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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Part no. 8K0915181L

Audi A1 8X Negative Battery Terminal 8K0915181L

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0907247

Audi A4 B9 A5 F5 Keyless Entry Amplifier Control Box Module Antenna 4M0907247

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0907468D

Audi A4 B8 A5 8T Gateway Diagnostic Interface Control Unit Module ECU 8T0907468R

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0937125G-1

Seat Ateca Audi Q3 Mk2 TT 8S Fuse Relay Box Engine Bay Supply Unit 5Q0937125G

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G0937517

Audi A6 C7 Fuse Battery Junction Box Fuse Distribution Terminal Centre 4G0937517

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0959595M

Audi Q2 GA Front Door Module Control Unit Controller Passenger Side 5Q0959595M

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G8971095C

Audi A7 4G PDC Sensor Wiring Loom Harness Cable Front Bumper 4G8971095C

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907637A

Audi A5 8T Acceleration Yaw Rate Sensor Module Control Unit ECU 8K0907637A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0959655C

Audi Q7 4L Air Module Control Unit ECU Impact Sensor 4L0959655C

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W8971687M

Audi A5 F5 Sportback Door Wiring Harness Loom Rear Left N/S 8W8971687M

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 7PP941572AC

Audi A5 F5 Xenon Headlight Resistor Ballast Relay Module Unit 7PP941572AC

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907551

Audi A4 S4 B8 3.0 TFSI 333HP CAKA Quattro Engine Control Unit ECU 8K0907551

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0915181E

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

PLN 70.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959795G

Audi Q5 8R Rear Door Control Module Unit ECU Left Right N/O/S 8K0959795G

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0919603E-1

Audi A4 B8 Display Screen Sat Nav Navigation Dashboard 8T0919603E

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5WA919275B-KYG

Audi A3 S3 8Y PDC Parking Distance Sensor 5WA919275C Kyalami Green - Z6A

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0907637K

Audi A8L 4H Yaw Rate Domain Control Module Unit ECU 4H0907637K

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F1862335

Audi Q7 4L Bluetooth Interface Telephone Control Module ECU Unit 4F1862335

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0937132F

Vw Golf 5 Audi A3 8P Seat Leon 1P1 Fuse Box Cover Trim Panel Housing 1K0937132F

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8U0907468AC

Audi A1 8X Q3 8U Central Gateway Control Unit Module Relay ECU 8U0907468AC

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959793N

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793N

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0971160A

Audi A8 D4 Door Card Wiring Harness Loom Front Passenger Side 4H0971160A

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907401-1

Audi A5 8T 3.0TDI CAPA Quattro 240HP Engine ECU Kit Ignition 8K0907401 + Key

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8J0057186JX

Audi TT 8J Radio Head Unit CD Audio Player Control Unit 8J0035186J

PLN 180.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0907401M

Audi A8 4H 3.0 TDI CTBA Quattro 258HP Engine Control ECU 4H0907401M

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0971104S

Audi Q7 4L Rear Bumper Wiring Loom PDC Harness Parking Sensor 4L0971104

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0035415B

Audi A4 B8 Loudspeaker Front Door Left Right N/O/S Bang&Olufsen 8T0035415B

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 03L906018KD-1

Audi A4 B8 All Road 2.0 TDI CGLC 177HP Quattro Engine ECU Kit 03L906018KD Manual

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4E0941817A

Audi RS4 B8 Front Door Wiring Harness Loom Plug Socket 4E0941817A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G8959795J

