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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BMW X5 E46 E53 Side Air Module Control Unit ECU 6912755 6962530

Part no. 6912755

BMW X5 E46 E53 Side Air Module Control Unit ECU 6912755 6962530

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Mini Cabrio R57 ECU Air Control Unit Module Controller 3454345

Part no. 3454345

Mini Cabrio R57 ECU Air Control Unit Module Controller 3454345

Product currently unavailable

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Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0959654

Part no. 1K0959654

Audi A3 8P Steering Wheel Position Angle Sensor Control Unit Module 1K0959654

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BMW E87 LCI ECU Body Control Unit Module Junction Box H2 9229878

Part no. 9229878-1

BMW E87 LCI ECU Body Control Unit Module Junction Box H2 9229878

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Mercedes-Benz A B E W176 W212 W246 Fuel Pump Module Control Unit A0009006207

Part no. A0009006207

Mercedes-Benz A B E W176 W212 W246 Fuel Pump Module Control Unit A0009006207

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BMW X5 E70 Suspension Module Self Leveling Air Supply Control Unit 6793163

Part no. 6793163

BMW X5 E70 Suspension Module Self Leveling Air Supply Control Unit 6793163

Product currently unavailable

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Mini Cooper S R52 R53 W11 Engine Wiring Loom Harness 7533103

Part no. 7533103

Mini Cooper S R52 R53 W11 Engine Wiring Loom Harness 7533103

Product currently unavailable

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

Part no. 8T0035415B

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

Product currently unavailable

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BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9324784

Part no. 9324784

BMW F20 F21 F22 F30 F31 F32 F36 Module Control Unit FEM 9324784

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BMW 1 3 5 7 X1 X5 X6 Series E60 E61 E65 E66 E67 E70 E71 E81 E87 E90 Alarm Siren

Part no. 6948392-3

BMW 1 3 5 7 X1 X5 X6 Series E60 E61 E65 E66 E67 E70 E71 E81 E87 E90 Alarm Siren

Product currently unavailable

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BMW E81 E82 E87 E88 E90 E91 E92 E93 Radio Professional CD 9242501

Part no. 9242501

BMW E81 E82 E87 E88 E90 E91 E92 E93 Radio Professional CD 9242501

Product currently unavailable

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Mini Cooper One R50 R52 R53 W10 1.6 Petrol Engine Starter Motor 4542789

Part no. 4542789

Mini Cooper One R50 R52 R53 W10 1.6 Petrol Engine Starter Motor 4542789

Product currently unavailable

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Central Information Display BMW F10 F11 On-Board Screen 10,25" 9247872

Part no. 9266385

Central Information Display BMW F10 F11 On-Board Screen 10,25" 9247872

Product currently unavailable

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BMW E81 E87 E91 Steering Switch Cluster Cruise Control Stalk 9110894

Part no. 9110894

BMW E81 E87 E91 Steering Switch Cluster Cruise Control Stalk 9110894

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BMW 3 Series E90 ECU Body Control Module H1 PL2 JBBFE Junction Box 9131776

Part no. 9131776

BMW 3 Series E90 ECU Body Control Module H1 PL2 JBBFE Junction Box 9131776

Product currently unavailable

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BMW E60 Light Control Module Unit Lear LM II E6X  LWR LCM 9137775

Part no. 9137775

BMW E60 Light Control Module Unit Lear LM II E6X LWR LCM 9137775

Product currently unavailable

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BMW 3 Series F30 Head Unit Basic Media Navigation Headunit 6822582

Part no. 6822582

BMW 3 Series F30 Head Unit Basic Media Navigation Headunit 6822582

Product currently unavailable

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BMW E60 E61 E63 E65 X5 E70 X6 E71 PDC Parking Control Module Module 6978232

Part no. 6978232

BMW E60 E61 E63 E65 X5 E70 X6 E71 PDC Parking Control Module Module 6978232

Product currently unavailable

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Body Control Unit BMW E46 E83 Basic Module GM5 Star12 6963026

