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 Z4 E89 LED Footwell Control Module ECU 9286885

Part no. 9286885

BMW Z4 E89 LED Footwell Control Module ECU 9286885

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Door Cable BMW E93 Convertible Wiring Loom Front Cables Passenger Side 6926332

Part no. 6926333

Door Cable BMW E93 Convertible Wiring Loom Front Cables Passenger Side 6926332

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BMW E90 Xenon Footwell Light Control Module LCM PL2 FRM II 9166708

Part no. 9166708

BMW E90 Xenon Footwell Light Control Module LCM PL2 FRM II 9166708

Product currently unavailable

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Bluetooth Control BMW E60 E87 E90 Telematics Unit Module 9231091

Part no. 9231091

Bluetooth Control BMW E60 E87 E90 Telematics Unit Module 9231091

Product currently unavailable

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BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9286785

Part no. 9286785

BMW X1 E84 ECU Body Control Module Junction Box H2 PL2RR JBBFE IIIR 9286785

Product currently unavailable

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Engine Wiring BMW F20 F30 LCI 118d 318d 120d 320d B47 Loom Harness Cable 8595284

Part no. 8595284

Engine Wiring BMW F20 F30 LCI 118d 318d 120d 320d B47 Loom Harness Cable 8595284

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Mini Cooper S R55 R56 LCI N18 1.6 184HP ECU Kit DME 7619333 + CAS3 + Key Manual

Part no. 7619333-2

Mini Cooper S R55 R56 LCI N18 1.6 184HP ECU Kit DME 7619333 + CAS3 + Key Manual

Product currently unavailable

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Mercedes W204 Radio Control Function Button Knob Controller Unit A2048704658

Part no. A2048704658

Mercedes W204 Radio Control Function Button Knob Controller Unit A2048704658

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Mercedes R171 SLK200 Module Front Door Left Control Module Unit A1718200726

Part no. A1718200726

Mercedes R171 SLK200 Module Front Door Left Control Module Unit A1718200726

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BMW E88 E90 E92 Steering Switch Cluster Column Indicator Wiper Stalk 9123041

Part no. 9123041

BMW E88 E90 E92 Steering Switch Cluster Column Indicator Wiper Stalk 9123041

Product currently unavailable

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BMW 1 Series E87 LCI ECU Footwell Light Module BASIS PL2 FRM3R Lear 9230451

Part no. 9230451

BMW 1 Series E87 LCI ECU Footwell Light Module BASIS PL2 FRM3R Lear 9230451

Product currently unavailable

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BMW 1 3 E81 E87 E90 E91 E92 LCI Radio CD Professional Control Unit 9258170

Part no. 9258170

BMW 1 3 E81 E87 E90 E91 E92 LCI Radio CD Professional Control Unit 9258170

Product currently unavailable

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BMW X5 E53 Navigation System Sat Navi TV Video IBUS Module Unit 6968041

Part no. 6968041

BMW X5 E53 Navigation System Sat Navi TV Video IBUS Module Unit 6968041

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Mercedes W169 A160 266.920 95HP Engine Control Unit ECU Kit A2661531491 Key Lock

Part no. A2661531491-4

Mercedes W169 A160 266.920 95HP Engine Control Unit ECU Kit A2661531491 Key Lock

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BMW 1 3 Series E87 E90 Sunroof Sliding Roof Drive Unit Motor Actuator 6922257

Part no. 6922257

BMW 1 3 Series E87 E90 Sunroof Sliding Roof Drive Unit Motor Actuator 6922257

Product currently unavailable

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BMW Z4 E85 2.2i M54 170HP Engine Control ECU Kit DME 7541335 EWS3 + Key Manual

Part no. 7541335-5

BMW Z4 E85 2.2i M54 170HP Engine Control ECU Kit DME 7541335 EWS3 + Key Manual

Product currently unavailable

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

Part no. A6399003200

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

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 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6942675

Part no. 6942675

BMW 3 Z4 Series E46 E89 Mini R50 R52 Parking Control Module Unit PDC 6942675

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Ford Transit Connect Control Unit Central Door Locking Module ECU 9T1T-15K600-DD

Part no. 9T1T-15K600-DD

Ford Transit Connect Control Unit Central Door Locking Module ECU 9T1T-15K600-DD

Product currently unavailable

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Mini Cooper Cabrio R52 Convertible Folding Roof Module ECU 6960792

