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. 5A1B272-1

Mini Cooper F60 SE ALL4 B38X 220HP Engine Control ECU DME 5A1B272 Automatic

€427.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7525696

BMW X5 E53 Ground Battery Cable Alternator Starter 7525696

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8W0906093D

Audi A4 B9 Fuel Pump Control Unit Module ECU 8W0906093D

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 80A035223A

Audi Q5 FY Sound System Audio Amplifier Amp Unit Bang & Olufsen 80A035223A

€332.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1698207426

Mercedes-Benz A B Class W169 W245 Door Control Unit Right O/S Rear A1698207426

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8510591

BMW E60 E87 E90 LCI 120d 320d 520d N47 Engine ECU DDE 8510591 Manual

€113.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9353421

BMW F11 LCI Body Control Module Unit V7 PL6 JBBFE III 9353421

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2044402607

Earth Ground Cable Mercedes W204 W207 Battery Wiring Loom Engine A2044402607

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 06E971627Q

Fuel Injector Wiring Audi S4 B8 A6 A7 C7 4G 3.0 V6 TFSI Wiring Cable 06E971627Q

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1765405508

Mercedes-Benz A-Class W176 Front Door Cable Wiring Loom Harness A1765405508

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8663284

BMW F20 F30 F31 LCI B38 ECU Basic DME Control Unit Automatic Gearbox 8663284

€313.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA

-5%

Part no. 4F9035225AA

Audi A6 C6 Antenna Amplifier Control Unit Module 4F9035225AA

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8C1T14A073BG

Ford Transit MK7 Fuse Box Body Control Module ECU BCM Unit 8C1T14A073BG

€42.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8373901

BMW 5 7 X5 E38 E39 E53 Steering Column Adjuster Switch Stalk 8373901

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A9069006303-1

Mercedes W906 Fuse Box SAM Module Control Unit ZGS Temic A9069006303

€89.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 03L906018RC-1

Audi Q3 8U 2.0 TDI CFGC Quattro Engine ECU Kit 03L906018RC Ignition + Key Manual

€189.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8S0907159B

Audi TT FV Acoustic Controller Control Module Unit ECU 8S0907159B

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 02E911024D

Volkswagen Golf Mk7 Audi A3 8V Engine Starter Motor Start Stop Denso 02E911024D

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. NU5T-15604-KACN

VW Volkswagen Amarok Mk2 BCM Body Control Module Control Unit NU5T-15604-KACN

€222.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8X0971845C

Audi A1 8X Fuse Box Relay Control Unit Module Bracket Holder 8X0971845C

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 4L0910441C

Audi Q7 4L Rear Reversing Camera Module View Control Unit ECU 4L0910441C

€94.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1635401230

Mercedes W163 Negative Battery Minus Terminal Lead Cable A1635401230

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1775401731

Mercedes W177 M282 Wiring Harness Battery Starter Motor Alternator A1775401731

€89.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi TT FV A3 8V Door Module Control Unit Front Right O/S Side ECU 5Q0959593D

-5%

Part no. 5Q0959593D

Audi TT FV A3 8V Door Module Control Unit Front Right O/S Side ECU 5Q0959593D

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9229007

BMW F10 Antenna Amplifier Diversity 868 MHZ 9229007

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

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

-5%

Part no. 06L971627K

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

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6929557

Air Module BMW E65 E66 Driver's Seat Sensor Control Unit 6929557

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 1J0971235S

Audi TT 8N HV Battery Negative Earth Terminal Harness Wiring Cable 1J0971235S

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Mercedes W211 W219 Alarm Control Module Unit ECU A2118209626

