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 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 9134662

Part no. 9134662

BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 9134662

Product currently unavailable

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Audi A5 F5 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8W6971104A

Part no. 8W6971104A

Audi A5 F5 Rear Bumper PDC Parking Sensor Wiring Harness Loom Cable 8W6971104A

Product currently unavailable

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Sound Speaker BMW F30 F31 F32 F33 HiFi System Mid-range Unit 9264944

Part no. 9264944

Sound Speaker BMW F30 F31 F32 F33 HiFi System Mid-range Unit 9264944

Product currently unavailable

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BMW 7 E65 E66 Front Bumper PDC Ultrasonic Sensor Schiefergruen Slate Green 449

Part no. 2241239-SGM

BMW 7 E65 E66 Front Bumper PDC Ultrasonic Sensor Schiefergruen Slate Green 449

Product currently unavailable

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Mercedes-Benz M-Class ML W163 Relay 4-Pin Black Hella A0025421519

Part no. A0025421519

Mercedes-Benz M-Class ML W163 Relay 4-Pin Black Hella A0025421519

Product currently unavailable

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Cable Wiring BMW E81 E87 Petrol N43 Positive Battery Lead Petrol 116i 118i 120i

Part no. 9125030

Cable Wiring BMW E81 E87 Petrol N43 Positive Battery Lead Petrol 116i 118i 120i

Product currently unavailable

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BMW X3 X5 E53 E83 Four Wheel Drive Transfer Box Control Unit Module 7599883

Part no. 7599883

BMW X3 X5 E53 E83 Four Wheel Drive Transfer Box Control Unit Module 7599883

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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Mercedes-Benz A B W169 W245 Starter Alternator Battery Lead Cable A1694402805

Part no. A1694402805

Mercedes-Benz A B W169 W245 Starter Alternator Battery Lead Cable A1694402805

Product currently unavailable

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BMW 3 Series E90 E92 E93 M3 Front Bumper PDC Loom Cables Wiring Set 9145026

Part no. 9145026

BMW 3 Series E90 E92 E93 M3 Front Bumper PDC Loom Cables Wiring Set 9145026

Product currently unavailable

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BMW E87 Body Control Module Unit L2 ECU 6983305 61356983305

Part no. 6983305

BMW E87 Body Control Module Unit L2 ECU 6983305 61356983305

Product currently unavailable

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Mercedes S205 C205 SAM Module Rear Body Comfort Control Unit ECU A2229006014

Part no. A2229006014

Mercedes S205 C205 SAM Module Rear Body Comfort Control Unit ECU A2229006014

Product currently unavailable

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Parking Ultrasonic Sensor Mini R50 R52 R53 PDC Unit Sensor Rear Pure Silver 900

Part no. 6989068-PS

Parking Ultrasonic Sensor Mini R50 R52 R53 PDC Unit Sensor Rear Pure Silver 900

Product currently unavailable

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Mercedes W169 W245 Distributor Box Front Control Unit Module A0055461240

Part no. A0055461240

Mercedes W169 W245 Distributor Box Front Control Unit Module A0055461240

Product currently unavailable

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Positive Cable Mercedes W906 OM651 Battery Starter Alternator Plus A9064402341

Part no. A9064402341

Positive Cable Mercedes W906 OM651 Battery Starter Alternator Plus A9064402341

Product currently unavailable

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VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 511 9 Pins 04L907282

Part no. 04L907282

VW Volkswagen Audi Seat Skoda Glow Plug Relay Unit Black 511 9 Pins 04L907282

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 7 Series E65 E66 6-fold CD Disc Changer Without Magazine 6923547

Part no. 6919474

BMW 7 Series E65 E66 6-fold CD Disc Changer Without Magazine 6923547

Product currently unavailable

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BMW 5 6 Series 1 E60 E61 E63 E64 Battery Cable Holder Mounting B Base 6932006

Part no. 6932006-1

BMW 5 6 Series 1 E60 E61 E63 E64 Battery Cable Holder Mounting B Base 6932006

Product currently unavailable

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Mercedes-Benz Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600604

