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. 8507893

BMW 1 2 3 Series F20 F21 F22 F30 F31 N47N Wiring Loom Harness Engine 8507893

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 5G0919605

VW Volkswagen Golf Mk7 Radio Control Head Unit CD Player 5G0919605

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Body Control Module Audi A4 B8 A5 8T BCM Comfort Control Unit 8K0907064DC

-5%

Part no. 8K0907064DC

Body Control Module Audi A4 B8 A5 8T BCM Comfort Control Unit 8K0907064DC

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€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Ignition Coil Mercedes W176 M270 Petrol Ignition Cable Connector A2701590042

-5%

Part no. A2701590042

Ignition Coil Mercedes W176 M270 Petrol Ignition Cable Connector A2701590042

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 9393667

BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9393667

€56.95

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Part no. 9165623

BMW X5 X6 Series E70 E71 Airbag Control ECU Unit Module 9165623

€23.95

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Part no. 9387262

FEM Module BMW F20 F21 F22 F30 F31 F32 F36 Body Control Unit ECU LR01 9387262

€113.95

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Part no. A2049002002

Mercedes W204 C207 Air Suspension Dynamic Level Control Unit Module A2049002002

€45.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9210857

BMW F01 F07 GT F10 F11 F13 Power Distribution Fuse Box Rear 9210857

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9169521

BMW E61 Centre Console Switch Cluster Control Unit ECU 9169521

€23.95

Free delivery - Thu, Dec 18

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Part no. 1Z0035161C

Skoda Octavia II Radio Control Autoradio Head Unit Stream MP3 1Z0035161C

€32.95

Free delivery - Thu, Dec 18

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Part no. A1636880035-1

Mercedes-Benz M-Class ML W163 1 Fuse Box Relay Lid Cover Trim A1636880035

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009001808

Mercedes W205 Park Assist PDC Trunk Control Unit Module A0009001808

€70.95

Free delivery - Thu, Dec 18

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Part no. 1167294

Mini Cooper One R50 R52 Fresh Air Recirculating Actuator 1167294 6NN007626

€23.95

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PDC Plug BMW F20 F22 F30 F32 Loom Socket Parking Sensor Wiring Harness

-5%

Part no. F20 F30 PLUG SOCKET LOOM PDC

PDC Plug BMW F20 F22 F30 F32 Loom Socket Parking Sensor Wiring Harness

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0009008214

Mercedes W177 W247 W447 W907 Fuel Pump Module Control Unit ECU A0009008214

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6917556-IB

Mini R50 R52 R53 Rear PDC Ultrasonic Parking Sensor Indi Blue 6917556

€23.95

Free delivery - Thu, Dec 18

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Part no. A2059006822

Module Mercedes W205 Relay Body Control Module Unit SAM BCM A2059006822

€28.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 3416765

Mini Cooper One R56 Antenna Amplifier Aerial Diversity Module 3416765

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8516246

BMW F10 LCI F20 F22 F30 F32 B37 Wiring Harness Engine Glow Plug Module 8516246

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9897879-4

Mini Cooper F55 F56 F60 B38C 1.5 136HP Engine Module ECU DME 9897879 Manual

€227.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A0014460340

Mercedes W245 B150 CDI OM266.920 Engine Control Unit Module ECU A0014460340

€32.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9176878

BMW E81 Body Control Module Unit BCM ECU L2 9176878

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A9079005303

Mercedes Sprinter W907 W910 Control Unit Module ECU A9079005303

€89.95

Free delivery - Thu, Dec 18

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Part no. 02Z911024Q

Audi A3 8V 2.0 TDI Quattro Starter Motor Engine Diesel Bosch 02Z911024Q

Product currently unavailable

Part no. A2479001306

Mercedes W177 W247 SAM Module Body Comfort Control Unit A2479001306

€113.95

Free delivery - Thu, Dec 18

If paid before 14:00

BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238

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Part no. 1378238-1

BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238

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€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9181455

BMW X1 Series E84 Antenna Aerial Noise Suppression Filter 9181455

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 5A41CA2

Air Module BMW F45 F46 Mini F55 F56 F60 ECU Control Unit 5A41CA2

€237.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7809999-2

BMW X3 E83 LCI 2.0d N47 Engine ECU Kit DDE 7809999 + EWS IV + Key Automatic

€284.95

Free delivery - Thu, Dec 18

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Part no. A2465410005

Mercedes W176 W246 Battery Cover Fuse Box Trim Panel Lid A2465410005

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

-5%

Part no. 4G8959795G

Audi A6 C7 Rear Door Control Module Unit ECU Left Right N/O/S 4G8959795G

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€23.95

€22.75

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Audi A4 B7 Front Crash Impact Air Module Sensor Unit Module 8E0959651A

