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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Volkswagen VW Caddy 2K Injector Wiring Harness Loom 038971803

Part no. 038971803

Volkswagen VW Caddy 2K Injector Wiring Harness Loom 038971803

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BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8510591 CAS3 + Key Automatic

Part no. 8510591-3

BMW E81 E87 E90 LCI 120d 320d N47 ECU Kit DDE 8510591 CAS3 + Key Automatic

Product currently unavailable

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Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

Part no. 5Q0959592D

Door Module Audi A3 8V VW Golf 7 Seat Leon 3 Front Right O/S 5Q0959592D

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Alternator Generator Mercedes W211 S211 OM646 Diesel Engine 200A A0131545902

Part no. A0131545902

Alternator Generator Mercedes W211 S211 OM646 Diesel Engine 200A A0131545902

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Mini F54 F55 F56 F57 F60 Petrol Engine Starter Motor 7649090

Part no. 7649090-1

Mini F54 F55 F56 F57 F60 Petrol Engine Starter Motor 7649090

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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

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Mini Cooper One R56 SPEG PL3 M2 Fuse Distribution Box 3453293

Part no. 3453293

Mini Cooper One R56 SPEG PL3 M2 Fuse Distribution Box 3453293

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VW Volkswagen Golf 6 Polo Radio Head Unit RNS 310 Media Player Unit 3C0035270

Part no. 3C0035270

VW Volkswagen Golf 6 Polo Radio Head Unit RNS 310 Media Player Unit 3C0035270

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Mercedes W204 C180 Kompressor 271.952 156HP Engine Control Unit ECU A2711504879

Part no. A2711504879

Mercedes W204 C180 Kompressor 271.952 156HP Engine Control Unit ECU A2711504879

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BMW F20 F21 F30 F31 118d 318d 143HP N47N Engine Unit ECU DDE 8576341 Automatic

Part no. 8576341-8

BMW F20 F21 F30 F31 118d 318d 143HP N47N Engine Unit ECU DDE 8576341 Automatic

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BMW F32 GPS Navigation Display Screen Android Auto CarPlay 10,25"

Part no. 1025-03-1

BMW F32 GPS Navigation Display Screen Android Auto CarPlay 10,25"

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Mini Cooper R56 LCI Footwell Light Module High EKS ECU PL3 FRM3R Lear 3457031

Part no. 3457031

Mini Cooper R56 LCI Footwell Light Module High EKS ECU PL3 FRM3R Lear 3457031

Product currently unavailable

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Volkswagen Tiguan 5N Sat Navi Stereo Radio Audio Head Unit CD Player 2K0035279C

Part no. 2K0035279C

Volkswagen Tiguan 5N Sat Navi Stereo Radio Audio Head Unit CD Player 2K0035279C

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Audi A3 8P Alternator Main Cable Wiring Harness Loom 1K0971349FL

Part no. 1K0971349FL

Audi A3 8P Alternator Main Cable Wiring Harness Loom 1K0971349FL

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Audi A3 8V Door Module Control Unit Front Driver Side 5Q0959593B

Part no. 5Q0959593B

Audi A3 8V Door Module Control Unit Front Driver Side 5Q0959593B

Product currently unavailable

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Audi A5 8T Headlight Range Headlamp Control Unit Module ECU 8K0907357A

Part no. 8K0907357A

Audi A5 8T Headlight Range Headlamp Control Unit Module ECU 8K0907357A

Product currently unavailable

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Volvo V70 2.4 D5244T4 Diesel Engine Control Module ECU 30729826A Automatic

Part no. 30729826A

Volvo V70 2.4 D5244T4 Diesel Engine Control Module ECU 30729826A Automatic

Product currently unavailable

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Audi A5 8T Head Unit Multimedia Screen Display CarPlay Infotainment Unit

Part no. CARPLAY-A5-8T

Audi A5 8T Head Unit Multimedia Screen Display CarPlay Infotainment Unit

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BMW F20 F21 F30 LCI F22 F32 G30 X3 F25 Starter Acoustic Vibration Plug 8571349

Part no. 8571349

BMW F20 F21 F30 LCI F22 F32 G30 X3 F25 Starter Acoustic Vibration Plug 8571349

Product currently unavailable

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Mini Cooper D R55 R56 LCI R60 N47N 112HP Engine ECU Kit DDE 8519663 CAS 3 Key