Part no. A6397600604

Mercedes-Benz Vito W639 Front Left Door N/S Lock Bowden Pull Cable A6397600604

Product currently unavailable

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Alternator Mercedes W203 Diesel OM648 OM646 Engine ALternator 200A A0131540002

Part no. A0131540002

Alternator Mercedes W203 Diesel OM648 OM646 Engine ALternator 200A A0131540002

Product currently unavailable

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Audi A4 B7 A6 C6 Motor Starter Unit 2.0 TDI Diesel Engine 03G911023

Part no. 03G911023

Audi A4 B7 A6 C6 Motor Starter Unit 2.0 TDI Diesel Engine 03G911023

Product currently unavailable

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BMW 3 X3 Series E46 E83 Fuse Distribution Box 8364530

Part no. 8364530

BMW 3 X3 Series E46 E83 Fuse Distribution Box 8364530

Product currently unavailable

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BMW E90 Radio Professional CD Player 65126971703 6971703

Part no. 6971703

BMW E90 Radio Professional CD Player 65126971703 6971703

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

Part no. 1167294

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

Product currently unavailable

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Mercedes W212 Fuel Pump Module Control Unit A2129000306

Part no. A2129000306

Mercedes W212 Fuel Pump Module Control Unit A2129000306

Product currently unavailable

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BMW E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9176958

Part no. 9176958

BMW E81 E87 E90 E91 Mini R55 R56 DAB Radio Tuner Module 9176958

Product currently unavailable

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

Part no. 4F0910289N

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

Product currently unavailable

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Ford Focus Mk3 Fuse Box Relay Cover Cap Flap AV6T-14A076-AB

Part no. AV6T-14A076-AB

Ford Focus Mk3 Fuse Box Relay Cover Cap Flap AV6T-14A076-AB

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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Mercedes W164 Gateway Control Unit Gateway Module ECU A1645402601

Part no. A1645402601

Mercedes W164 Gateway Control Unit Gateway Module ECU A1645402601

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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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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Volkswagen VW Golf 1K Mk5 Fuse Box Engine Compartment Relay Unit 1K0937124K

Part no. 1K0937124K

Volkswagen VW Golf 1K Mk5 Fuse Box Engine Compartment Relay Unit 1K0937124K

Product currently unavailable

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BMW X5 E53 X3 E83 Control Unit Xenon Adaptive Headlight Ballast 6939069

Part no. 6939069

BMW X5 E53 X3 E83 Control Unit Xenon Adaptive Headlight Ballast 6939069

Product currently unavailable

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BMW E93 Xenon Footwell Light Module Control Unit ECU PL2 FRM II 9159808

Part no. 9159808-1

BMW E93 Xenon Footwell Light Module Control Unit ECU PL2 FRM II 9159808

Product currently unavailable

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BMW F20 F30 F31 LCI Earth Cable Battery Cable 8648003 12428648003

Part no. 8648003

BMW F20 F30 F31 LCI Earth Cable Battery Cable 8648003 12428648003

PLN 61.95

Free delivery: Mar 20

If paid before 14:00

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Air Module Mercedes W213 C238 C253 Control Unit ECU A2139008828

Part no. A2139008828

Air Module Mercedes W213 C238 C253 Control Unit ECU A2139008828

Product currently unavailable

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BMW E60 M-Audio CD Radio Player Head Unit Professional 9131710

Part no. 9131710

BMW E60 M-Audio CD Radio Player Head Unit Professional 9131710

Product currently unavailable

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BMW 5 X3 Series E60 E61 E83 Front PDC Parking Distance Sensor Orientblau Blue

Part no. 6989078

BMW 5 X3 Series E60 E61 E83 Front PDC Parking Distance Sensor Orientblau Blue

Product currently unavailable

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BMW 5 Series E60 E61 Wiring Drivers Side Loom Door Cables Front Right O/S

