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. 8W0959593H

Audi A4 S4 B9 Front Door Control Module Unit Driver's Side 8W0959593H

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0919611-1

Audi A4 B8 Head Unit Media Player Controller Knob Switch Panel 8T0919611

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 079903805AF

Audi A5 S5 S5 8T 4.2 FSI Alternator Bracket Mount Holder 079903805AF

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0915181N

Audi A1 8X Negative Battery Terminal Cable Wiring 8K0915181N

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0907159J

Audi A4 B9 A5 F5 Impact Sound Actuator Control Module 8W0907159J

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4E0910217C

Audi Q7 4L Front Camera FAS Lane Assistance Control Unit 4E0910217D

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W6971036G

Audi A4 B9 A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971036D

PLN 180.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0919887M

Audi A5 8T Navigation System Car Sat Nav Computer Head Unit 4F0919887M

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0906093F

Fuel Pump Control Audi A3 8P VW Golf Mk6 Relay Module Unit ECU 12V 1K0906093F

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W6971030BF

Audi A5 F5 Front Door Wiring Harness Cable Passenger Side 8W6971030BF

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0959795B

Audi Q7 4L Door Control Module Unit ECU Rear Left N/S 4L0959795B

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4S0907441B

Audi A8 D4 4H Rear View Reverse Parking Camera Module Control Unit 4S0907441B

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8U0971104E

Audi Q3 8U Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8U0971104E

PLN 137.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0907283

Audi A6 C6 FL Tire Pressure Control Module 4F0907283

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8J0035456A

Antenna Amplifier Audi Q5 8R A6 C6 A5 8T Mobile Phone Module Unit 8J0035456A

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 1K0915181H

Audi A3 8P Negative Cable Battery Terminal Wiring Loom 1K0915181H

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959663

Audi A4 B8 A5 8T Voltage Stabilizer Converter Control Unit Module 8K0959663

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0959655F

Audi A4 B9 Air Module Crash Control Module Unit ECU 8W0959655F

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 81A035035G

Audi Q2 GA Sat Nav Multimedia Control Unit Module SD SIM MIB2 HIGH 81A035035G

PLN 3,324.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 420919275-PHB1

Audi A5 8T Parking Distance PDC Rear Ultra Sonic Sensor Phantom Black - Z9Y

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4G0907468F

Audi A6 C7 Central Getaway Control Unit Module ECU 4G0907468B

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 059903019N

Audi A5 8T Alternator Generator Electrical Unit 150A 14V 3.0 TDI 059903019N

PLN 379.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3C0915443A

Audi A3 8P Battery Box Tray Covering Housing Trim Holder Bracket 3C0915443A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 03L906018LA-1

Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA 2 Keys Ignition

PLN 854.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06K907425B-15

Audi S3 8V 2.0 TFSI DJHA 310HP Quattro Engine Unit ECU Kit 06K907425B Automatic

PLN 1,519.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F1941824B

Audi Q7 4L Fuse Box Control Module Connector Plug 4F1941824B

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q1937084C

Audi Q2 GA Module BCM Body Control Unit Module ECU 5Q1937084C

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0909131

Audi A8L 4H Ignition Keyless Entry Reader Coil Module 4H0909131

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W6907217A

Audi A5 F5 Front Windscreen Windshield Lane Assist Camera 8W6907217A

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 80A906093

Audi Q5 FY Fuel Pump Control Unit Module ECU Diesel Kuhnke 80A906093

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0035670T

Audi A8 D4 Reader Radio CD System Audio MMI Multimedia Head Unit 4H0035670T

PLN 1,757.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0971228K

Audi A3 8V 1.5 TFSI DPCA Positive Battery Cable Lead Clamp Wire Loom 5Q0971228K

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959655L

Audi A4 B8 Air Module Control Unit ECU Crash Control 8K0959655L

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F9035225D

Audi A6 C6 Antenna Amplifier Control Unit Module ECU 4F9035225D

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959793H

Audi A4 B8 A5 8T Door Module Control Front Unit ECU 8K0959793H

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0959793J

Audi A4 B8 Door Module Front Right O/S Control Unit Module ECU 8K0959793J

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0959595E

Audi A4 B9 Rear Door Control Module ECU Left Right N/O/S 8W0959595E

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0959795N

Audi A4 B9 Door Module Rear Left Right N/O/S Control Unit Module ECU 4M0959795N

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06H911024C

Audi A5 F5 45 TFSI QUATTRO Starter Motor Engine Denso 06H911024C

PLN 66.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0910289N

Comfort Module Audi A6 S6 RS6 C6 4F Convienience Unit ECU 4F0910289N

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0910655Q

Audi A6 C6 4F Control Unit Air Module ECU Bosch 4F0959655G

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0906259N-1

Audi A5 F5 45 TFSI DKNA 245HP Quattro Engine ECU Kit 8W0906259N Gateway + Key

PLN 1,424.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K9035225

Audi RS4 B8 Radio Aerial Antenna Amplifier AM/FM 8K9035225

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0907376H

Audi A3 S3 8V AMR Module Rear Suspension Damper Control Unit 8V0907376H

PLN 474.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T8971845

Audi A5 8T Fuse Box Relay Control Unit Module 8T8971845

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 3WA959354

Audi Q2 GA Impact Crash Control Sensor Module ECU 3WA959354

PLN 75.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0959107AB

Audi A8L 4H Tailgate Lift Boot Lid Control Unit Module Trunk 4H0959107AB

PLN 284.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0971349Q

Audi Q7 4M Electric Alternator Starter Positive Wiring Harness Cable 4M0971349Q

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0907279

Audi A5 8T Gateway Convenience Body Module Control Unit ECU 8K0907279C

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8R0907468T

Audi Q5 8R Gateway Module Control Unit ECU 8R0907468T 8R0907468C

PLN 80.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06L971627K

Audi TT FY 2.0 TFSI Petrol Fuel Injectors Wiring Harness 06L971627K

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8H0959985B

Audi Q7 4L Keyless Module ECU Door Lock Control Unit 8H0959985B

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 057911024

Audi A4 B9 A5 F5 Q7 4M Q5 FY VW Volkswagen Touareg Mk3 Starter Motor 057911024

PLN 160.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5QA919283E

Audi A3 8V Park Parking Assist PDC Distance Control Unit Module 5QA919283E

PLN 123.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0907801H

Parking Brake Module Audi A6 C7 A7 4G A8 4H Handbrake Control Unit 4H0907801H

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8F0035399

Audi A5 8F Door Speaker Tweeter Front Left N/S 8F0035399

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K590735700

Audi A5 8T Front Lamp Xenon Headlight Range Control Module 8K590735700

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4E0035654A

Audi A6 C6 MMI Multimedia Navigation Control Head Unit 4E0035654A

PLN 1,073.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 04L907309A-1

Audi A3 8V 2.0 TDI CRLB 150HP Engine ECU Kit Ignition + 2 Keys 04L907309A Manual

PLN 1,139.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8U0907468AQ

Audi A1 8X Central Gateway Control Unit Module Relay ECU 8U0907468AQ

PLN 85.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8D0951253

Audi Q7 4L Relay Unit Module 4 Pins 8D0951253

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 3Q0941329