Part no. 8519663-3

Mini Cooper D R55 R56 LCI R60 N47N 112HP Engine ECU Kit DDE 8519663 CAS 3 Key

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Mercedes-Benz A-Class W168 Sensor Mat Seat Occupation Recognition A1688207310

Part no. A1688207310

Mercedes-Benz A-Class W168 Sensor Mat Seat Occupation Recognition A1688207310

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

Part no. 9266385

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

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Mercedes W221 Head Unit DVD High Line Radio Player Navigation A2218708093

Part no. A2218708093

Mercedes W221 Head Unit DVD High Line Radio Player Navigation A2218708093

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Ford B-Max Mk1 Air Module ECU Module Control Unit AV1T-14B321-CE

Part no. AV1T-14B321-CE

Ford B-Max Mk1 Air Module ECU Module Control Unit AV1T-14B321-CE

Product currently unavailable

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Mercedes C140 Seat Belt Module Control Unit ECU A1408202526

Part no. A1408202526

Mercedes C140 Seat Belt Module Control Unit ECU A1408202526

Product currently unavailable

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BMW X3 Z4 E83 E85 CID Control Unit CD Player Radio Audio System 9197131

Part no. 9197131

BMW X3 Z4 E83 E85 CID Control Unit CD Player Radio Audio System 9197131

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Mercedes C207 E220 CDI OM651.911 BE Engine Unit Module ECU A6519007500 Automatic

Part no. A6519007500-17

Mercedes C207 E220 CDI OM651.911 BE Engine Unit Module ECU A6519007500 Automatic

Product currently unavailable

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Peugeot 207 Display Screen Dashboard Multifunction Monitor Unit 966448398000

Part no. 9.66448E+11

Peugeot 207 Display Screen Dashboard Multifunction Monitor Unit 966448398000

Product currently unavailable

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BMW E46 E60 LCI E83 E87 M47N2 Diesel Starter Motor 7787356

Part no. 7787356-1

BMW E46 E60 LCI E83 E87 M47N2 Diesel Starter Motor 7787356

Product currently unavailable

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BMW X3 E83 Light ECU Control Module Unit Lear LM MAN.LWR 3420786

Part no. 3420786

BMW X3 E83 Light ECU Control Module Unit Lear LM MAN.LWR 3420786

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Mercedes E-Class W211 Passenger Side Acquistition Actuation Signal Control Unit

Part no. A2115452132

Mercedes E-Class W211 Passenger Side Acquistition Actuation Signal Control Unit

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Autoradio CD Player BMW E81 E82 E87 E88 E90 E91 E92 Radio Professional 9187108

Part no. 9187108-2

Autoradio CD Player BMW E81 E82 E87 E88 E90 E91 E92 Radio Professional 9187108

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Land Rover Discovery 3 L319 Sat Nav Radio Display Screen Unit 9H22-10E889-AA

Part no. 9H22-10E889-AA

Land Rover Discovery 3 L319 Sat Nav Radio Display Screen Unit 9H22-10E889-AA

Product currently unavailable

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BMW F07 GT F10 F11 Hands Free Telephone Microphone Black 9181411

Part no. 9181411

BMW F07 GT F10 F11 Hands Free Telephone Microphone Black 9181411

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Display Screen BMW E60 E61 E90 LCI  8.8" Monitor Sat Nav 9193745

Part no. 9193745-2

Display Screen BMW E60 E61 E90 LCI 8.8" Monitor Sat Nav 9193745

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BMW F10 M5 F06 F12 F13 M6 S63N Engine Alternator Generator 14V 210A 7606628

Part no. 7606628

BMW F10 M5 F06 F12 F13 M6 S63N Engine Alternator Generator 14V 210A 7606628

Product currently unavailable

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BMW 1 3 E87 E90 N45 116i 316i Petrol ECU Kit DME 7557809 + CAS 2 + Key Manual

Part no. 7557809-3

BMW 1 3 E87 E90 N45 116i 316i Petrol ECU Kit DME 7557809 + CAS 2 + Key Manual

Product currently unavailable

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Radio Head Unit Ford Transit Connect 6000 CD Media Player Unit 6C1T18C815AH

Part no. 6C1T18C815AH

Radio Head Unit Ford Transit Connect 6000 CD Media Player Unit 6C1T18C815AH

Product currently unavailable

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BMW E87 E90 E91 118i 318i N46 129HP ECU KIT DME CAS2 Key 7561834 Manual Gearbox

Part no. 7561834-11

BMW E87 E90 E91 118i 318i N46 129HP ECU KIT DME CAS2 Key 7561834 Manual Gearbox

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Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701