Part no. 6982348

BMW 5 Series E60 E61 Wiring Drivers Side Loom Door Cables Front Right O/S

Product currently unavailable

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Mercedes W169 W245 Door Control Module Front Left N/S A1699000500

Part no. A1699000500

Mercedes W169 W245 Door Control Module Front Left N/S A1699000500

Product currently unavailable

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BMW 3 Series E46 M47N Cable Alternator Starter Base B+ 7787581

Part no. 7787581

BMW 3 Series E46 M47N Cable Alternator Starter Base B+ 7787581

Product currently unavailable

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BMW E81 Light Module NSW Footwell Module PL2 FRM II 9159813

Part no. 9159813

BMW E81 Light Module NSW Footwell Module PL2 FRM II 9159813

Product currently unavailable

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BMW E46 Passenger Front Door Wiring Loom Cable Harness 6913078 6913080

Part no. 6913080

BMW E46 Passenger Front Door Wiring Loom Cable Harness 6913078 6913080

Product currently unavailable

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Mercedes SLK R172 GPS Navigation System Screen Display A1729006613

Part no. A1729006613

Mercedes SLK R172 GPS Navigation System Screen Display A1729006613

Product currently unavailable

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Mercedes W221 Gateway Control Unit Module ECU A2215408845

Part no. A2215408845

Mercedes W221 Gateway Control Unit Module ECU A2215408845

Product currently unavailable

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Mercedes W177 Steering Column Control Module A0999008701

Part no. A0999008701

Mercedes W177 Steering Column Control Module A0999008701

Product currently unavailable

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Mercedes W177 Glow Plug Relay Preglow Module Diesel OM654 A6549009900

Part no. A6549003300

Mercedes W177 Glow Plug Relay Preglow Module Diesel OM654 A6549009900

Product currently unavailable

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Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Part no. A2075401550-1

Mercedes W204 Battery Fuse Box Positive Distribution Terminal A2075401550

Product currently unavailable

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BMW E60 E90 Dashboard Onboard Monitor Display Screen 8.8" 6966925

Part no. 6966925

BMW E60 E90 Dashboard Onboard Monitor Display Screen 8.8" 6966925

Product currently unavailable

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BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 6926371

Part no. 9196936

BMW 1 3 Series E87 E90 E91 E92 Seat Control Unit Module ECU 6926371

Product currently unavailable

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Starter Motor BMW E60 E70 E87 E90 F10 F20 F30 N52 N53 Petrol Engine Unit NSM1504

Part no. 7521122-2

Starter Motor BMW E60 E70 E87 E90 F10 F20 F30 N52 N53 Petrol Engine Unit NSM1504

Product currently unavailable

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

Part no. 9247468

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

Product currently unavailable

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Mini Cooper One R50 R52 Alternator Generator 110A Benzin 7550997 7559223

Part no. 7550997

Mini Cooper One R50 R52 Alternator Generator 110A Benzin 7550997 7559223

PLN 123.95

Free delivery: Mar 20

If paid before 14:00

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Door Module Mercedes W169 W245 Front Left N/S Control Unit A1698202985

Part no. A1698202985

Door Module Mercedes W169 W245 Front Left N/S Control Unit A1698202985

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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BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9383700

Part no. 9383700

BMW X3 F25 Footwell Light Module Control Unit ECU FRM3 9383700

Product currently unavailable

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Radio CD BMW E87 E90 E91 LCI Professional Bluetooth Player Control Unit 9258173

Part no. 9258173

Radio CD BMW E87 E90 E91 LCI Professional Bluetooth Player Control Unit 9258173

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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BMW 5 6 X3 X5 Series E53 E60 E61 E63 E83 1 Cigarette Lighter Socket 6973036

Part no. 6973036-1

BMW 5 6 X3 X5 Series E53 E60 E61 E63 E83 1 Cigarette Lighter Socket 6973036

Product currently unavailable

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Audi A1 8X Positive Battery Overload Protection 8X0915459

Part no. 8X0915459

Audi A1 8X Positive Battery Overload Protection 8X0915459

Product currently unavailable

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Audi A6 C6 Yaw ESP Rate Sensor Module Unit Control ECU 4F0907637A