Audi A7 4G8 Rear Door Module Control Module Unit Left Right N/O/S 4G8959795J

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G2907311C-1

Audi A7 4G8 3.0 TDI CRTE 218HP Quattro Engine ECU Kit 4G2907311C BCM2 + 2 Keys

PLN 2,849.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 059911024P

Audi A6 C7 A7 4G 2.0 TDI Starter Motor Diesel Engine Denso 059911024P

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8J0035223E

Audi TT 8J Coupe Roadster Ultrasonic Sound Control Module ECU Unit 8J0035223E

PLN 151.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0962131

Antenna Control Module Audi Q3 RSQ3 F3 Line Keyless Entry 5Q0962131

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 03L903017E

Audi A4 B8 A5 8T Q5 8R Quattro Alternator Generator 2.0 TDI 03L903017

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 80A906093A

Audi SQ5 FY Petrol Fuel Pump Relay Control Unit Module ECU 80A906093A

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959793R

Audi Q5 8R Door Module Front Left N/S Control Unit ECU Controller 8K0959793R

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 80A959655N

Audi Q5 FY Air Module Control Unit SRS System ECU 80A959655N

PLN 1,899.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0955557A

Audi A6 C6 Door Crash Impact Sensor Front Left Right N/O/S 4F0955557A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4E0919887M

Sat Nav Audi S8 D3 A6 C6 DVD Drive Navigation Control Unit 4E0919887M

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W5035021

Audi A4 B9 Multimedia MMI Radio SD Player Stereo Sat Nav Head Unit 8W5035021

PLN 2,849.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8P0035186AB

Audi A3 8P Multimedia Radio CD Player Head Unit 8P0035186AB

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0907355D

Audi A7 4G A8L 4H Ad Blue Control Module Unit ECU 4H0907355D

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0907159F

Audi A4 S4 B9 A5 S5 Impact Sound Actuator Control Module 8W0907159F

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8R0959655G

Audi Q5 8R Air Module Control Unit SRS System ECU 8R0959655G

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0910655B

Audi Q7 4L ECU Air Module Control Unit Crash Impact Sensor 4L0910655B

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0951253-1

Audi VW Volkswagen Seat Relay 643 Unit Module 4 Pins Set X2 8K0951253

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907064JE

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

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959792S

Audi A4 B8 Front Door Control Module Unit ECU Passenger Side 8K0959792S

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5WA907530Q

Audi A3 RS3 8Y Gateway Control Unit Module ECU GW2020 High 5WA907530Q

PLN 113.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959655N

Audi A4 B8 A5 8T Air Module Control Unit ECU 8K0959655N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1S0919275D-TOG

Audi Q3 8U PDC Parking Distance Control Sensor Tornado Grey-X7P 1S0919275D

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F1971693G

Audi A6 C6 Rear Door Wiring Harness Cable Loom Left Right N/O/S 4F1971693G

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W1907063CC

Audi A4 B9 Body Control Comfort Unit Module BCM Unit ECU 8W1907063CC

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0035056B

Audi A6 C6 Head Unit Radio CD Player Control Unit Module 4F0035056B

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L2910401B-1

Audi Q7 4L 3.0 TDI CRCA Quattro Engine ECU Kit Lock + Ignition + Key 4L2910401B

PLN 3,324.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0959793F

Door Module Audi A5 8T A4 B8 Control Front Right O/S Unit 8T0959793F

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0959795J

Audi A5 8T Rear Door Module Control Unit Module ECU Left Right N/O/S 8T0959795J

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06E911021D

Audi S5 8T A6 C7 Engine Starter Motor 3.0 TFSI Petrol CGWC 06E911021D

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 059911021K

Audi A5 8T 3.0 TDI CLAB Diesel Engine Starter Motor 059911021K

PLN 161.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0035454B

Audi A4 B9 Dashboard Loudspeakers Tweeter Speaker Front 4M0035454B

PLN 89.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8U0955559

Audi A1 8X A3 8V Windscreen Rain Sensor Control Unit 8U0955559

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0909606C

Crash Impact Sensor Volkswagen Golf Audi A4 Q7 A6 C6 Air Module Unit 1K0909606C

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8S0820043

Audi TT FV A/C Air Condition Climate Control Module Unit ECU 8S0820043

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G8959793G

Audi RS6 C7 Front Door Module Driver's Side Control Unit ECU 4G8959793G

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 443937105B

VW Volkswagen Audi Skoda Seat Little Fuse Amp 30A 12V 443937105A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0907401AM