Part no. A1715451701

Mercedes SLK R171 Fuse Box SAM Relay Control Unit Module A1715451701

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Navigation Processor Mercedes W176 W212 Control Unit Module NTG 4.5 A1728100011

Part no. A1728100011-1

Navigation Processor Mercedes W176 W212 Control Unit Module NTG 4.5 A1728100011

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Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469006710

Part no. A2469006710

Radio CD Player Mercedes W176 W246 COMAND Nav Sat Head Unit A2469006710

Product currently unavailable

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Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433

Part no. A2059004433

Mercedes W205 Head Unit Radio CD Player Audio Sat Nav Multimedia A2059004433

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BMW X3 X5 E83 E53 Telematics Control Unit Module GSM 9132712

Part no. 9132712

BMW X3 X5 E83 E53 Telematics Control Unit Module GSM 9132712

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BMW X5 E70 Footwell Light Module Control Unit ECU FRM II AHL Lear 9153804

Part no. 9153804

BMW X5 E70 Footwell Light Module Control Unit ECU FRM II AHL Lear 9153804

Product currently unavailable

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Earth Ground Cable Renault Master Vivaro Line Strap Battery Lead 240804802R

Part no. 240804802R

Earth Ground Cable Renault Master Vivaro Line Strap Battery Lead 240804802R

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BMW E81 E82 E87 LCI E90 Radio Business CD Player Unit 9210510

Part no. 9210510-1

BMW E81 E82 E87 LCI E90 Radio Business CD Player Unit 9210510

Product currently unavailable

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Audi A4 B8 Headlight Range Module Control Unit ECU 8K0907357B

Part no. 8K0907357B

Audi A4 B8 Headlight Range Module Control Unit ECU 8K0907357B

Product currently unavailable

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High Voltage Inverter BMW i3 I01 Hybrid 120Ah Rex Electrical Machine 8488548

Part no. 8488548

High Voltage Inverter BMW i3 I01 Hybrid 120Ah Rex Electrical Machine 8488548

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BMW E90 E92 335i Petrol N54 ECU Kit Control Unit DME 7568842 CAS3 Key Automatic

Part no. 7568842-3

BMW E90 E92 335i Petrol N54 ECU Kit Control Unit DME 7568842 CAS3 Key Automatic

Product currently unavailable

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Mercedes W204 Dashboard Navigation Central Display Screen Monitor A2048204697

Part no. A2048204697-1

Mercedes W204 Dashboard Navigation Central Display Screen Monitor A2048204697

Product currently unavailable

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Volkswagen Audi Skoda Audi 1.6 TDI Diesel Engine Starter Motor 0AM911023M

Part no. 0AM911023M

Volkswagen Audi Skoda Audi 1.6 TDI Diesel Engine Starter Motor 0AM911023M

Product currently unavailable

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Information Display BMW E81 E82 E87 E88 Board Monitor Central Screen 9145437

Part no. 9145437-2

Information Display BMW E81 E82 E87 E88 Board Monitor Central Screen 9145437

Product currently unavailable

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Ford Transit MK6 2.4 TDDI Diesel Engine Control Unit ECU 2C1A12A650EA Manual

Part no. 2C1A12A650EA

Ford Transit MK6 2.4 TDDI Diesel Engine Control Unit ECU 2C1A12A650EA Manual

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Porsche Cayenne 9PA Body Gateway Module ECU Control Unit 7L5907530D

Part no. 7L5907530D

Porsche Cayenne 9PA Body Gateway Module ECU Control Unit 7L5907530D

Product currently unavailable

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Ford Transit Custom Mk8 Dashboard Display Screen Touchscreen K1BT-18B955-FD

Part no. K1BT-18B955-FD-1

Ford Transit Custom Mk8 Dashboard Display Screen Touchscreen K1BT-18B955-FD

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BMW X5 Series E70 Individual Audio System Amplifier Top-hifi Lear PL5 9204842

Part no. 9204842

BMW X5 Series E70 Individual Audio System Amplifier Top-hifi Lear PL5 9204842

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VW Volkswagen Polo 6R Rear Door Wiring Left Right N/O/S Harness Cable 6R4971693C

Part no. 6R4971693C

VW Volkswagen Polo 6R Rear Door Wiring Left Right N/O/S Harness Cable 6R4971693C

Product currently unavailable

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BMW E87 E90 N46 118i 318i 129HP ECU Engine Module KIT DME 7561834 CAS2 Key