Part no. 4F0907637A

Audi A6 C6 Yaw ESP Rate Sensor Module Unit Control ECU 4F0907637A

Product currently unavailable

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BMW E91 ECU Body Control Module H4 Electronic Box PL2 JBBFE 6983307

Part no. 6983307

BMW E91 ECU Body Control Module H4 Electronic Box PL2 JBBFE 6983307

Product currently unavailable

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Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

Part no. A1698206726

Mercedes-Benz W245 ECU Control Unit Sensor Module Airbag A1698206726

Product currently unavailable

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BMW X1 E84 Max Brose Footwell Light Module Control Unit ECU Lear FRM PL2 9286887

Part no. 9286887

BMW X1 E84 Max Brose Footwell Light Module Control Unit ECU Lear FRM PL2 9286887

Product currently unavailable

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Mercedes Sprinter B907 Ignition Control Module Keyless A9079001705

Part no. A9079001705

Mercedes Sprinter B907 Ignition Control Module Keyless A9079001705

Product currently unavailable

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Mini Cooper Countryman R60 Fuse Distribution Box SPEG High 9813622

Part no. 9813622

Mini Cooper Countryman R60 Fuse Distribution Box SPEG High 9813622

Product currently unavailable

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BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

Part no. 7789980

BMW E46 M47N M57N Alternator Generator 150A Valeo 7789980

Product currently unavailable

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Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

Part no. A0061514501-1

Starter Motor Mercedes W204 W212 Sprinter W906 OM651 Diesel Engine A0061514501

Product currently unavailable

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Mercedes W211 W219 Navigation Reader DVD CD Player Control Unit A2118705226

Part no. A2118705226

Mercedes W211 W219 Navigation Reader DVD CD Player Control Unit A2118705226

Product currently unavailable

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Mercedes EQA H243 Relay High Voltage Performance DC 250 A Contactor A7899823000

Part no. A7899823000

Mercedes EQA H243 Relay High Voltage Performance DC 250 A Contactor A7899823000

Product currently unavailable

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Alternator Ford Transit MK7 Diesel 2.2 Tdci Bosch CC1T-10300-CC

Part no. CC1T-10300-CC

Alternator Ford Transit MK7 Diesel 2.2 Tdci Bosch CC1T-10300-CC

Product currently unavailable

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BMW E63 E64 Front Bumper PDC Loom Cables Wiring Set 6929148

Part no. 6929148

BMW E63 E64 Front Bumper PDC Loom Cables Wiring Set 6929148

Product currently unavailable

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Mercedes ML W166 GLE C292 Relay Current Power Limiter Fuse Box A1669067701

Part no. A1669067701

Mercedes ML W166 GLE C292 Relay Current Power Limiter Fuse Box A1669067701

Product currently unavailable

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Audi A5 8T Speaker Amplifier AMP Bang & Olufsen 8T1035223A

Part no. 8T1035223A

Audi A5 8T Speaker Amplifier AMP Bang & Olufsen 8T1035223A

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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BMW X1 F48 Mini F55 F56 LCI B+ Junction Terminal Power Distribution Box 8792232

Part no. 8792232

BMW X1 F48 Mini F55 F56 LCI B+ Junction Terminal Power Distribution Box 8792232

Product currently unavailable

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BMW X5 E70 Air Suspension Supply Control Unit Module ECU 6778966

Part no. 6778966

BMW X5 E70 Air Suspension Supply Control Unit Module ECU 6778966

Product currently unavailable

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Mercedes W211 W219 Earth Ground Cable Battery Wiring Loom Engine A2115420518

Part no. A2115420518

Mercedes W211 W219 Earth Ground Cable Battery Wiring Loom Engine A2115420518

Product currently unavailable

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Starter Motor BMW E60 E81 E87 E90 F20 Bosch 0986021500 7521123

Part no. 7521123-1

Starter Motor BMW E60 E81 E87 E90 F20 Bosch 0986021500 7521123

Product currently unavailable

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Mercedes W204 Steering Wheel Air Module Driver's Side Black A0008605903