Part no. 6960792

Mini Cooper Cabrio R52 Convertible Folding Roof Module ECU 6960792

Product currently unavailable

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Mercedes SLK R171 PDC Parking Distance Control Unit Module Sensor A1715450032

Part no. A1715450032

Mercedes SLK R171 PDC Parking Distance Control Unit Module Sensor A1715450032

Product currently unavailable

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BMW 1 3 Series E81 E87 E90 E91 E92 Radio Professional CD Audio Player 9150109

Part no. 9150109-1

BMW 1 3 Series E81 E87 E90 E91 E92 Radio Professional CD Audio Player 9150109

Product currently unavailable

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Audi A3 8P PDC Parking Assistance Distance Control Module Unit ECU 8P0919475M

Part no. 8P0919475M

Audi A3 8P PDC Parking Assistance Distance Control Module Unit ECU 8P0919475M

Product currently unavailable

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Audi TT 8J Tyre Pressure Control Module Unit 8J0907274

Part no. 8J0907274

Audi TT 8J Tyre Pressure Control Module Unit 8J0907274

Product currently unavailable

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BMW F10 F20 F30 Petrol N20 Wiring Harness Motor Sensor System 2 Module

Part no. 7641661-2

BMW F10 F20 F30 Petrol N20 Wiring Harness Motor Sensor System 2 Module

Product currently unavailable

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BMW 1 E82 ECU Body Control Module L1 PL2RR JBBFE IIIR Junction Box 9226325

Part no. 9226325

BMW 1 E82 ECU Body Control Module L1 PL2RR JBBFE IIIR Junction Box 9226325

Product currently unavailable

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BMW E87 LCI E90 E91 120i 320i Petrol N43 170HP ECU KIT DME 7599881 CAS3 + 2 Keys

Part no. 7599881-19

BMW E87 LCI E90 E91 120i 320i Petrol N43 170HP ECU KIT DME 7599881 CAS3 + 2 Keys

Product currently unavailable

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Skoda Octavia 5E Sat Navi Stereo Radio Audio Head Unit Player 5E0919605B

Part no. 5E0919605B

Skoda Octavia 5E Sat Navi Stereo Radio Audio Head Unit Player 5E0919605B

Product currently unavailable

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BMW 3 6 X3 Series E46 E63 E83 MINI R50 R53 Control Unit Xenon Light 1307329074

Part no. 7176068-2

BMW 3 6 X3 Series E46 E63 E83 MINI R50 R53 Control Unit Xenon Light 1307329074

Product currently unavailable

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Ford Transit Battery Cover Fuse Box Trim Panel Lid YC15-10A687-A9W

Part no. YC15-10A687-A9W

Ford Transit Battery Cover Fuse Box Trim Panel Lid YC15-10A687-A9W

Product currently unavailable

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BMW X1 E84 Footwell Light Control Unit Module ECU Lear FRM3R PL2 9308365

Part no. 9308365

BMW X1 E84 Footwell Light Control Unit Module ECU Lear FRM3R PL2 9308365

Product currently unavailable

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Transmission Module Mercedes C117 AMG Petrol OM133 Gearbox Control A0009002010

Part no. A0009002010

Transmission Module Mercedes C117 AMG Petrol OM133 Gearbox Control A0009002010

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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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BMW E60 E61 E63 E64 E65 PDC Parking Control Module Unit ECU 6978232

Part no. 6954007

BMW E60 E61 E63 E64 E65 PDC Parking Control Module Unit ECU 6978232

Product currently unavailable

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BMW X5 E53 3.0d M57N 218HP ECU Engine Control Unit DDE 7794626 Automatic

Part no. 7794626

BMW X5 E53 3.0d M57N 218HP ECU Engine Control Unit DDE 7794626 Automatic

Product currently unavailable

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Engine Wiring Mini R55 R56 N12 Loom Harness Injection Valve Ignition 7585946

Part no. 7585946-1

Engine Wiring Mini R55 R56 N12 Loom Harness Injection Valve Ignition 7585946

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BMW E81 E87 E90 E91 E92 6-disc CD Changer 9133083

Part no. 9133083-1

BMW E81 E87 E90 E91 E92 6-disc CD Changer 9133083

Product currently unavailable

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Audi A4 B8 Radio Media Player Audio CD Head Unit Player Concert 8T2035186P

Part no. 8T2035186P

Audi A4 B8 Radio Media Player Audio CD Head Unit Player Concert 8T2035186P

Product currently unavailable

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Mercedes W211 CLS C219 Body Control Module BCM Temic A2115458432

