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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Light Module BMW E90 LCI ECU LED NSW Control Unit PL2 FRM II 9204532

Part no. 9204532-1

Light Module BMW E90 LCI ECU LED NSW Control Unit PL2 FRM II 9204532

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Mercedes W212 OM651.924 E220CDI 170HP Engine ECU Kit + Key + Lock A6519003701

Part no. A6519003701-1

Mercedes W212 OM651.924 E220CDI 170HP Engine ECU Kit + Key + Lock A6519003701

Product currently unavailable

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BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9217853

Part no. 9217853

BMW 1 3 5 Series E60 E87 E90 CAS 3 ECU Control Unit Key Reading Module 9217853

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Hands Free Bluetooth Module BMW E81 E87 E90 E91 Electronics MULF2 9204545

Part no. 9204545

Hands Free Bluetooth Module BMW E81 E87 E90 E91 Electronics MULF2 9204545

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Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster A2038701689

Part no. A2038701689

Mercedes CL203 Antenna Amplifier Control Module Unit Aerial Booster A2038701689

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Mercedes GLE C292 ML W166 Door Control Module Rear Left N/S A1669006307

Part no. A1669006307

Mercedes GLE C292 ML W166 Door Control Module Rear Left N/S A1669006307

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Audi A4 B7 2.0 TDI Battery Cable Wiring Harness 8EO971824E

Part no. 8EO971824E

Audi A4 B7 2.0 TDI Battery Cable Wiring Harness 8EO971824E

Product currently unavailable

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Mini R60 Amplifier Control Unit HiFi Audio Harman Kardon R57 R58 R61 9239605

Part no. 9239605

Mini R60 Amplifier Control Unit HiFi Audio Harman Kardon R57 R58 R61 9239605

Product currently unavailable

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BMW 1 Series E82 Wiring Loom Set PDC Rear Complete Harness Parking Sensor

Part no. E82 Wiring Loom Set PDC rear

BMW 1 Series E82 Wiring Loom Set PDC Rear Complete Harness Parking Sensor

Product currently unavailable

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Mercedes-Benz M-Class ML W163 Pressure Regulation Valve Fuel A6110780149

Part no. A6110780149

Mercedes-Benz M-Class ML W163 Pressure Regulation Valve Fuel A6110780149

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BMW E87 E90 118i 318i N46 129HP ECU Control Unit Module DME 7565300 Automatic

Part no. 7565300-13

BMW E87 E90 118i 318i N46 129HP ECU Control Unit Module DME 7565300 Automatic

Product currently unavailable

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Engine Wiring BMW F10 M5 F12 M6 Loom Harness Injection Valve Cyl. 1-4 7843329

Part no. 7843329

Engine Wiring BMW F10 M5 F12 M6 Loom Harness Injection Valve Cyl. 1-4 7843329

Product currently unavailable

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BMW F20 F21 F30 LCI M140i 340i B58 Wiring Harness Motor Sensorsystem Module

Part no. 8639583

BMW F20 F21 F30 LCI M140i 340i B58 Wiring Harness Motor Sensorsystem Module

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BMW 3 Z3 Series E36 Electrical Fuse Relay Box Storage Trim 1387614

Part no. 1387614

BMW 3 Z3 Series E36 Electrical Fuse Relay Box Storage Trim 1387614

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BMW F20 120d F30 320d F36 420d LCI B47 190HP Engine ECU DDE 8473185 Manual

Part no. 8473185-5

BMW F20 120d F30 320d F36 420d LCI B47 190HP Engine ECU DDE 8473185 Manual

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BMW X1 E84 Parking Control Module Unit PDC ECU 9252637

Part no. 9252637

BMW X1 E84 Parking Control Module Unit PDC ECU 9252637

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BMW X5 E53 E81 E87 E90 LCI Battery Mounting Bracket Bolt Holder

Part no. 7631587-1

BMW X5 E53 E81 E87 E90 LCI Battery Mounting Bracket Bolt Holder

Product currently unavailable

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BMW X3 F25 Central Gateway Module Control Unit Lear 9312917

Part no. 9312917

BMW X3 F25 Central Gateway Module Control Unit Lear 9312917

Product currently unavailable

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BMW 5 7 X5 Series E53 E60 E61 E65 E66 Handset Phone Mobile EVEREST 6953468

Part no. 6953468

BMW 5 7 X5 Series E53 E60 E61 E65 E66 Handset Phone Mobile EVEREST 6953468

Product currently unavailable

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BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608