Part no. 6963026

Body Control Unit BMW E46 E83 Basic Module GM5 Star12 6963026

Product currently unavailable

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BMW E60 E61 CCC CD Professional Navigation System Controller Control Unit

Part no. 6974913

BMW E60 E61 CCC CD Professional Navigation System Controller Control Unit

Product currently unavailable

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BMW X3 E83 LCI Light Module Control Unit ECU Lights LM II LWR 3450192

Part no. 3450192

BMW X3 E83 LCI Light Module Control Unit ECU Lights LM II LWR 3450192

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BMW 3 Series E90 E91 E92 325D M57N2 Diesel Automatic Engine Wiring Loom Harness

Part no. rhd-7801103

BMW 3 Series E90 E91 E92 325D M57N2 Diesel Automatic Engine Wiring Loom Harness

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Display Screen BMW F30 F31 F32 F33 Central Information 8,8" 6822626

Part no. 6822626

Display Screen BMW F30 F31 F32 F33 Central Information 8,8" 6822626

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BMW E82 E90 E92 LCI Antenna Amplifier Diversity 9187647

Part no. 9187647

BMW E82 E90 E92 LCI Antenna Amplifier Diversity 9187647

Product currently unavailable

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Distributor Box Mercedes W204 W212 W906 Front Block Control Unit A0045468240

Part no. A0045468240

Distributor Box Mercedes W204 W212 W906 Front Block Control Unit A0045468240

Product currently unavailable

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Mercedes W176 W207 W246 USB Interface Multimedia Adapter Connector A1728202100

Part no. A1728202100

Mercedes W176 W207 W246 USB Interface Multimedia Adapter Connector A1728202100

Product currently unavailable

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BMW E93 Cabrio ECU Body Control Module H3 Junction Box 9177985

Part no. 9177985-1

BMW E93 Cabrio ECU Body Control Module H3 Junction Box 9177985

Product currently unavailable

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Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Part no. A6395450301

Mercedes W639 Fuse Box Relay Control Unit Electric Module SAM A6395450301

Product currently unavailable

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BMW E60 E61 E63 E64 Parking Control Module Unit PDC 9185139

Part no. 9185139

BMW E60 E61 E63 E64 Parking Control Module Unit PDC 9185139

Product currently unavailable

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BMW E60 E61 Positive Battery Cable Plus Pole Lead 61129127768 9127768

Part no. 9127768

BMW E60 E61 Positive Battery Cable Plus Pole Lead 61129127768 9127768

Product currently unavailable

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Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

Part no. A2129004502

Mercedes W204 W207 Front Right Door Control Unit Module A2129004502

Product currently unavailable

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BMW 1 3 5 Series E87 LCI E90 E60 Hands Free Bluetooth Module High MULF2 9178898

Part no. 9178898

BMW 1 3 5 Series E87 LCI E90 E60 Hands Free Bluetooth Module High MULF2 9178898

Product currently unavailable

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BMW 1 3 Series E81 E87 E90 E91 E92 Radio CD Professional 9132216 65129132216

Part no. 9132216

BMW 1 3 Series E81 E87 E90 E91 E92 Radio CD Professional 9132216 65129132216

Product currently unavailable

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BMW 5 Series E60 E61 PDC Parking Sensor Front Carbonschwarz Black 6989071

Part no. 7964087

BMW 5 Series E60 E61 PDC Parking Sensor Front Carbonschwarz Black 6989071

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BMW E90 E91 E92 IBS Negative Minus Battery Lead Cable Wire 9164352

Part no. 9164352-1

BMW E90 E91 E92 IBS Negative Minus Battery Lead Cable Wire 9164352

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BMW F20 F21 F22 F30 Radio Professional CD Bluetooth Player 9272367