Audi Q7 4M 3.0TDI DPXB Quattro 218HP Engine Control ECU 4M0907401AM Automatic

PLN 3,229.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8X0959793B

Audi A1 8X Door Module Control Unit Controller Front Driver's Side 8X0959793B

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0971349JQ

Audi A3 8P 1.2 TFSI CBZB Alternator Wiring Harness Cable Loom 1K0971349JQ

PLN 100.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 09G927750CA

Audi TT 8N Automatic Gearbox Module Control Unit ECU 09G927750CA

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0035874B

Audi A3 8V Multimedia Radio Sat Nav CD Player Head Unit 8V0035874B

PLN 949.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0971250P

Audi S3 8V Battery Wire Cable Negative Earth Lead 95Q0971250P

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0959792B

Audi Q7 4L Door Control Unit Module ECU Passenger Side 4L0959792B

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0959592H

Audi A4 B9 A5 F5 Front Door Module Control Unit ECU Passenger Side 8W0959592H

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8P0953519G

Audi TT 8J A3 8P Windscreen Wiper Stalk Switch Assembly 8P0953519G

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0035399C

Audi A3 8V A-Pillar Speaker Tweeter Front Left Right N/O/S 8V0035399C

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0971250AB

Audi A3 S3 8V Negative Battery Terminal Earth Cable Lead Wiring 5Q0971250AB

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0907451

Audi A3 8V Sun Light Solar Sensor Control Detector 8V0907451

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0419065D

Audi A4 B9 A5 F5 Power Steering Column Control Unit Module 8W0419065D

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 191906383C

Audi VW Volkswagen Seat Relay Unit Module 4 Pins 191906383C

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1S0919275D-MOG

Audi Q3 8U PDC Parking Distance Control Sensor Monsoon Grey Metallic - X7R

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0937517B

Audi RS4 B8 Positive Battery Distribution Terminal Junction Relay Box 8K0937517B

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06N907309A-1

Audi A4 B9 8W 35 TFSI DMSB 150 HP Engine ECU Kit Body + Key 06N907309A Automatic

PLN 1,614.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0035223AP

Audi A4 S4 B8 Audio Amplifier Sound Booster Control Unit Module 8T0035223AP

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0971365J

Audi A8 D4 Seat Cable Front Left Right N/O/S Seatbelt Warning Wiring 4H0971365J

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K2971228G

Audi A5 8T 1.8 TFSI Starter Alternator Harness Wiring Cable 8K2971228G

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8E0035111D

Audi TT 8J Radio Head Unit Navi CD DVD Player Changer 8E0035111D

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0959795N

Door Module Audi A4 B8 A6 C6 Rear Unit Control ECU Left N/S 4F0959795N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5QA919294C

Audi Seat Skoda Volkswagen PDC Parking Sensor Control Unit Module 5QA919294J

PLN 104.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0915459E

Audi A4 B9 Battery Positive Terminal Cable Plus Pole Wiring Harness 8W0915459E

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0959655E

Audi A6 C6 SRS Crash Air Module Safety ECU Unit Control 4F0959655E

PLN 127.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907064DP

Audi A4 B8 Body Control Module BCM Comfort Control Unit 8K0907064DP

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0959592K

Audi Q2 GA Door Module Control Unit Front Passenger Side 5Q0959592K

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0971235

Audi A6 C6 Negative Battery Terminal Cable Wiring 4F0971235

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 059903019H

Audi A8 D4 Alternator Generator Electrical Unit 3.0 TDI Diesel Engine 059903019H

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F5035225AJ

Audi A6 C6 Aerial Antenna Amplifier Right O/S FM Booster Unit 4F5035225AJ

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F1941824

Audi Q7 4L Fuse Box Control Module Connector Plug Socket Wiring Loom 4F1941824

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0035225N

Audi A8L 4H Antenna Aerial Amplifier 4H0035225N

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0959760F

Audi A8 D4 Front Seat Backrest Adjustment Module Left Right N/O/S 4H0959760F

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

...

Showing 397-495 of 1408 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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