Part no. 8578609-1

BMW F20 F21 F30 F31 Diesel Alternator Generator 180A 8578608

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BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 9154358

Part no. 9154358

BMW E81 E87 E90 Hands-Free Electronics Charging Module MULF 9154358

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BMW X3 Z4 E83 E85 E86 Radio Business CD Player 65126939664 6939664

Part no. 6939664

BMW X3 Z4 E83 E85 E86 Radio Business CD Player 65126939664 6939664

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

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Seat Occupancy Sensor BMW E87 E90 E91 E92 Co Driver Mat Cable 6945898

Part no. 6945898

Seat Occupancy Sensor BMW E87 E90 E91 E92 Co Driver Mat Cable 6945898

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Opel Combo Corsa Display Screen Dashboard Multifunction Monitor Unit 009164455

Part no. 009164455

Opel Combo Corsa Display Screen Dashboard Multifunction Monitor Unit 009164455

Product currently unavailable

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Mercedes W204 Navigation CD Player Radio Sat Nav Head Unit A2049004711

Part no. A2049004711

Mercedes W204 Navigation CD Player Radio Sat Nav Head Unit A2049004711

Product currently unavailable

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Headlight Module BMW F07 F10 LEAR TMS Headlamp Control Unit Module 7258278

Part no. 7258278

Headlight Module BMW F07 F10 LEAR TMS Headlamp Control Unit Module 7258278

Product currently unavailable

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Mercedes ML W163 Fuse Box SAM Control Unit Module A1635450016

Part no. A1635450016

Mercedes ML W163 Fuse Box SAM Control Unit Module A1635450016

Product currently unavailable

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Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

Part no. 4F0959792E

Audi A6 C6 Front Passenger Side Door Left N/S Module Unit Control ECU 4F0959792E

Product currently unavailable

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Audi A5 8T Crash Impact Sensor Unit Module Air Unit 8K0955557B

Part no. 8K0955557B

Audi A5 8T Crash Impact Sensor Unit Module Air Unit 8K0955557B

Product currently unavailable

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BMW 5 6 Series E60 E63 E64 Body Control Module ECU Control Unit 6952665

Part no. 6952665

BMW 5 6 Series E60 E63 E64 Body Control Module ECU Control Unit 6952665

Product currently unavailable

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Audi A6 C7 PDC Parking Distance Control Module Unit ECU 4H0919475L

Part no. 4H0919475L

Audi A6 C7 PDC Parking Distance Control Module Unit ECU 4H0919475L

Product currently unavailable

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Audi Q2 GA Q3 F3 Rear Boot Trunk Lid Tailgate Control Unit Module 5Q0959107AB

Part no. 5Q0959107AB

Audi Q2 GA Q3 F3 Rear Boot Trunk Lid Tailgate Control Unit Module 5Q0959107AB

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BMW X3 F25 Holder Audio Amplifier Telephone Bracket Mount Trim 9188582

Part no. 9188582

BMW X3 F25 Holder Audio Amplifier Telephone Bracket Mount Trim 9188582

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BMW E60 Light Control Module Unit Lear LM E6X MAN.LWR Lear 6941589

Part no. 6941589

BMW E60 Light Control Module Unit Lear LM E6X MAN.LWR Lear 6941589

Product currently unavailable

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Mercedes W213 SD Card Garmin Map Pilot Navi Europe 2019 A2139062607

Part no. A2139062607

Mercedes W213 SD Card Garmin Map Pilot Navi Europe 2019 A2139062607

Product currently unavailable

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Battery Tray Citroen Relay Fiat Ducato Battery Housing Box Tray 1368035080

Part no. 1368035080

Battery Tray Citroen Relay Fiat Ducato Battery Housing Box Tray 1368035080

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Door Module Mercedes C219 Front Door Left N/S Control Module A2198201926

Part no. A2198201926

Door Module Mercedes C219 Front Door Left N/S Control Module A2198201926

Product currently unavailable

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BMW F20 F30 Head Unit Display Screen Sat Nav Navigation Set 033830N 10,25"

Part no. 033830N

BMW F20 F30 Head Unit Display Screen Sat Nav Navigation Set 033830N 10,25"

Product currently unavailable

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Door Module Mercedes W204 S204 Front Right O/S Control Unit A2048704426