Part no. 9272367

BMW F20 F21 F22 F30 Radio Professional CD Bluetooth Player 9272367

Product currently unavailable

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BMW E87 E90 E91 E92 E93 Fuse Box Power Distribution Front 6906621

Part no. 6906621-1

BMW E87 E90 E91 E92 E93 Fuse Box Power Distribution Front 6906621

Product currently unavailable

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Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

Part no. A2469002603

Mercedes W176 W246 W166 Windscreen Windshield Rain Sensor Unit A2469002603

Product currently unavailable

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BMW F20 F21 F30 F31 Fuel Pump Delivery Control Unit Module 7450992

Part no. 7450992

BMW F20 F21 F30 F31 Fuel Pump Delivery Control Unit Module 7450992

Product currently unavailable

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Key Reading Module BMW E60 E87 E90 CAS 3 ECU Control Unit 6943830

Part no. 6943830

Key Reading Module BMW E60 E87 E90 CAS 3 ECU Control Unit 6943830

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BMW 5 6 Series E60 E61 E63 Sensor B-pillar Airbag Right O/S

Part no. 6945156

BMW 5 6 Series E60 E61 E63 Sensor B-pillar Airbag Right O/S

Product currently unavailable

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Audi A5 8T Electric Hand Parking Brake Control Unit ECU 8K0907801N

Part no. 8K0907801N

Audi A5 8T Electric Hand Parking Brake Control Unit ECU 8K0907801N

Product currently unavailable

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BMW E90 E91 E92 Professional CCC Navigation System Controller 9185536

Part no. 9185536

BMW E90 E91 E92 Professional CCC Navigation System Controller 9185536

Product currently unavailable

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BMW 1 3 Series E81 E87 E90 E91 E92 Radio CD Professional 65129132214 9132214

Part no. 9132214

BMW 1 3 Series E81 E87 E90 E91 E92 Radio CD Professional 65129132214 9132214

Product currently unavailable

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Alternator Mini R55 R56 R57 R57 R58 LCI Generator Petrol 7574365

Part no. 7574365

Alternator Mini R55 R56 R57 R57 R58 LCI Generator Petrol 7574365

Product currently unavailable

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MINI Countryman R60 Control Unit Fuse Distribution Box SPEG High 9811672

Part no. 9813620

MINI Countryman R60 Control Unit Fuse Distribution Box SPEG High 9811672

Product currently unavailable

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BMW 1 3 Series E81 E82 E84 E87 E88 E90 E91 E92 Power Distribution Box 6936653

Part no. 6936653

BMW 1 3 Series E81 E82 E84 E87 E88 E90 E91 E92 Power Distribution Box 6936653

Product currently unavailable

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Mini Cooper R50 R52 W10 1.6 Petrol Engine Control Unit ECU DME 7557395 Manual

Part no. 7557395

Mini Cooper R50 R52 W10 1.6 Petrol Engine Control Unit ECU DME 7557395 Manual

Product currently unavailable

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Mini Cooper R52 Cabrio Aerial Base Roof Antenna 6929760

Part no. 6929760

Mini Cooper R52 Cabrio Aerial Base Roof Antenna 6929760

Product currently unavailable

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Mini R55 R56 Radio Boost CD Player Head Unit 3448827

Part no. 3448827

Mini R55 R56 Radio Boost CD Player Head Unit 3448827

Product currently unavailable

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BMW E60 E61 Air Module ECU Control Unit Gateway Module 6943085

Part no. 6943085

BMW E60 E61 Air Module ECU Control Unit Gateway Module 6943085

Product currently unavailable

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Mini Cooper One R57 Footwell Light Module High ECU PL3 FRM II Lear 3450937

Part no. 3450937-1

Mini Cooper One R57 Footwell Light Module High ECU PL3 FRM II Lear 3450937

Product currently unavailable

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BMW 3 5 X5 Series E39 E46 E53 Automatic Gearbox Ecu Control Unit EGS 7518709