Part no. A2115458432

Mercedes W211 CLS C219 Body Control Module BCM Temic A2115458432

Product currently unavailable

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Volkswagen Golf CD1 Alternator Engine Generator Valeo 05E903018G

Part no. 05E903018G

Volkswagen Golf CD1 Alternator Engine Generator Valeo 05E903018G

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BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE II 9176877

Part no. 9176877

BMW 3 Series E92 ECU Body Control Module Junction Box L1 PL2 JBBFE II 9176877

Product currently unavailable

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Mercedes-Benz CLK W208 Front Left Right Door Interior Handle Bowden Pull Cable

Part no. A2087600104

Mercedes-Benz CLK W208 Front Left Right Door Interior Handle Bowden Pull Cable

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Airbag Module BMW E46 X5 E53 Control Unit ECU Side Air Bag 6905491

Part no. 6905491

Airbag Module BMW E46 X5 E53 Control Unit ECU Side Air Bag 6905491

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BMW E90 LCI Footwell Light Control Module LCM LED Basis 9240530

Part no. 9240530

BMW E90 LCI Footwell Light Control Module LCM LED Basis 9240530

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VW Volkswagen Polo 6R Air Module Bag Control Unit 6R0959655K

Part no. 6R0959655K

VW Volkswagen Polo 6R Air Module Bag Control Unit 6R0959655K

Product currently unavailable

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BMW F30 F31 F32 F33 Central Information Screen Display 8,8" 9292248

Part no. 9292248

BMW F30 F31 F32 F33 Central Information Screen Display 8,8" 9292248

Product currently unavailable

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Audi A4 B8 Body Control Module BCM Comfort Control Unit 8K0907064DP

Part no. 8K0907064DP

Audi A4 B8 Body Control Module BCM Comfort Control Unit 8K0907064DP

Product currently unavailable

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Trunk Lid Module BMW F31 F15 F16 F36 Control Unit Rear Tailgate Lift 7343935

Part no. 7343935

Trunk Lid Module BMW F31 F15 F16 F36 Control Unit Rear Tailgate Lift 7343935

Product currently unavailable

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Mercedes C253 Body Control Module Temic A2539005906

Part no. A2539005906

Mercedes C253 Body Control Module Temic A2539005906

Product currently unavailable

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Mini R55 R56 R57 Halogen Headlights Control Unit Module ECE 0420295

Part no. 420295

Mini R55 R56 R57 Halogen Headlights Control Unit Module ECE 0420295

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 Mini Cooper Convertible R57 Footwell Light Module ECU PL3 FRM II 3455701

Part no. 3455701-1

BMW Mini Cooper Convertible R57 Footwell Light Module ECU PL3 FRM II 3455701

Product currently unavailable

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Mini Cooper E60 E70 E93 R55 R56 R60 IBS Negative Battery Lead

Part no. 9164346

Mini Cooper E60 E70 E93 R55 R56 R60 IBS Negative Battery Lead

Product currently unavailable

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BMW X3 E83 LCI N47 Diesel Cable Alternator Starter Base B 3453587

Part no. 3453587

BMW X3 E83 LCI N47 Diesel Cable Alternator Starter Base B 3453587

Product currently unavailable

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BMW F20 F22 F30 Sound Speaker Front Door Audio Mid Range Stereo HiFi 9288769

Part no. 9288769

BMW F20 F22 F30 Sound Speaker Front Door Audio Mid Range Stereo HiFi 9288769

Product currently unavailable

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Land Rover Range Sport L320 3.0 D Alternator Mount Support Bracket AH3210239BA

Part no. AH3210239BA

Land Rover Range Sport L320 3.0 D Alternator Mount Support Bracket AH3210239BA

Product currently unavailable

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Vauxhall Opel Astra G Display Screen Multifunction Unit Dashboard 009133265

Part no. 009133265

Vauxhall Opel Astra G Display Screen Multifunction Unit Dashboard 009133265

Product currently unavailable

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BMW G11 G12 G30 G31 Battery Cable Plus Pole Power Positive Wire Red 9350064

Part no. 9350064

BMW G11 G12 G30 G31 Battery Cable Plus Pole Power Positive Wire Red 9350064

Product currently unavailable

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VW Volkswagen LT 35 Immobilizer Control Unit Module Temic 2D0953257