Part no. A2048704426

Door Module Mercedes W204 S204 Front Right O/S Control Unit A2048704426

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BMW X3 F25 N47N Diesel Engine Wiring Loom Harness Cable 8513414

Part no. 8513414

BMW X3 F25 N47N Diesel Engine Wiring Loom Harness Cable 8513414

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Control Unit Mercedes W213 W217 Front Right O/S Door Control Module A2139002522

Part no. A2139002522

Control Unit Mercedes W213 W217 Front Right O/S Door Control Module A2139002522

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Mini Cooper One R50 R52 Automatic Gearbox Transmission Signal Control Module

Part no. 7531809

Mini Cooper One R50 R52 Automatic Gearbox Transmission Signal Control Module

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Mercedes W221 Blind Spot Radar Distance Sensor Rear Left Right N/O/S A0025409117

Part no. A0025409117

Mercedes W221 Blind Spot Radar Distance Sensor Rear Left Right N/O/S A0025409117

Product currently unavailable

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Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401830

Part no. A2105401830

Mercedes-Benz E-Class W210 Battery Positive Plus Cable Loom Harness A2105401830

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£BMW E81 E87 E90 LCI 118d 318d N47 Diesel ECU Control Kit DDE 7823422 CAS3 Keys

Part no. 7823422-2

£BMW E81 E87 E90 LCI 118d 318d N47 Diesel ECU Control Kit DDE 7823422 CAS3 Keys

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Xenon Control Unit BMW X5 E70 E90 E91 LCI Adaptive Headlight 7189311

Part no. 7182396-1

Xenon Control Unit BMW X5 E70 E90 E91 LCI Adaptive Headlight 7189311

Product currently unavailable

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Mercedes W203 W210 W220 DIesel Glow Plug Relay Module Unit A0285454032

Part no. A0285454032

Mercedes W203 W210 W220 DIesel Glow Plug Relay Module Unit A0285454032

Product currently unavailable

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VW Volkswagen Polo 6N 1.4 APQ Petrol Starter Motor 085911023JX

Part no. 085911023JX

VW Volkswagen Polo 6N 1.4 APQ Petrol Starter Motor 085911023JX

Product currently unavailable

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Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM3R 6827072

Part no. 6827072-2

Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM3R 6827072

Product currently unavailable

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BMW 7 Series E65 E66 Sensor B-pillar Right Airbag O/S 6970892

Part no. 6970892

BMW 7 Series E65 E66 Sensor B-pillar Right Airbag O/S 6970892

Product currently unavailable

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VW Volkswagen Golf Mk5 V 1K Air Module Control Unit ECU 1K0909605T

Part no. 1K0909605T

VW Volkswagen Golf Mk5 V 1K Air Module Control Unit ECU 1K0909605T

Product currently unavailable

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BMW E60 E61 E83 Petrol M54 Engine ECU Control Unit DME 7541335

Part no. 7541335

BMW E60 E61 E83 Petrol M54 Engine ECU Control Unit DME 7541335

Product currently unavailable

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Mini Cooper One R55 R56 N12 DME 7573701 Petrol Engine Control Unit ECU Manual

Part no. 7573701-2

Mini Cooper One R55 R56 N12 DME 7573701 Petrol Engine Control Unit ECU Manual

Product currently unavailable

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Mercedes W169 W245 Aerial Roof Antenna Radio Control Unit Module A1698203775

Part no. A1698203775

Mercedes W169 W245 Aerial Roof Antenna Radio Control Unit Module A1698203775

Product currently unavailable

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Mercedes W177 Electrical Wiring Harness Starter & 3-Phase Alternator A1775406500

Part no. A1775406500

Mercedes W177 Electrical Wiring Harness Starter & 3-Phase Alternator A1775406500

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BMW F20 F30 F32 120i 320i 420i N20 184HP Engine Unit ECU DME 8631725 Automatic

Part no. 8631725-3

BMW F20 F30 F32 120i 320i 420i N20 184HP Engine Unit ECU DME 8631725 Automatic

Product currently unavailable

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Fiat Doblo 1.6 Diesel Alternator Generator Denso 120A 14V 51854902

Part no. 51854902

Fiat Doblo 1.6 Diesel Alternator Generator Denso 120A 14V 51854902

Product currently unavailable

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Audi A8L 4H Air Suspension Control Unit Module ECU 4H0907553E

Part no. 4H0907553E

Audi A8L 4H Air Suspension Control Unit Module ECU 4H0907553E

Product currently unavailable

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Mercedes W164 C207 Automatic Gearbox ECU Control Unit EGS Module A0002703352