Part no. 7518709

BMW 3 5 X5 Series E39 E46 E53 Automatic Gearbox Ecu Control Unit EGS 7518709

Product currently unavailable

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Mini Cooper R55 R56 R57 LCI N47N 1.6 Diesel Engine Starter Motor 7823314

Part no. 7823314

Mini Cooper R55 R56 R57 LCI N47N 1.6 Diesel Engine Starter Motor 7823314

Product currently unavailable

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BMW E61 E65 Suspension Air Supply Compressor Control Unit

Part no. 6769834

BMW E61 E65 Suspension Air Supply Compressor Control Unit

Product currently unavailable

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BMW 5 Series E60 E61 Mini R50 R53 PDC Parking Ultrasonic Sensor Rear Cool Blue

Part no. 2240945

BMW 5 Series E60 E61 Mini R50 R53 PDC Parking Ultrasonic Sensor Rear Cool Blue

Product currently unavailable

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BMW X5 E70 ECU Body Control Module Unit JBBFEII PL4 LOW 9146036

Part no. 9146036

BMW X5 E70 ECU Body Control Module Unit JBBFEII PL4 LOW 9146036

Product currently unavailable

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BMW X5 E53 E60 E65 Integrated Relay Power Supply Module 7510638

Part no. 7510638

BMW X5 E53 E60 E65 Integrated Relay Power Supply Module 7510638

Product currently unavailable

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Tuner Box Mercedes W213 W205 W222 Digital Audio Control Unit DAB ECE A2229008911

Part no. A2229008911

Tuner Box Mercedes W213 W205 W222 Digital Audio Control Unit DAB ECE A2229008911

Product currently unavailable

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BMW E60 E61 E63 E64 E65 E66 Air Recirculation Control Sensor AUC

Part no. 6933052

BMW E60 E61 E63 E64 E65 E66 Air Recirculation Control Sensor AUC

Product currently unavailable

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BMW X5 E53 X3 E83 Four Wheel Drive Transfer Box Control Unit Module 7550891

Part no. 7550891

BMW X5 E53 X3 E83 Four Wheel Drive Transfer Box Control Unit Module 7550891

Product currently unavailable

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Steering Lock Module Mercedes W204 W207 W212 Control Unit A2045458132

Part no. A2045458132

Steering Lock Module Mercedes W204 W207 W212 Control Unit A2045458132

Product currently unavailable

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BMW 5 F10 F11 On-board Central Information Display Screen Monitor 6,5" 9289007

Part no. 9289007

BMW 5 F10 F11 On-board Central Information Display Screen Monitor 6,5" 9289007

Product currently unavailable

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Mercedes W203 W221 Rain Light Sensor Control Module A2218700092

Part no. A2218700092

Mercedes W203 W221 Rain Light Sensor Control Module A2218700092

Product currently unavailable

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Mercedes W212 W213 W205 W218 Positive Battery Tray Clamp A0009061505

Part no. A0009061505

Mercedes W212 W213 W205 W218 Positive Battery Tray Clamp A0009061505

Product currently unavailable

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On Board Navigation BMW E60 E61 E90 E91 Display Monitor Screen 6,5" 6962424

Part no. 6962424

On Board Navigation BMW E60 E61 E90 E91 Display Monitor Screen 6,5" 6962424

Product currently unavailable

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BMW MINI Cooper S R56 Rear Bumper PDC Cables Wiring Loom Set 9140177

Part no. 9140177

BMW MINI Cooper S R56 Rear Bumper PDC Cables Wiring Loom Set 9140177

Product currently unavailable

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2X Relay BMW E60 E87 E90 F10 F30 4 Pin Tyco Set Black 6901469

Part no. 6901469-1

2X Relay BMW E60 E87 E90 F10 F30 4 Pin Tyco Set Black 6901469

Product currently unavailable

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Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326