Part no. 2D0953257

VW Volkswagen LT 35 Immobilizer Control Unit Module Temic 2D0953257

Product currently unavailable

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Roof Module BMW Z4 E85 Roadster Cabrio Convertible Folding Top 7199819

Part no. 7199819

Roof Module BMW Z4 E85 Roadster Cabrio Convertible Folding Top 7199819

Product currently unavailable

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Alarm Power Siren Horn BMW E36 E38 E39 E46 E53 E83 Alarm System Unit 8383152

Part no. 8383154

Alarm Power Siren Horn BMW E36 E38 E39 E46 E53 E83 Alarm System Unit 8383152

Product currently unavailable

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BMW F45 LCI 220i B48C 192HP Petrol Engine ECU DME 9897880 + BDC + Key Manual

Part no. 9897880

BMW F45 LCI 220i B48C 192HP Petrol Engine ECU DME 9897880 + BDC + Key Manual

Product currently unavailable

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AUDI S4 B8 Quattro Dynamic Suspension Electric Damper Control Module 8K0907364A

Part no. 8K0907364A

AUDI S4 B8 Quattro Dynamic Suspension Electric Damper Control Module 8K0907364A

Product currently unavailable

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BMW E93 ECU Body Control Module H1 PL2 JBBFE 61359153966 9153966

Part no. 9153966

BMW E93 ECU Body Control Module H1 PL2 JBBFE 61359153966 9153966

Product currently unavailable

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Chrysler Grand Voyager Diesel Engine 2.8 CRD Starter Motor 04868860AA

Part no. 04868860AA

Chrysler Grand Voyager Diesel Engine 2.8 CRD Starter Motor 04868860AA

Product currently unavailable

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BMW E60 E87 E90 Telematics Bluetooth Control Unit Module ECU 9174261

Part no. 9174261

BMW E60 E87 E90 Telematics Bluetooth Control Unit Module ECU 9174261

Product currently unavailable

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Mercedes W211 Xenon Headlight Level Control Module 5DV 008 290-00

Part no. 5DV-008-290-00

Mercedes W211 Xenon Headlight Level Control Module 5DV 008 290-00

Product currently unavailable

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Mini R50 R53 Body Control Unit Basic Module Controller BCM BC1RD 6934293

Part no. 6934293

Mini R50 R53 Body Control Unit Basic Module Controller BCM BC1RD 6934293

Product currently unavailable

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BMW F20 F30 116i 316i N13 Engine ECU KIT DME 8603352 + FEM + Key Manual

Part no. 8603352-1

BMW F20 F30 116i 316i N13 Engine ECU KIT DME 8603352 + FEM + Key Manual

Product currently unavailable

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BMW E87 LCI E90 118i 318i N43 143HP ECU Control Kit DME 7583225 Automatic

Part no. 7583225-11

BMW E87 LCI E90 118i 318i N43 143HP ECU Control Kit DME 7583225 Automatic

Product currently unavailable

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Mercedes-Benz A-Class W176 CLA C117 Rear View Camera Control Module Unit ECU

Part no. A1179009101

Mercedes-Benz A-Class W176 CLA C117 Rear View Camera Control Module Unit ECU

Product currently unavailable

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BMW E81 E82 E87 E88 E89 E90 E91 E92 Radio Professional CD 9177199

Part no. 9177199

BMW E81 E82 E87 E88 E89 E90 E91 E92 Radio Professional CD 9177199

Product currently unavailable

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BMW F20 F21 F30 LCI G30 B38 B48 Starter Motor Engine Petrol 8621839

Part no. 8621839

BMW F20 F21 F30 LCI G30 B38 B48 Starter Motor Engine Petrol 8621839

Product currently unavailable

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Mini Cooper R55 R56 R57 Petrol N12 DME 7640005 Engine Control Unit ECU

Part no. 7640005

Mini Cooper R55 R56 R57 Petrol N12 DME 7640005 Engine Control Unit ECU

Product currently unavailable

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BMW E93 Convertible Rollover Control Controller Module Unit 9134734

Part no. 9134734

BMW E93 Convertible Rollover Control Controller Module Unit 9134734

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 E65 Light Control Unit Headlight Module Lear LM E6X MAN. LWR 6936996

Part no. 6936996

BMW E65 Light Control Unit Headlight Module Lear LM E6X MAN. LWR 6936996

Product currently unavailable

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BMW GT G32 ECU Body Domain Controller BDC Comfort Unit Module 8715804