Part no. A0002703352

Mercedes W164 C207 Automatic Gearbox ECU Control Unit EGS Module A0002703352

Product currently unavailable

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Audi Q2 GA NAV Multimedia Navigation Display Screen MMI 8,25" 81A919605B

Part no. 81A919605B

Audi Q2 GA NAV Multimedia Navigation Display Screen MMI 8,25" 81A919605B

Product currently unavailable

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CD Player BMW E60 E61 LCI E63 E64 Radio Stereo CHAMP Business Head Unit 9187903

Part no. 9187903-2

CD Player BMW E60 E61 LCI E63 E64 Radio Stereo CHAMP Business Head Unit 9187903

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Mercedes W169 W245 Sam Control Module Fuse Box Unit A1699010100

Part no. A1699010100

Mercedes W169 W245 Sam Control Module Fuse Box Unit A1699010100

Product currently unavailable

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Mercedes W213 C238 Petrol Alternator Generator A0009060205

Part no. A0009060205

Mercedes W213 C238 Petrol Alternator Generator A0009060205

Product currently unavailable

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Audi A6 C6 Adaptive Suspension Software Module Control Unit ECU 4F0910553D

Part no. 4F0910553D

Audi A6 C6 Adaptive Suspension Software Module Control Unit ECU 4F0910553D

Product currently unavailable

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

Part no. 6822602

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

Product currently unavailable

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Mercedes W213 Air Con Conditioning Module A/C Climate Control Unit A2139000407

Part no. A2139000407

Mercedes W213 Air Con Conditioning Module A/C Climate Control Unit A2139000407

Product currently unavailable

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Mercedes W204 Parking Control Unit Module ECU A2049012604

Part no. A2049012604

Mercedes W204 Parking Control Unit Module ECU A2049012604

Product currently unavailable

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Airbag Module Mini F55 F56 F60 BMW X1 F48 F45 ECU Control Unit Air Bag 6818814

Part no. 6818814

Airbag Module Mini F55 F56 F60 BMW X1 F48 F45 ECU Control Unit Air Bag 6818814

Product currently unavailable

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Radio CD BMW E81 E87 E90 E91 E92 LCI Professional DAB 9243925

Part no. 9343210

Radio CD BMW E81 E87 E90 E91 E92 LCI Professional DAB 9243925

Product currently unavailable

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BMW E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 7811702 Manual

Part no. 7811702

BMW E81 E82 E87 LCI E88 N47S 123d ECU Kit DDE CAS 3 Key 7811702 Manual

Product currently unavailable

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Mini Cooper R56 ECU Footwell Light Module Unit AHL EKS PL3 FRM3R Lear 3456393

Part no. 3456393

Mini Cooper R56 ECU Footwell Light Module Unit AHL EKS PL3 FRM3R Lear 3456393

Product currently unavailable

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Starter Motor Ford Transit Connect 1.8 TDCI Diesel Engine Actuator 2T1411000CC

Part no. 2T1411000CC

Starter Motor Ford Transit Connect 1.8 TDCI Diesel Engine Actuator 2T1411000CC

Product currently unavailable

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BMW X5 Series E53 Electrical Power Distribution Fuse Box 8384527

Part no. 8384527

BMW X5 Series E53 Electrical Power Distribution Fuse Box 8384527

Product currently unavailable

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Citroen Dispatch Alternator Generator Valeo 90A 12V 9655296080

Part no. 9655296080

Citroen Dispatch Alternator Generator Valeo 90A 12V 9655296080

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Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718207226

Part no. A1718207226

Mercedes SLK R171 Door Module Front Right Control Unit ECU A1718207226

Product currently unavailable

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BMW 1 3 Series E81 E87 E91 Switch Cluster Cruise Control Stalk Unit 9123038

Part no. 9123038

BMW 1 3 Series E81 E87 E91 Switch Cluster Cruise Control Stalk Unit 9123038

Product currently unavailable

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Mercedes R171 Central Gateway Module ECU Control Unit A1715404945

Part no. A1715404945

Mercedes R171 Central Gateway Module ECU Control Unit A1715404945

Product currently unavailable

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Door Module Mercedes W213 C238 Front Left N/S Control Unit ECU A2139002022

Part no. A2139002022

Door Module Mercedes W213 C238 Front Left N/S Control Unit ECU A2139002022

Product currently unavailable

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Audi A3 8P Body Control Comfort Unit Module BCM Unit ECU 8P0907063N