Part no. 7561834-12

BMW E87 E90 N46 118i 318i 129HP ECU Engine Module KIT DME 7561834 CAS2 Key

Product currently unavailable

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Seat Ibiza 6J Engine Wiring Harness Loom Manual Gearbox 1.2 TSI CJZC 04E971612ES

Part no. 04E971612ES

Seat Ibiza 6J Engine Wiring Harness Loom Manual Gearbox 1.2 TSI CJZC 04E971612ES

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Control Unit BMW F20 F21 F22 F30 F31 F32 F36 Module FEM ECU LR01 9387265

Part no. 9387265

Control Unit BMW F20 F21 F22 F30 F31 F32 F36 Module FEM ECU LR01 9387265

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BMW F98 Engine Starter Motor 8671505

Part no. 8671505

BMW F98 Engine Starter Motor 8671505

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

Part no. 6906621-2

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

Product currently unavailable

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BMW E63 E64 LCI Driver's Seat Occupancy Sensor Mat Control Unit Module 9126457

Part no. 9126457

BMW E63 E64 LCI Driver's Seat Occupancy Sensor Mat Control Unit Module 9126457

Product currently unavailable

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Audi A8 D4 Diesel Engine Fuel Pump Control Unit Module 12V 4H0906093G

Part no. 4H0906093G

Audi A8 D4 Diesel Engine Fuel Pump Control Unit Module 12V 4H0906093G

Product currently unavailable

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Mercedes W221 Door Module Front Right O/S Control Unit ECU A2219006404

Part no. A2219006404-1

Mercedes W221 Door Module Front Right O/S Control Unit ECU A2219006404

Product currently unavailable

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Mercedes-Benz B-Class W245 180CDI Engine Wiring Harness Loom Cable A6401504033

Part no. A6401504033

Mercedes-Benz B-Class W245 180CDI Engine Wiring Harness Loom Cable A6401504033

Product currently unavailable

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BMW 3 Series E90 E91 LCI 320d N47N 184HP ECU Kit DDE 8506566 CAS3 + Key Manual

Part no. 8506566-1

BMW 3 Series E90 E91 LCI 320d N47N 184HP ECU Kit DDE 8506566 CAS3 + Key Manual

Product currently unavailable

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Audi A3 8P Gateway Control Unit Module ECU 8P0907530B

Part no. 8P0907530B

Audi A3 8P Gateway Control Unit Module ECU 8P0907530B

Product currently unavailable

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BMW E81 E87 E91 Switch Cluster Steering Column Cruise Control 9110878

Part no. 9110878

BMW E81 E87 E91 Switch Cluster Steering Column Cruise Control 9110878

Product currently unavailable

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BMW E90 LCI 330d N57 245HP ECU Engine Control Unit DME Automatic Gearbox

Part no. 8507136

BMW E90 LCI 330d N57 245HP ECU Engine Control Unit DME Automatic Gearbox

Product currently unavailable

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BMW 1 3 4 F20 F21 F30 F31 F32 N47N Diesel Alternator 180A 7823343 7823344

Part no. 7823344-1

BMW 1 3 4 F20 F21 F30 F31 F32 N47N Diesel Alternator 180A 7823343 7823344

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Mini Cooper R55 R56 R57 CCC CD Navigation Sat Nav Head Unit 9170730

Part no. 9170730-1

Mini Cooper R55 R56 R57 CCC CD Navigation Sat Nav Head Unit 9170730

Product currently unavailable

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Dashboard Monitor BMW F30 F31 Display Central Information Screen 6,5" 9270393

Part no. 9270393-1

Dashboard Monitor BMW F30 F31 Display Central Information Screen 6,5" 9270393

Product currently unavailable

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Mercedes W166 W205 W212 Rear Bumper Blind Spot Radar Sensor Module A0009058802

Part no. A0009058802

Mercedes W166 W205 W212 Rear Bumper Blind Spot Radar Sensor Module A0009058802

Product currently unavailable

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BMW X3 E83 LCi AMPLIFIER HIFI SYSTEM LEAR PL2 6990098 65126990098

Part no. 6990098

BMW X3 E83 LCi AMPLIFIER HIFI SYSTEM LEAR PL2 6990098 65126990098

Product currently unavailable

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Audi TT 8J Audio Amplifier Radio Lear Sound Unit 8J0035223B