Volkswagen Skoda Seat Audi Diesel Engine Adblue Module Control Unit 3Q0941329

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 1EA907376B

Audi A3 S3 8Y Rear Suspension Damper Module Control Unit ECU 1EA907376B

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 80A941823A

Audi Q5 FY Positive Battery Terminal Potential Distributor 80A941823A

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0907468H

Audi A4 B8 Gateway Interface Control Module Unit ECU 8T0907468H

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0959792G

Audi A8L 4H Front Door Control Module Left N/S Unit ECU 4H0959792G

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0947356E

Audi A5 S5 F5 Interior Door Panel Courtesy Light LED Wiring Harness 8W0947356E

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0959595N

Audi A4 B9 Door Module Rear Right Left N/O/S Control Unit 8W0959595N

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4KE959655H

Audi Q7 4M Air Module Control Unit ECU SRS Module Unit 4KE959655H

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4M0971104CB

Audi Q7 4M Rear Bumper PDC Parking Sensor Wiring Harness Loom 4M0971104CB

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0907357

Audi A3 8V Headlight Head Light Lamp Range Control Unit Module ECU 5Q0907357

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0971230FP

Battery Cable Audi A3 8V Starter Alternator Wiring Harness 5Q0971230FP

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0035398A

Audi A3 8V A-Pillar Speaker Tweeter Front Left Right N/O/S 8V0035398A

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0919604H-1

Audi A8L 4H Navigation Dashboard Display Hud Screen 4H0919604H

PLN 617.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W0971235A

Audi A4 B9 Negative Battery Terminal Cable Harness Wiring Loom 8W0971235A

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F9035225AA

Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8U0971104C

Audi Q3 8U Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8U0971104C

PLN 170.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8P0035503M

Audi A3 8P Bluetooth Antenna Module Control Unit 8P0035503M

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0959795Q

Audi A5 B8 8T Door Module Control Unit Left Right N/O/S 8T0959795Q

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0915181H

Audi A1 8X Negative Minus Battery Terminal Cable 1.4 TFSI CAXA Petrol 8K0915181H

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 5Q0907530AH

Audi A3 S3 RS3 8V Gateway Control Module GW MQB Mid Unit ECU 5Q0907530AH

PLN 70.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0951253

Audi A3 8P Multi Use Control Module Relay 4 Pin Light Green Unit 4H0951253

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 04L907309R-3

Audi A3 8V VW Golf VII 2.0 TDI 150HP CRLB Engine Unit ECU Kit 04L907309R Manual

PLN 569.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8A0937530

Audi A6 C6 Fuse Relay Box Module Unit Holder Bracket 8A0937530

PLN 142.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8H0035411D

Audi A3 8P Door Card Speaker Rear Left Right N/O/S Audio Speaker 8H0035411

PLN 61.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 06J971082D

Audi Q3 8U Engine Injector Module Wiring Harness Cable 2.0 TFSI 06J971082E

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8P0959655J

Audi A3 E 104 T Air Module ECU Sensor Control Unit 8P0959655J

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 04L907309AB-1

Audi Q3 8U 2.0 TDI DFTA 150HP Quattro Engine ECU Kit Ignition + Key 04L907309AB

PLN 664.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4H0907658B

Audi A3 8V A5 A6 A7 Air Quality Sensor Unit 4H0907658B

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8W1959595D

Audi Q5 FY Rear Door Control Module Unit Left Right N/O/S 8W1959595D

PLN 42.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 4F0959795P

Audi A6 C6 Rear Left N/S Door Lock Control Module Unit ECU 4F0959795P

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 4L0910289K

Audi Q7 4L Body Control Comfort Unit Module BCM Unit ECU 4L0907289K

PLN 759.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8V0971104

Audi A3 S3 8V Sportback Wiring Harness PDC Parking Sensor Rear Bumper 8V0971104

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8E0907637

Audi A4 B7 YAW Sensor ESP Rotation Rate Acceleration Control Unit 8E0907637

PLN 47.95

Delivery - Mon, Nov 24

If paid before 14:00

Part no. 8K0919475T

Audi A5 8T PDC Parking Distance Control Module Unit Valeo 8K0919475T

PLN 237.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 059911024K

Starter Motor AUDI Q7 4L VW Touareg MK2 3.0 TDI Diesel Starter 059911024K

PLN 189.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 80C919616

Audi Q5 FY Multimedia Volume Control Button Switch Knob Head Unit 80C919616

PLN 94.95

Free delivery - Mon, Nov 24

If paid before 14:00

Part no. 8T0919603F

Audi A4 B8 AV10NEO Display Screen Radio Multimedia Navigation Sat 8T0919603F

PLN 189.95

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

...

Showing 298-396 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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