aerial Antenna Amplifier Unit Rear Left N/S 7L5035225S

€32.95

Free delivery: Mar 6 – 11

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Part no. 5G0971175C

Volkswagen Golf Mk7 Rear Tailgate Boot Lid Wiring Adapter Loom 5G0971175C

€23.95

Free delivery: Mar 6 – 11

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Part no. 1K0971365CG

VW Volkswagen Golf Mk5 1K Seat Wiring Loom Cable Front Left N/S 1K0971365CG

€28.95

Free delivery: Mar 6 – 11

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Part no. A4475400082

Mercedes Vito W447 Fuse Box Cover Trim Panel Lid Housing A4475400082

€47.95

Free delivery: Mar 6 – 11

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Part no. 9149673

BMW 5 Series E60 E61 LCI Alarm System Unit Ultra Sonic Module 9149673

€23.95

Free delivery: Mar 6 – 11

If paid before 14:00

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Showing 1684-1782 of 13731 products

Key components of vehicle electrical systems

Original electrical parts for popular car brands

A car's electrical system is a complex system responsible for many key functions—from engine starting to lighting and on-board electronics. Modern cars are equipped with increasingly advanced electrical solutions that not only improve driving comfort but also enhance safety. At the Global Parts automotive store you will find a wide range of used car parts , such as alternators, starters, batteries, control modules and other automotive electrical systems that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini and many others.

How does a car's electrical system work?

A car's electrical system is a complex system that consists of several key components that work together to ensure the vehicle's reliable operation:

Battery accessories – Includes clamps, cables, holders and other components necessary for battery installation and maintenance.

Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
Starters – Key components of the starting system that enable the engine to be started.
Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
Relays – They control the flow of current in individual electrical circuits of the vehicle. A functioning electrical system is the basis for the reliability of your car, regardless of operating conditions.

Key technical parameters of electrical systems

Each of these components has specific technical parameters that determine its compatibility with the vehicle. For example, alternators installed in mid-range cars (e.g., Volkswagen Passat B6) typically have a capacity of 90 A to 140 A, while luxury vehicles (e.g., Mercedes S-Class) require alternators with a capacity exceeding 180 A. Starter motors vary in torque and operating voltage – the standard is 12 V, while 24 V starters are used in heavy-duty vehicles.

Why is it worth taking care of your car's electrical system?

Regular maintenance and replacement of electrical system components is key to reliability and road safety. Faulty components can lead to:

Problems starting the engine.
Failure of safety systems such as ABS or airbags.
Decreased efficiency of on-board equipment, e.g. lighting or air conditioning. At the Global Parts store we offer original used car parts , which have undergone detailed quality tests, ensuring their full functionality.

Symptoms of electrical system disruptions

In practice, electrical faults manifest themselves in a variety of ways. Drivers most often notice: dimming lights when parked, difficulty starting the engine, a voltage drop on the on-board computer, or air conditioning malfunctions. The table below presents typical correlations:

Symptom	Possible cause	Item to check
Difficulty starting the engine	Worn out starter or battery	Starter motor, battery
Dimming the lights	Inefficient alternator	Alternator, voltage regulator
Electric windows not working	Damaged relays or harness	Relays, wires

How to choose the right parts for your electrical system?

When choosing parts for the electrical system, such as alternators, starters or control modules, it is worth paying attention to:

Vehicle-specific fit – Every car make and model requires specific specifications. At Global Parts, you'll find parts that perfectly fit BMW , Audi , Mercedes , Volkswagen , Mini, and many more .
Technical condition – All used parts we offer are thoroughly checked to ensure their reliability.
Technical parameters – For example, alternators should have appropriate current output, adapted to the needs of your vehicle.

Compatibility and fit

The selection of electrical parts is based primarily on OEM part numbers, but matching them to specific parameters is equally important, including current, voltage, and the number of connector pins. For example, the 120A alternator used in the Audi A4 B7 differs significantly from the 150A version installed in the Audi A6 C6 . Therefore, using manufacturer catalogs or providing the VIN makes finding the right component much easier.

Why choose used electrical parts?

Purchase of used car parts This solution allows you to combine savings with quality. Why choose it?

Lower costs – Used alternators, starters and other parts are cheaper than new ones, but offer the same high quality.
Ecology – You support recycling and reduce waste by choosing used car parts .
Wide range – We offer electrical parts for the most popular car brands, so you can easily find what you need.

How to take care of your car's electrical system?

To ensure your electrical system operates reliably for years, it is worth remembering a few rules:

Regularly check the battery condition and charge level.
Take care of your cables and connectors – corrosion or damage can lead to voltage drops and failures.
Monitor the operation of the alternator and starter – early detection of problems will help avoid more serious breakdowns. If you have any problems, you will find the right car parts at Global Parts that will help restore your vehicle to full working order.

Step-by-step control procedures

Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
If in doubt, check the quiescent current consumption – it should not exceed 0.05–0.08 A.

FAQ - Frequently asked questions about electrical systems in cars

Question	Answer
What is a car electrical system?	This is a set of components responsible for powering and controlling all electrical functions in the car – from engine starting to multimedia.
What is an alternator for in a car?	The alternator generates electrical current when the engine is running and charges the battery.
What is the difference between a starter and an alternator?	The starter motor is used solely to start the engine, while the alternator is responsible for generating energy while driving.
How to check if the battery is working?	Just measure its voltage – a healthy battery should have approximately 12.6 V at rest and maintain a voltage above 10 V during cranking.
What are the most common symptoms of car electrical failure?	Problems starting the engine, flashing warning lights, power windows not working or dimming lights.
Do electrical parts from one model fit another?	Sometimes yes, but the key is to match it by VIN or OEM number – this guarantees compatibility.
How often should you check your electrical system?	It is worth performing basic diagnostics (battery, alternator) at least once a year or before a long trip.

Summary: Automotive electrical systems at Global Parts Automotive Store

Automotive electrical systems are the foundation of the reliability and comfort of every modern vehicle. By choosing the right parts, such as alternators, batteries, and control modules, you can ensure your car's full operational efficiency. 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 , or others, 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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