Part no. A0028201326

Mercedes SLK R171 Crash Sensor Air Bag Impact Module Control Unit A0028201326

Product currently unavailable

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BCM Module BMW E60 E63 E64 Body Control Module 6135 9114447

Part no. 9114447

BCM Module BMW E60 E63 E64 Body Control Module 6135 9114447

Product currently unavailable

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Mini R50 R53 Body Control Unit Basic Module BCM BC1RD 6976988

Part no. 6976988

Mini R50 R53 Body Control Unit Basic Module BCM BC1RD 6976988

Product currently unavailable

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Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401

Part no. A9069000401

Mercedes Sprinter W906 Door Module Front Right O/S Control Unit A9069000401

Product currently unavailable

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BMW Z4 E85 E86 Air Module ECU Control Unit Module 9118749

Part no. 9118749

BMW Z4 E85 E86 Air Module ECU Control Unit Module 9118749

Product currently unavailable

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BMW E90 LCI Footwell Light Control Module LCM LED Basis 9224595

Part no. 9224595

BMW E90 LCI Footwell Light Control Module LCM LED Basis 9224595

Product currently unavailable

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BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359267203 9267203

Part no. 9267203

BMW 3 Series E90 LCI Body Control Module H1 PL2RR JBBFE IIIR 61359267203 9267203

Product currently unavailable

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BMW 3 Series E90 E91 LCI Mini R55 R56 Tyre Pressure RDC Control Unit Module

Part no. 6868194

BMW 3 Series E90 E91 LCI Mini R55 R56 Tyre Pressure RDC Control Unit Module

Product currently unavailable

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BMW E87 LCI Max Brose Footwell Light Module Control Unit ECU FRM3R PL2 6827064

Part no. 6827064

BMW E87 LCI Max Brose Footwell Light Module Control Unit ECU FRM3R PL2 6827064

Product currently unavailable

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Rain Sensor Mercedes W204 W212 Windscreen Control Unit A2049014504

Part no. A2049014504

Rain Sensor Mercedes W204 W212 Windscreen Control Unit A2049014504

Product currently unavailable

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BMW E46 X3 E83 Power Distribution Fusebox Cover Fuse Box 8364542

Part no. 8364542

BMW E46 X3 E83 Power Distribution Fusebox Cover Fuse Box 8364542

Product currently unavailable

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Mercedes Universal TYCO Relay Module 12V V23134-B52-X309 A0025422319

Part no. A0025422319-1

Mercedes Universal TYCO Relay Module 12V V23134-B52-X309 A0025422319

Product currently unavailable

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Starter Motor Mercedes Sprinter W204 W211 W212 OM646 Diesel Engine A0061516201

Part no. A0061516201

Starter Motor Mercedes Sprinter W204 W211 W212 OM646 Diesel Engine A0061516201

Product currently unavailable

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BMW Mini Cooper R56 LCI Footwell Light Module High EKS ECU PL3 FRM3R 3456395

Part no. 3456395

BMW Mini Cooper R56 LCI Footwell Light Module High EKS ECU PL3 FRM3R 3456395

Product currently unavailable

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BMW 3 X3 E46 E83 Body Control Unit Module GM5 Star12 Lin High 12V 3454607

Part no. 3454607

BMW 3 X3 E46 E83 Body Control Unit Module GM5 Star12 Lin High 12V 3454607

Product currently unavailable

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BMW E81 E82 E87 LCI E88 E89 E90 E91 Radio Business CD 9210510

Part no. 9210510

BMW E81 E82 E87 LCI E88 E89 E90 E91 Radio Business CD 9210510

Product currently unavailable

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Radio Head BMW F20 F21 F22 F30 F31 Unit Basic Media Navigation Headunit 9399427

Part no. 9399427

Radio Head BMW F20 F21 F22 F30 F31 Unit Basic Media Navigation Headunit 9399427

Product currently unavailable

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BMW E46 E53 E83 EWS 3 III ECU Immobiliser Ignition Control Unit Module 6905667