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Part no. 8E0959651A

Audi A4 B7 Front Crash Impact Air Module Sensor Unit Module 8E0959651A

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€23.95

€22.75

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Part no. 8803368

Display Screen BMW F45 F46 Central Information Navigation Monitor 6,5" 8803368

€161.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6807634

BMW X5 F15 F20 F30 SRS Air Module Bag Control Unit Module ECU 6807634

€28.95

Free delivery - Thu, Dec 18

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Part no. 9115661

Mini Cooper One R50 R52 R53 Radio Boost CD Player Unit Head 9115661

€32.95

Free delivery - Thu, Dec 18

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Part no. A1775402111

Mercedes W177 Door Harness Loom Cable Wiring Rear Left Right N/O/S A1775402111

€23.95

Free delivery - Thu, Dec 18

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Part no. 03L906022NN

Audi A4 B8 2.0 TDI 143HP CAGA Diesel Engine Control Unit ECU Module 03L906022NN

€113.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 8507899

BMW F31 N47N 320d Engine Wiring Harness Module Diesel 8507899 8507896

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9201989

BMW X3 X5 X6 E60 E61 LCI E70 E71 F01 F02 F25 Rain Light Solar Sensor

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7579136

BMW Mini Cooper S R56 Automatic Gearbox ECU Control Unit EGS Module 7579136

€47.95

Free delivery - Thu, Dec 18

If paid before 14:00

Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459

-5%

Part no. 8J0915459

Audi A4 B8 A5 8T TT MK2 Positive Battery Terminal Cable Overload Fuse 8J0915459

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9240077

BMW E93 Cabrio Convertible Folding Top Roof ECU Module CTM 9240077

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 3425833

BMW X3 E83 2.5i 3.0i M54 Wiring Harness Cable Engine Ignition Module 3412247

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9159795

BMW X5 X6 E70 E71 Control Unit Air Module Bag ECU Unit Bosch 9159795

€23.95

Free delivery - Thu, Dec 18

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Part no. 9280622

FEM Module BMW F20 F21 F22 F30 F32 ECU Control Unit Fuse Box 9280622

€108.95

Free delivery - Thu, Dec 18

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Part no. 6940236

BMW E90 E91 E92 LCI AUX USB Lead Cable Wire 6940236

€23.95

Free delivery - Thu, Dec 18

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Part no. A2469016002-1

Display Screen Mercedes W176 W246 Central Information Dashboard Dash A2469016002

€80.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6822602

BMW F20 F21 F30 F31 Head Unit Basic Media Navigation Headunit 6822602

€132.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7464634

BMW X1 F48 Control Unit Remote Backrest Unlocking 7464634

€23.95

Free delivery - Thu, Dec 18

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Part no. A0009051910

Battery Cable Mercedes W177 W247 Negative Lead Terminal Harness A0009051910

€37.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7428425-3

Headlight Module BMW F20 F21 LCI Front Lamp Hedlamp LED Control Unit 7428425

€51.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 5Q0907530AM

Audi A3 8V VW Passat B8 Gateway Control Unit Module 5Q0907530AM

€28.95

Free delivery - Thu, Dec 18

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Part no. 3457050

Bluetooth Head Unit Mini Cooper R55 R56 R57 Radio Boost CD USB 3457050

€322.95

Free delivery - Thu, Dec 18

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Part no. 7794908

Preheater System Lead BMW E87 E90 E91 Diesel 7794908

€23.95

Free delivery - Thu, Dec 18

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Part no. 9377149

BMW 1 3 Series F20 F21 F30 F31 Telematic Control Unit Module 9377149

€23.95

Free delivery - Thu, Dec 18

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Part no. 9874338

Navigation Headunit BMW F20 F21 F30 F31 Mini F56 Head Unit Basic Media 9139895

€113.95

Free delivery - Thu, Dec 18

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Part no. 9167397

Mini Cooper R57 R58 R59 Hands Free Telephone Microphone 9167397

€23.95

Free delivery - Thu, Dec 18

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Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 5-Pin Black Relay Wiper Set 1472984

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Part no. 1472984-2

Mini R50 R52 R53 R55 R56 R57 R58 R59 R60 5-Pin Black Relay Wiper Set 1472984

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 5M0907357G

Audi Q3 8U Headlight Range Control Unit Module ECU 5M0907357G

€56.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 7899655

Rear Speaker BMW E63 E64 Door Card Loudspeaker Left Right N/O/S Logic 7 7899655

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Mini Cooper R55 R56 R57 Battery Cable Wiring Lead Power Positive 7571142

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Part no. 7571142-2

Mini Cooper R55 R56 R57 Battery Cable Wiring Lead Power Positive 7571142

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. A2048210651

Mercedes W204 Air Module Impact Crash Sensor Door A2048210651

€23.95

Free delivery - Thu, Dec 18

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Part no. A2229055804

Mercedes CLA C117 W176 W205 Aerial Antenna Amplifier Unit A2229055804

€23.95

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Part no. 9247468

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE III Junction Box 9247468

€23.95

Free delivery - Thu, Dec 18

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Part no. 7301554

BMW F10 F20 F30 F32 Control Unit For Fuel Pump 7301554

€23.95

Free delivery - Thu, Dec 18

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Part no. 9317175

BMW F20 F21 F30 F31 F32 Body Control Unit Module REM 9317175

€23.95

Free delivery - Thu, Dec 18

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Part no. 9167202

BMW E60 E61 LCI E63 E64 Body Gateway Module ECU Control Unit 9167202

€23.95

Free delivery - Thu, Dec 18

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Part no. A2229005315

Bluetooth Module Mercedes W176 W205 Multimedia Control Unit ECU A2229005315

€28.95

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Audi A4 B8 Air Module ECU Control Unit Crash Sensor 8K0959655G