Part no. 8715804

BMW GT G32 ECU Body Domain Controller BDC Comfort Unit Module 8715804

Product currently unavailable

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Volkswagen Tiguan 5N Air Module Control Unit ECU Module 5N0959655A

Part no. 5N0959655A

Volkswagen Tiguan 5N Air Module Control Unit ECU Module 5N0959655A

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 E91 ECU Body Control Module Unit H2 61359226331 9226331

Part no. 9226331-1

BMW 3 Series E91 ECU Body Control Module Unit H2 61359226331 9226331

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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Seat Module BMW F10 F11 Front Left N/S Control Unit SM MF/M - HL 9248565

Part no. 9248565

Seat Module BMW F10 F11 Front Left N/S Control Unit SM MF/M - HL 9248565

Product currently unavailable

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BMW F10 M5 F12 F13 M6 F07 X5 F15 Starter Motor 428000-8530 12V 7612815

Part no. 7612815

BMW F10 M5 F12 F13 M6 F07 X5 F15 Starter Motor 428000-8530 12V 7612815

Product currently unavailable

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Engine Wiring Mercedes W169 W245 Loom Cable Harness Injector Module A6401503733

Part no. A6401503733

Engine Wiring Mercedes W169 W245 Loom Cable Harness Injector Module A6401503733

Product currently unavailable

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Mini Cooper One R56 High SPEG DC/DC Fuse Distribution Box H5 3455236

Part no. 3455236

Mini Cooper One R56 High SPEG DC/DC Fuse Distribution Box H5 3455236

Product currently unavailable

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Rollover Controller BMW E88 E93 Mini R57 Convertible Control Unit Module 9201128

Part no. 9201128

Rollover Controller BMW E88 E93 Mini R57 Convertible Control Unit Module 9201128

Product currently unavailable

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Mini Cooper S R55 R56 LCI Engine Wiring Injection Loom Harness N18 8605894

Part no. 8605894

Mini Cooper S R55 R56 LCI Engine Wiring Injection Loom Harness N18 8605894

Product currently unavailable

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Mercedes W176 W204 W207 Fuel Pump Module Petrol Control Unit ECU A0009000104

Part no. A0009000104

Mercedes W176 W204 W207 Fuel Pump Module Petrol Control Unit ECU A0009000104

Product currently unavailable

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Mercedes W169 A200 M266.960 136HP Engine Control Unit ECU A2661534779 Automatic

Part no. A2661534779

Mercedes W169 A200 M266.960 136HP Engine Control Unit ECU A2661534779 Automatic

Product currently unavailable

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BMW E60 E81 E87 E90 E91 E92 CAS 3 ECU Control Unit Key Reading Module 6943834

Part no. 6943834

BMW E60 E81 E87 E90 E91 E92 CAS 3 ECU Control Unit Key Reading Module 6943834

Product currently unavailable

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Audi A3 8V VW Golf 5G Central Gateway Control Unit Module Relay ECU 5Q0907530AL

Part no. 5Q0907530AL

Audi A3 8V VW Golf 5G Central Gateway Control Unit Module Relay ECU 5Q0907530AL

Product currently unavailable

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BMW E87 E90 N45 116i Engine Control Unit DME 12147550688 7550688

Part no. 7550688

BMW E87 E90 N45 116i Engine Control Unit DME 12147550688 7550688

Product currently unavailable

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SAM Module Mercedes W203 Fuse Box Control Unit Relay A2035453501

Part no. A2035453501

SAM Module Mercedes W203 Fuse Box Control Unit Relay A2035453501

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Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 8780776

Part no. 8780776

Head Unit BMW F10 F20 F22 F30 Navigation Sat Nav GPS Unit High 8780776

Product currently unavailable

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Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454

Part no. 8W0035454

Audi A4 B9 Front Centre Dashboard Tweeter Speaker 8W0035454

Product currently unavailable

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BMW E60 LCI 530d X5 E70 3.0d M57N2 Engine Control Unit ECU DDE 8509035

Part no. 8509035

BMW E60 LCI 530d X5 E70 3.0d M57N2 Engine Control Unit ECU DDE 8509035

Product currently unavailable

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BMW F01 F07 F10 F11 Tyre Pressure RDC Control Unit Module 6857938

Part no. 6881474

BMW F01 F07 F10 F11 Tyre Pressure RDC Control Unit Module 6857938

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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