Part no. 6905667

BMW E46 E53 E83 EWS 3 III ECU Immobiliser Ignition Control Unit Module 6905667

Product currently unavailable

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BMW 1 3 X1 Z4 Series E81 E87 E88 E89 E90 E91 E92 E93 Radio Business CD 6952296

Part no. 6952296

BMW 1 3 X1 Z4 Series E81 E87 E88 E89 E90 E91 E92 E93 Radio Business CD 6952296

Product currently unavailable

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BMW 1 Series 1 E81 E87 Wiring Loom Set PDC Rear Complete Harness Parking Sensor

Part no. E81 E87 Wiring Loom Set PDC rear

BMW 1 Series 1 E81 E87 Wiring Loom Set PDC Rear Complete Harness Parking Sensor

Product currently unavailable

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PDC Parking Sensor BMW F01 F10 F11 Front Rear Bumper Sophisto Grey 9270050

Part no. 9270050

PDC Parking Sensor BMW F01 F10 F11 Front Rear Bumper Sophisto Grey 9270050

Product currently unavailable

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Navigation Processor Mercedes W176 W212 Control Unit Module NTG 4.5 A1728100011

Part no. A1728100011-1

Navigation Processor Mercedes W176 W212 Control Unit Module NTG 4.5 A1728100011

Product currently unavailable

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Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001

Part no. A1669056001

Battery Cable Mercedes W176 W246 Negative Lead Wiring Harness A1669056001

Product currently unavailable

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Mercedes W203 W211 Parking Distance Sensor PDC Iridium Bright Silver

Part no. A0045428718-1

Mercedes W203 W211 Parking Distance Sensor PDC Iridium Bright Silver

Product currently unavailable

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BMW E87 Light Module Control ECU Unit LCM Footwell Module PL2 FRMFA 6977723

Part no. 6977723

BMW E87 Light Module Control ECU Unit LCM Footwell Module PL2 FRMFA 6977723

Product currently unavailable

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Relay Box BMW E60 E61 E63 E64 Rear Power Distribution Fuse 6906558

Part no. 6906558

Relay Box BMW E60 E61 E63 E64 Rear Power Distribution Fuse 6906558

Product currently unavailable

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BMW Mini Cooper R50 R53 1 Aerial Base Roof Antenna 6920279

Part no. 6920279-1

BMW Mini Cooper R50 R53 1 Aerial Base Roof Antenna 6920279

Product currently unavailable

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On-Board Screen BMW F20 F30 LCI Information Display Touch Monitor  8,8" 8709339

Part no. 8709339

On-Board Screen BMW F20 F30 LCI Information Display Touch Monitor 8,8" 8709339

Product currently unavailable

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BMW E46 E85 E87 E90 Petrol Alternator Generator BOSCH 110A 7532964

Part no. 7532964

BMW E46 E85 E87 E90 Petrol Alternator Generator BOSCH 110A 7532964

Product currently unavailable

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BMW 5 Series E60 LCI IBS Negative Battery Lead Cable Wiring Harness 9132249

Part no. 9132249

BMW 5 Series E60 LCI IBS Negative Battery Lead Cable Wiring Harness 9132249

Product currently unavailable

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BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9131780

Part no. 9131780

BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE 9131780

Product currently unavailable

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.
  1. Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
  2. Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
  3. Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
  4. Starters – Key components of the starting system that enable the engine to be started.
  5. Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
  6. Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
  7. Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
  8. Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
  9. 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:

SymptomPossible causeItem to check
Difficulty starting the engineWorn out starter or batteryStarter motor, battery
Dimming the lightsInefficient alternatorAlternator, voltage regulator
Electric windows not workingDamaged relays or harnessRelays, 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

  1. Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
  2. Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
  3. Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
  4. 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

QuestionAnswer
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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