-5%

Part no. 8K0959655G

Audi A4 B8 Air Module ECU Control Unit Crash Sensor 8K0959655G

Promo price

€23.95

€22.75

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Part no. A0994644206

Mercedes X253 Steering Wheel Contact Switch Control Plate A0994644206

€32.95

Free delivery - Thu, Dec 18

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Part no. A1729006613

Mercedes SLK R172 GPS Navigation System Screen Display A1729006613

€284.95

Free delivery - Thu, Dec 18

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Part no. 9152262

BMW X5 E70 X6 E71 Front Crash Impact Sensor Module 9152262

€23.95

Free delivery - Thu, Dec 18

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Part no. 7316186

BMW F30 F31 Xenon Adaptive Headlight Control Unit Module Lear TMS 7316186

€75.95

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Part no. 9143270

Mini Cooper One R50 R53 Loudspeaker Rear 65136801101 6801101

€23.95

Free delivery - Thu, Dec 18

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Part no. 7316536

BMW G30 G11 G12 Sunroof Sliding Roof Drive Unit Motor Actuator

€23.95

Free delivery - Thu, Dec 18

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Part no. 9138830

BMW E60 E61 E63 E64 LCi Fuse Box Power Distribution Rear 9138830

€23.95

Free delivery - Thu, Dec 18

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Mercedes W176 W246 Automatic Transmission Control Uni A0009003606

-5%

Part no. A0009003606

Mercedes W176 W246 Automatic Transmission Control Uni A0009003606

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 6915063

Ultra Sonic Module Mini R50 R53 Alarm System Sensor 6915063

€23.95

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Part no. 8376445

BMW X3 X5 E53 E83 E46 E39 LCI Switch Unit Steering Column 8376445

€28.95

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Part no. A1698207926

Mercedes W169 W245 Control Unit Front Left Door N/S Module A1698207926

€23.95

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Part no. 7792544

Mini One D Diesel W17 1ND 88HP Engine ECU Control Unit DDE 7792544 Manual

€23.95

Free delivery - Thu, Dec 18

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Part no. 9293313

BMW F20 F21 F30 F31 Rear Electronic Module Fuse Box Control Unit V5 REM 9293313

€23.95

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Ignition Coil Mercedes W176 W204 C207 W212 Petrol Cable Connector A2709060500

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Part no. A2709060500

Ignition Coil Mercedes W176 W204 C207 W212 Petrol Cable Connector A2709060500

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€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 9273584

Seat Belt Module BMW E92 F32 E61 Control Unit LCPA ECU 9273584

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A2139009406

Mercedes W213 Display Screen Information Navigation Dashboard A2139009406

€66.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 03C903024F

Alternator Audi A3 8P VW Passat B7 Engine Generator 1.4 TSI 03C903024F

€94.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. A6399003200

Mercedes Vito W639 Door Module Front Right O/S Control Unit ECU A6399003200

€37.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9227179

BMW 1 Series E81 Body Control Module ECU L2 PL2RR JBBFE Junction Box 9227179

€28.95

Free delivery - Thu, Dec 18

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Part no. 3454818

Mini Cooper R57 R57N LCI Cabrio Convertible Top Module Roof 3454818

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Engine Wiring BMW F25 F26 2.0dX B47 Loom Module Harness Cable Automatic 8570442

-5%

Part no. 8570442

Engine Wiring BMW F25 F26 2.0dX B47 Loom Module Harness Cable Automatic 8570442

Promo price

€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 9803844-1

Mini Cooper Countryman R58 R60 R61 Aerial Roof Antenna Base Module 9803844

€23.95

Free delivery - Thu, Dec 18

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Audi Q3 8U Gateway Interface Control Module Unit ECU 8U0907468G

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Part no. 8U0907468G

Audi Q3 8U Gateway Interface Control Module Unit ECU 8U0907468G

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€23.95

€22.75

Free delivery - Thu, Dec 18

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Part no. 6798872

BMW F10 F11 F30 F31 Wheel Electronics Module RDC 433MHZ Control Unit 6798872

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 9311296

Radio Player BMW F10 F11 F20 F21 F25 F30 F31 Alpine CD Champ 2 Head Unit 9311296

€28.95

Free delivery - Thu, Dec 18

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Part no. 9187534

BMW E81 Body Control Module Unit ECU L2 PL2 JBBFEII 9187534

€23.95

Free delivery - Thu, Dec 18

If paid before 14:00

Part no. 6857701

BMW 1 2 3 F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6857701

€23.95

Free delivery - Thu, Dec 18

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Part no. 8792148

Navigation Headunit BMW F20 F22 F30 Mini F55 F56 Head Unit Basic Media

€137.95

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Part no. 9237968

BMW F07 GT Central Gateway Module ECU Control Unit Lear ZGW-01 High 9237968

€66.95

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...

Showing 397-495 of 11957 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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