Part no. A0008605903

Mercedes W204 Steering Wheel Air Module Driver's Side Black A0008605903

Product currently unavailable

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Mercedes W221 Cover Fuse Box Case Trim Panel Lid A2215401682

Part no. A2215401682

Mercedes W221 Cover Fuse Box Case Trim Panel Lid A2215401682

Product currently unavailable

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Audi A4 B8 2.0 TDI CAGA Diesel Engine Starter Motor Bosch Unit 03L911021C

Part no. 03L911021C

Audi A4 B8 2.0 TDI CAGA Diesel Engine Starter Motor Bosch Unit 03L911021C

Product currently unavailable

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Mini Cooper One R56 High PL3 SPEG H5 DC/DC Fuse Distribution Box 3455528

Part no. 3455528

Mini Cooper One R56 High PL3 SPEG H5 DC/DC Fuse Distribution Box 3455528

Product currently unavailable

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Mercedes W205 W213 10Ah 170A Auxiliary Additional Generator Battery A0009829508

Part no. A0009829508

Mercedes W205 W213 10Ah 170A Auxiliary Additional Generator Battery A0009829508

Product currently unavailable

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Audi Q2 GA Front Parking Sensor Assist Control Module Arrow Grey Z7W 5Q0919275B

Part no. 5Q0919275B-AGR

Audi Q2 GA Front Parking Sensor Assist Control Module Arrow Grey Z7W 5Q0919275B

Product currently unavailable

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Glow Plug Relay Mercedes W213 C238 Diesel OM654 Preglow Module A6549001300

Part no. A6549001300

Glow Plug Relay Mercedes W213 C238 Diesel OM654 Preglow Module A6549001300

Product currently unavailable

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Engine Wiring Harness Mercedes W203 W211 M271 Loom Wiring Cable A2711502433

Part no. A2711502433

Engine Wiring Harness Mercedes W203 W211 M271 Loom Wiring Cable A2711502433

Product currently unavailable

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Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012

Part no. A1669005012

Mercedes W166 Front Door Module Left N/S Control Unit ECU A1669005012

Product currently unavailable

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Mercedes W213 Mechatronic Automatic Gearbox Control Unit Module A7252701905

Part no. A7252701905

Mercedes W213 Mechatronic Automatic Gearbox Control Unit Module A7252701905

Product currently unavailable

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Starter Motor Audi Q3 8U Volkswagen Passat B7 Engine Starter Actuator 02E911024C

Part no. 02E911024C

Starter Motor Audi Q3 8U Volkswagen Passat B7 Engine Starter Actuator 02E911024C

Product currently unavailable

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Mercedes-Benz Sprinter W906 Fuse Box Unit Holder Bracket Frame A9065451640

Part no. A9065451640

Mercedes-Benz Sprinter W906 Fuse Box Unit Holder Bracket Frame A9065451640

Product currently unavailable

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BMW E60 E61 MINI R50 Rear Bumper PDC Ultrasonic Sensor Hyper Blue

Part no. 2240952

BMW E60 E61 MINI R50 Rear Bumper PDC Ultrasonic Sensor Hyper Blue

Product currently unavailable

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BMW F40 F45 Mini F55 F56 Front Suspension Strut Protective Cap Cable VDC 6876863

Part no. 6876863

BMW F40 F45 Mini F55 F56 Front Suspension Strut Protective Cap Cable VDC 6876863

Product currently unavailable

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BMW E90 ECU Body Control Module ECU H1 61359134479 9134479

Part no. 9134479

BMW E90 ECU Body Control Module ECU H1 61359134479 9134479

Product currently unavailable

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Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

Part no. A2711540802

Mercedes W203 W211 C209 M271 Petrol Alternator A2711540802

Product currently unavailable

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Audi Q7 4L Power Supply Battery Control Module Unit 4L0915181

Part no. 4L0915181

Audi Q7 4L Power Supply Battery Control Module Unit 4L0915181

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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