Part no. 8P0907063N

Audi A3 8P Body Control Comfort Unit Module BCM Unit ECU 8P0907063N

Product currently unavailable

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Mercedes Vito W639 OM646.980 Engine ECU Control Unit Module A6461501077 Manual

Part no. A6461501077

Mercedes Vito W639 OM646.980 Engine ECU Control Unit Module A6461501077 Manual

Product currently unavailable

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BMW E53 E60 E61 E65 E66 E83 Power Steering Speed Sensor 6777435

Part no. 6777435

BMW E53 E60 E61 E65 E66 E83 Power Steering Speed Sensor 6777435

Product currently unavailable

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BMW F30 Display Central Information Screen 8,8" Navigation Professional 9252004

Part no. 9252004

BMW F30 Display Central Information Screen 8,8" Navigation Professional 9252004

Product currently unavailable

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Display Screen Mercedes W204 W212 Information Navigation Dashboard A2129004307

Part no. A2129004307

Display Screen Mercedes W204 W212 Information Navigation Dashboard A2129004307

Product currently unavailable

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BMW X2 F39 F45 F46 Automatic Gearbox ECU Control Module EGS Unit 5A20558

Part no. 5A20558

BMW X2 F39 F45 F46 Automatic Gearbox ECU Control Module EGS Unit 5A20558

Product currently unavailable

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Fuse Box Mercedes W169 W245 Sam Control Module Unit ECU A1699010100

Part no. A1699010100-1

Fuse Box Mercedes W169 W245 Sam Control Module Unit ECU A1699010100

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BMW 5 X5 Series E61 E61 LCI E70 Telematics Bluetooth Control Unit Module 9171347

Part no. 9171347

BMW 5 X5 Series E61 E61 LCI E70 Telematics Bluetooth Control Unit Module 9171347

Product currently unavailable

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Audi A6 C6 2.0 TDI Alternator Generator 180A 14V Diesel Engine Unit 03G903016N

Part no. 03G903016N

Audi A6 C6 2.0 TDI Alternator Generator 180A 14V Diesel Engine Unit 03G903016N

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Engine Wiring Mercedes W204 OM651 Diesel Harness Loom DDE A6511503233

Part no. A6511503233

Engine Wiring Mercedes W204 OM651 Diesel Harness Loom DDE A6511503233

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BMW F45 X1 F48 i3 I01 Airbag Module  Control Unit ECU Air Bag 9495910

Part no. 9495910

BMW F45 X1 F48 i3 I01 Airbag Module Control Unit ECU Air Bag 9495910

Product currently unavailable

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BMW X3 Series E83 LCI Diesel Battery Positive Lead Red Cable Plus Pole 3452235

Part no. 3452235

BMW X3 Series E83 LCI Diesel Battery Positive Lead Red Cable Plus Pole 3452235

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Mercedes W203 W211 Diesel Engine Starter Motor A0051511301

Part no. A0051511301

Mercedes W203 W211 Diesel Engine Starter Motor A0051511301

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BMW E87 E90 CAS2 ECU Control Unit Module 61356943791 6943791

Part no. 6943791

BMW E87 E90 CAS2 ECU Control Unit Module 61356943791 6943791

Product currently unavailable

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BMW 5 Series E60 LCI Light Module Control Unit ECU Lear LM II E6X LWR 9192641

Part no. 9192641

BMW 5 Series E60 LCI Light Module Control Unit ECU Lear LM II E6X LWR 9192641

Product currently unavailable

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Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502

-15%

Part no. A9069003502

Mercedes W906 Fuse Box Relay Control Unit Electric Module SAM A9069003502

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Mercedes W176 180 CDI OM607.951 Blue Efficiency ECU Kit A6079002300 Key Lock

Part no. A6079002300-2

Mercedes W176 180 CDI OM607.951 Blue Efficiency ECU Kit A6079002300 Key Lock

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Mini Cooper S R56 LCI N18 184HP ECU Kit Control Unit DME 7613226 CAS Key Manual

Part no. 7613226-1

Mini Cooper S R56 LCI N18 184HP ECU Kit Control Unit DME 7613226 CAS Key Manual

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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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Mercedes W903 Diesel Engine Alternator Generator 45-90A 14V A0101540802

Part no. A0101540802

Mercedes W903 Diesel Engine Alternator Generator 45-90A 14V A0101540802

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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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