-5%

Part no. A2118209626

Mercedes W211 W219 Alarm Control Module Unit ECU A2118209626

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9194824

BMW Z4 E89 Convertible Roadster Air Module ECU Control Unit 9194824

€94.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7823420

BMW E60 E87 E90 LCI N47 120d 320d 520d ECU Control Unit DDE 7823420

€113.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7212916

Mini R57 Cabrio Convertible Wiring Set Loom Harness PDC Rear Bumper 7212916

€66.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 4F0907283

Audi A6 C6 FL Tire Pressure Control Module 4F0907283

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7488140

BMW F10 F20 F21 F30 F31 LCI SCR Control Module ECU Unit 7488140

€42.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8P4971693P

Audi A3 8P Door Wiring Harness Loom Rear Left Right N/O/S Cabling 8P4971693P

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1669000618

Mercedes-Benz A B Class W176 W246 Front Right Door O/S Control Unit Module ECU

€23.95

Free delivery - Tue, Dec 23

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

€189.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 98661819900

Porsche Boxster 986 Sunroof Control Relay Module 98661819900

€66.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1775408609

Door Wiring Mercedes W177 W247 Front Passenger Side Cable Harness A1775408609

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. MB3T-14A411-SLC

VW Volkswagen Amarok NF Wiring Harness Loom Cable MB3T14A411SLC

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A1 8X Door Module Front Right O/S Driver's Side Control Unit ECU 8X0959793K

