Automotive electrical systems
More informationAt 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. 03G903016F
Audi A4 B8 2.0 TDI Alternator Generator 150A Diesel Engine Unit 03G903016F
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Audi Q7 4L 3.0 TDI BUG 233HP Engine Contol Unit ECU 4L0910401T Automatic
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Audi A1 8X 1.2 TFSI CBZA Petrol Engine Alternator Generator 04C903023L
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Audi TT 8J Tyre Pressure Control Module Unit 8J0907274
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Audi A4 B8 2.0 TDI CNHC Diesel Alternator Generator 04L903017A
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Fuel Pump Control Audi A4 B9 A5 F5 A6 C8 Pump Unit Module ECU 4K0906121C
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Audi A4 B8 A5 8T A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181
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Audi A4 B7 Bluetooth Interface Phone Conectivity Control Module 8P0862335H
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Audi Q3 8U Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8U0971104E
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Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273H
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Audi A1 8X Positive Battery Overload Protection 8X0915459
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Audi A4 B7 Audio Sound System Amplifier Bose 355013 5631B6
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Audi A4 B8 2.0 TDI Diesel CAGA Engine Control Unit ECU Kit 03L906022MK Key
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Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA BCM2 Key Ignition
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Audi Q2 GA Q3 F3 Rear Boot Trunk Lid Tailgate Control Unit Module 5Q0959107AB
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Audi Q2 GA NAV Multimedia Navigation Display Screen MMI 8,25" 81A919605B
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Audi RS4 B8 Starter Motor Petrol Engine Electrical Unit Actuator 079911021G
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Audi A3 8V Engine Starter Motor Actuator Starter 0AM911023G
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Audi A4 B8 3.0 TDI CAPA Diesel Alternator 04L903017A
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Audi Q7 4L Front Seat Memory Control Module Unit ECU Left Right N/O/S 4F0959760D
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Audi A4 B7 2.0 TDI Negative Battery Terminal Earth Cable Lead 8E1971235L
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Audi A3 8Y A4 B9 A6 C8 Alternator Bracket Mount Holder 2.0 TDI 05L903143
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Audi Q7 4L 4.2 TDI Quattro Positive HV Battery Terminal Cable Harness 7L0971225
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Audi A6 C6 Door Module Front Driver's Side Control Unit ECU 4F0959793R
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Volkswagen Golf Mk8 Audi Q2 GA A3 8V 8Y 1.5 TSI Alternator 14V 140A 05E903026K
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Audi A1 8X Fuse Box Control Module Relay Box 6C0907361D
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Audi A3 S3 RS3 8Y Online Service Control Module Unit 8Y0035282B
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Audi TT 8J Audio Amplifier Radio Lear Sound Unit 8J0035223B
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Audi Q5 8R 2.0 TFSI CNCD 224HP Engine Unit ECU Kit 8R2907115 Key Ignition Manual
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Audi Q2 GA Rear Bumper PDC Parking Sensor Wiring Harness Loom 81A971104E
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Audi A3 8P 2.0 TDI CBAB 140HP Engine ECU Kit Ignition + Key 03L906022BQ Manual
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Audi Q7 4L A1 8X Negative Battery Cable Lead Monitoring Module 8K0915181D
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Fuse Relay Box Volkswagen Audi Skoda Seat Engine Bay Supply Unit 5Q0937125A
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Audi A3 8V A4 A5 B8 Alternator Generator Electrical Unit Diesel 03L903023K
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Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793M
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Audi Q7 4L Tyre Pressure Sensor Control Module Unit ECU 4F0910274C
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Audi A3 8V Headlight Range Cornering Adjustment Control Module 8V0907357A
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Audi A5 8T Onboard Comfort Supply Control Module Unit ECU 8K0907063AC
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Part no. 06M911021A
Audi SQ5 FY Starter Motor Engine Diesel Bosch 06M911021A
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Audi A8 4E S8 D3 Comfort Unit Control Module 4E0907289E
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Audi TT Mk2 8J Petrol Engine Fuel Pump Control Unit Module 3C0906093C
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Audi A5 8T Starter Motor 3.0 TDI CCWA Diesel 059911021D
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Audi A3 RS3 8Y Gateway Control Unit Module ECU GW2020 High 5WA907530Q
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Audi A4 B7 4.2 BBK Petrol Engine Alternator Generator 079903021E
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Audi A5 8T MMI Multimedia Interface Unit Module Control ECU 8T0035785A
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Audi A3 8P Door Window Lifter Regulator Motor Front Left N/S 8P0959802F
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Audi A3 8P Central Gateway Control Unit Module Relay ECU 1K0907530D
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Audi A3 8P 2.0 TDI 170HP CBBB Engine ECU Unit Kit 03L906022FD Key + Ignition