Part no. 8J0035223B

Audi TT 8J Audio Amplifier Radio Lear Sound Unit 8J0035223B

Product currently unavailable

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BMW F20 F21 F30 F31 LCI G30 G31 G11 Navigation Head Unit Sat Nav High 2 8708259

Part no. 8708259

BMW F20 F21 F30 F31 LCI G30 G31 G11 Navigation Head Unit Sat Nav High 2 8708259

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Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

Part no. 8V0857273P-1

Audi A3 8V Multimedia Display Screen Radio Sat Nav Head Unit 8V0857273P

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Radio CD Player Mercedes W176 W246 Audio Navigation Stereo Head Unit A2469008214

Part no. A2469008214

Radio CD Player Mercedes W176 W246 Audio Navigation Stereo Head Unit A2469008214

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Audi A5 8T Towbar Trailer Hitch Control Module Unit ECU HELLA 8K0907383B

Part no. 8K0907383E

Audi A5 8T Towbar Trailer Hitch Control Module Unit ECU HELLA 8K0907383B

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BMW E36 E38 E85 Mini R52 R57 5x Change-Over Contact Relay Violet Set 1388911

Part no. 1388911-3

BMW E36 E38 E85 Mini R52 R57 5x Change-Over Contact Relay Violet Set 1388911

Product currently unavailable

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Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual

Part no. A6519003403-4

Mercedes Sprinter W906 OM651.955 163HP Engine Unit Module ECU A6519003403 Manual

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Volkswagen Golf Mk5 1K Module BCM Body Control Unit Module ECU 3C0937049AE

Part no. 3C0937049AE

Volkswagen Golf Mk5 1K Module BCM Body Control Unit Module ECU 3C0937049AE

Product currently unavailable

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BMW E81 E87 E91 Switch Cluster Steering Column Wiper Stalk 6962678

Part no. 6962678

BMW E81 E87 E91 Switch Cluster Steering Column Wiper Stalk 6962678

Product currently unavailable

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Peugeot 307 1.6 HDI Diesel Engine Wiring Cable Loom Harness 9658277780

Part no. 9658277780

Peugeot 307 1.6 HDI Diesel Engine Wiring Cable Loom Harness 9658277780

Product currently unavailable

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

Part no. 8T2035186P-1

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

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Audi Q3 8U Headlight Module LED Headlamp Control Unit 8U0998572A

Part no. 8U0998572A

Audi Q3 8U Headlight Module LED Headlamp Control Unit 8U0998572A

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Audi A4 B7 1.8 T BFB Petrol Engine Alternator Generator 06D903016AB

Part no. 06D903016AB

Audi A4 B7 1.8 T BFB Petrol Engine Alternator Generator 06D903016AB

Product currently unavailable

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BMW E90 Light Control Module ECU LCM NSW Footwell PL2FRMFA 9166711

Part no. 9166711

BMW E90 Light Control Module ECU LCM NSW Footwell PL2FRMFA 9166711

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BMW F10 Footwell Light Control Module ECU Unit FRM3 TEMIC 9250455

Part no. 9250455

BMW F10 Footwell Light Control Module ECU Unit FRM3 TEMIC 9250455

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Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

Part no. A2045403850

Mercedes W204 SAM Fuse Prefuse Box Relay Control Unit A2045403850

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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Speaker Amplifier Audi A4 B8 A5 8T Stereo Radio Sound System Amp 8R0035223G

Part no. 8R0035223G

Speaker Amplifier Audi A4 B8 A5 8T Stereo Radio Sound System Amp 8R0035223G

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BDC Module BMW X5 F15 Body Domain Controller BDC Unit 9355750

Part no. 9355750

BDC Module BMW X5 F15 Body Domain Controller BDC Unit 9355750

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Mini Cooper S R56 LCI R60 N18 1.6 184HP Engine Unit ECU Kit DME 7620985 Manual

Part no. 7620985-6

Mini Cooper S R56 LCI R60 N18 1.6 184HP Engine Unit ECU Kit DME 7620985 Manual

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BMW X3 E83 LCI 1.8sd 2.0sd N47 177HP Engine Control Unit ECU DDE 7809999 Manual

Part no. 7809999-3

BMW X3 E83 LCI 1.8sd 2.0sd N47 177HP Engine Control Unit ECU DDE 7809999 Manual

Product currently unavailable

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Mercedes-Benz W203 W210 Sprinter W906 Glow Plug Relay A6461536579

Part no. A6461536579

Mercedes-Benz W203 W210 Sprinter W906 Glow Plug Relay A6461536579

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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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