-5%

Part no. 8X0959793K

Audi A1 8X Door Module Front Right O/S Driver's Side Control Unit ECU 8X0959793K

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 80A906093

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

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8704090

BMW F20 F21 F30 Mini F55 F56 HSD Cable HU CID Wiring Cable 8704090

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2124406207

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124406207

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8589158

Battery Cable BMW G01 G02 B47B B47D Alternator Base B+ Lead 8589158

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A9065400341

Battery Cable Mercedes Sprinter W906 Negative Lead Wiring Harness A9065400341

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6929556

BMW E65 E66 Driver's Seat Air Module Sensor Control Unit Module 6929556

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6866986

BMW F01 F02 LCI F06 F10 F11 F13 ECU ICM Control Unit Module Airbag 6866986

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2199001100

Mercedes W219 Head Unit CD Player Navigation COMAND Radio Audio Unit A2199001100

€379.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5Q0915181D

Audi A3 S3 8V Negative Battery Terminal Cable Harness Wiring Loom 5Q0915181D

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8656997

BMW X5 F15 X6 F16 Ground Cable Negative Battery Lead Wire 8656997

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2465400140

Mercedes-Benz A-Class W176 Equipment Electrical Cover Fuse Box A2465400140

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9149615

BMW E61 E65 E70 Telemetics Control Unit Bluetooth Control Unit Module 9149615

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A1729001906

Mercedes X218 CLS350 Communication Bluetooth Control Module A1729001906

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5F4971693

Audi A1 8X Door Window Switch Loom Cable Rear Left Right N/O/S 5F4971693

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 3454167-1

BMW X3 E83 Shark Roof Fin Antenna Aerial Module Unit 3454167 3436613

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7522284

Mini Cooper One R50 R52 W10 Battery Cable Plus Pole 7522284

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5E0971104B

Skoda Octavia Mk3 5E Rear Bumper Parking Sensor Wiring Harness Loom 5E0971104B

€70.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8W0971553

Audi A4 B9 Front Seat Side Air Module Wiring Harness Loom Cable 8W0971553

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8509105

BMW E90 E91 E92 LCI N47N Cable Alternator Starter Base B+ 8509105

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A9075402087

Mercedes W907 Starter Wiring Battery Alternator Cable Harness Loom A9075401305

€61.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2045458401

Mercedes W204 Fuse Box Terminal Connection Unit A2115452301

€222.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107D

-5%

Part no. 8W8959107D

Audi A5 F5 Rear Hatch Tailgate Boot Lid Control Module Unit ECU 8W8959107D

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9247081

BMW X1 E84 Wiring Loom Harness Passenger Side 9247081

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A0009004213

Adblue Module Mercedes W447 W906 Control Unit ECU A0009004213

€42.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9394665

BMW F10 Footwell Light Module Control Unit ECU 9394665

€113.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2055400428

Battery Wiring Mercedes GLC X253 C253 Diesel OM651 Starter Cable A2055400428

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9143823-1

BMW E88 E93 LCI ECU Air Control Unit Module Controller 9143823

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2139008822

Air Module Mercedes W213 C238 Control Unit Module ECU A2139008822

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2711501920

Engine Wiring Mercedes W204 C207 W212 M271 Harness Loom Cable A2711501920

€132.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5B4E028

Remote Control Receiver BMW F70 X5 G05 G60 U06 Mini F65 Radio Module 5B4E028

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2465409611

Mercedes-Benz A B Class W176 W246 Battery Surround Trim Box Bracket A2465409611

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A6569000200-1

Mercedes W213 E400d OM656.929 Diesel Engine ECU Kit A6569000200 Automatic

€569.95

Free delivery - Tue, Dec 23

If paid before 14:00

Mercedes CL 203 Automatic Gearbox Control Unit Module ECU A0015453916

-5%

Part no. A0015453916

Mercedes CL 203 Automatic Gearbox Control Unit Module ECU A0015453916

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 3448379

Mini R55 R56 R57 R58 R60 R61 Control Unit PDC Parking Sensor Module 3448379

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8678974

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

€56.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7601799

Earth Ground Cable BMW X3 F25 Battery Cable Engine Wiring 7601799

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

-5%

Part no. 9665162580

Peugeot Partner Citroen Berlingo 1.6 HDI Engine Wiring Cable Bracket 9665162580

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 3Q0907530BB-1

Audi Q2 GA Central Gateway Control Unit Module Relay ECU 3Q0907530BB

€99.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 98661510300

Porsche Boxster 986 Wiper Control Intermittent Relay 6 Pins 98661510300

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A6 C7 Single Horn Alarm Siren High Tone Control Unit Module 4H0951223

-5%

Part no. 4H0951223

Audi A6 C7 Single Horn Alarm Siren High Tone Control Unit Module 4H0951223

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2475402228

Mercedes W177 Recirculation Pump Wiring Loom Cable Harness A2475402228

€42.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6700003892

Smart Fortwo C453 Power Steering Column Control Unit Module 6700003892

€37.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 431951253H

Audi TT 8N A4 B5 A6 C5 A8 D2 Relay Control Unit Module 12V 4 Pins 431951253H

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Mercedes W221 Rear Seat Control Module Unit ECU A2218702086

-5%

Part no. A2218702086

Mercedes W221 Rear Seat Control Module Unit ECU A2218702086

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5E5035577B

Skoda Octavia 5E Antenna Amplifier Aerial Control Module Unit 5E5035577B

€28.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6850375-1

Speed Cluster Sensor BMW E87 LCI 130i E90 M3 E92 Yaw Rotary Rate Sensor 6850375

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8507908

BMW F20 Gearbox Transmission Harness Wiring Loom Manual 8507908

€56.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6973117

BMW 1 3 Series E81 E87 E90 E91 E92 E93 Parking Control Module Unit PDC 6973117

€99.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 9252636

BMW X1 E84 PDC Sensor Parking Control Module Unit ECU 9225822

€170.95

Free delivery - Tue, Dec 23

If paid before 14:00

Audi A1 8X Driver Side Door Module Front Control Unit Module ECU 8X0959793D

-5%

Part no. 8X0959793D

Audi A1 8X Driver Side Door Module Front Control Unit Module ECU 8X0959793D

Promo price

€23.95

€22.75

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 5K0962132A

Audi Q3 F3 Keyless Entry Amplifier Control Box Module Aerial Antenna 5K0962132A

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2229002014

Mercedes X253 Door Module Rear Right Control Unit A2229002014

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A0009062822-1

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

€104.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 7578020-7

BMW E60 E90 LCI 325i 525i N53 218HP Engine Control Unit ECU DME 7578020 Manual

€436.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. E87-E90-PLUG-SOCKET-LOOM-PDC

BMW E81 E82 E87 E88 E90 E91 E92 Plug Socket Loom PDC Parking Sensor

€23.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. A2124404851

Mercedes W212 Rear Bumper PDC Wiring Parking Sensor Loom Harness A2124404851

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 6867932

BMW F20 F21 F23 Mini Cooper F55 F56 Control Unit Trailer Tow Hitch 6867932

€66.95

Free delivery - Tue, Dec 23

If paid before 14:00

Part no. 8631634

BMW X5 F15 Earth Ground Cable Negative Battery Lead Wiring 8631634

€32.95

Free delivery - Tue, Dec 23

If paid before 14:00

...

Showing 3565-3663 of 12041 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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