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Audi S5 8T Air Module Control Unit SRS System ECU 8K0959655B
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Audi A4 B6 4.2 BBK Petrol Engine Alternator Generator 079903021D
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Audi A4 B7 A6 C6 Motor Starter Unit 2.0 TDI Diesel Engine 03G911023
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Audi TT 8J Audio Amplifier Premium Sound Booster Control Unit Bose 8J0035223C
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Audi TT 8N Mk1 1.8T Petrol Engine Starter Motor Assembly 0001121022 02M911023
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Audi A8 D4 Battery Starter Alternator Harness Wiring Cable 4H0971224
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Part no. 04L903018A
Audi A4 B9 A5 F5 Q5 FY A6 C8 A7 C8 Alternator Generator Valeo 04L903018A
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Gateway Module Audi A3 8P Volkswagen Golf Mk6 Control Unit ECU 1K0907530AF
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Part no. 02T911023M
Audi A3 8P 1.6 MPI Petrol Starter Motor Engine 02T911023M
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Part no. 4E0915181C
Audi A8 4E S8 D3 Battery Voltage Control Module 4E0910181C 4E0915181C
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Audi Q3 8U 2.0 TDI CFGC 177HP Quattro Engine Control Unit ECU 03L906018PH
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Audi S3 8V 2.0 TFSI 300HP DNUE Quattro Engine Module ECU 06K907425J Automatic
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Part no. 8J0907115-1
Audi TT 8J 2.0 TFSI BWA 200HP Engine Module Control Unit ECU Set 8J0907115
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Audi Q5 FY 2.0 TFSI DAXB 252HP Quattro Engine ECU Kit Gateway + Key 06L907425C
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Audi A3 8V Diesel Engine Starter Alternator Electrical 14V 140A 03L903023
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Part no. 03G906018DN-2
Audi A3 8P 2.0 TDI 170HP BMN Engine Control Unit ECU 03G906018DN Automatic
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Part no. 03L903023K-1
Audi A3 8P A4 A5 B8 Q5 Alternator Generator Diesel Electrical Unit 03L903023K
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Part no. 3AA907801H
Audi Q3 8U Parking Brake Handbrake Module Control Unit 3AA907801H
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Audi A8 D4 4H Rear View Reverse Parking Camera Module Control Unit 4S0907441B
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Audi Q3 8U Air Module Control Unit SRS System ECU 8U0959655B
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Audi TT 8J 2.0 TFSI CESA Petrol Engine Starter Motor 02E911023S
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Audi A7 4G8 ESP Yaw Rate Module Control Unit Sensor ECU 4G0907637K
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Audi TT 8J 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06F971082F
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Audi A5 8T Multimedia Radio Sat Nav Screen Display Head Unit 8R0919604A
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Audi A8 D4 Alternator Generator Electrical Unit 3.0 TDI Diesel Engine 059903019H
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Audi A5 8T 2.0 TFSI CNCD Quattro 224HP Engine ECU Kit 8T2907115 Key Ignition
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Audi A1 8X 1.4 TSI CAXA 122HP Engine Control Unit ECU Kit 03C906016BG BCM + Key
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Audi Q3 8U 2.0 TDI Fuel Pump Sender Control Relay Module Unit ECU 5Q0906121F
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Audi A3 8V 2.0 TFSI DJHA Starter Motor 12V 02E911024M
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Audi Seat Skoda Volkswagen 1.4 TSI Petrol Alternator Generator Valeo 04E903023K
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Audi A3 8P Boot Trunk Subwoofer Rear Bass Speaker 8P3035382E
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AUDI S4 B8 Quattro Dynamic Suspension Electric Damper Control Module 8K0907364A
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Audi A6 C6 Body Control Comfort Unit Module BCM Convenience Unit 4F0907279B
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Audi Q3 8U Battery Positive Terminal Cable Plus Pole Wiring Harness 5N0971228F
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Audi A3 RS3 8Y Keyless Go Module ECU Entry Control Unit 5WA959436J
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Audi S3 8P 2.0 TFSI CDLA 265HP Engine ECU Kit Ignition + Key 8P0907115AP Manual
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Audi A6 C6 Adaptive Suspension Software Module Control Unit ECU 4F0910553D
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Part no. 059911024G
Audi A6 C6 ASB 3.0 TDI V6 Starter Motor 059911024G
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Part no. 8E0951253
Fuel Pump Module Audi A4 B7 A6 C6 Q7 4L Sender Control Relay Unit ECU 8E0951253
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Part no. 059903143K
Audi A4 B7 A6 C6 Alternator Bracket Pulley Mount Holder 2.7 3.0 TDI 059903143K
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Part no. 059903018TX
Audi A7 4G 3.0 TDI Alternator Generator 059903018TX
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Part no. 8P0907063AD
Audi TT 8J Body Comfort Control BCM Module Unit ECU 8P0907063AD
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Audi A6 C6 Front Right O/S Door Harness Cable Loom 4F1971030BD
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Audi A7 4G 3.0 TDI Fuel Pump Sender Control Relay Module Unit ECU 4G0906093H
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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 .