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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Ford Transit TT9 Control Unit Relay Central Door Lock Module ECU F3LB-14B118-AA

Part no. F3LB14B118AA

Ford Transit TT9 Control Unit Relay Central Door Lock Module ECU F3LB-14B118-AA

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Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204126

Part no. A1718204126

Mercedes SLK R171 Front Air Module SRS Control Unit ECU A1718204126

Product currently unavailable

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Engine Alternator BMW E60 E61 E65 E66 Diesel Alternator Generator 170A 7789981

Part no. 7789981-1

Engine Alternator BMW E60 E61 E65 E66 Diesel Alternator Generator 170A 7789981

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Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400050

Part no. A6395400050

Mercedes Vito W639 Battery Terminal Fuse Box Control Unit Module A6395400050

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Radio Head Mercedes Vito W639 Sprinter W906 CD Audio Stereo Unit A9068200886

Part no. A9068200886

Radio Head Mercedes Vito W639 Sprinter W906 CD Audio Stereo Unit A9068200886

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BMW F10 F11 LCI Xenon Adaptive Headlight Ballast Control Module Unit 7355073

Part no. 7355073

BMW F10 F11 LCI Xenon Adaptive Headlight Ballast Control Module Unit 7355073

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Ford Transit Mk7 Radio CD Player Head Unit Autoradio 6000 CD 8C1T-18C815-AA

Part no. 8C1T18C815AA

Ford Transit Mk7 Radio CD Player Head Unit Autoradio 6000 CD 8C1T-18C815-AA

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Head Unit Mercedes W212 Radio Navi CD Player For Parts Not Working A2129005212

Part no. A2129005212-1

Head Unit Mercedes W212 Radio Navi CD Player For Parts Not Working A2129005212

Product currently unavailable

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BMW X3 X5 Z4 E39 E46 E53 E83 E85 GPS Navigation Computer DVD 6920182

Part no. 6920182

BMW X3 X5 Z4 E39 E46 E53 E83 E85 GPS Navigation Computer DVD 6920182

Product currently unavailable

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Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6827161

Part no. 6827161

Mini Cooper F55 F56 Control Unit Module Active Sound Design Amplifier 6827161

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Audi TT 8N Radio Stereo Player Head Unit Chorus 4B0057186PX

Part no. 4B0057186PX-1

Audi TT 8N Radio Stereo Player Head Unit Chorus 4B0057186PX

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Mercedes Sprinter W907 Fuse Box Battery Relay Gruner A0009824823

Part no. A0009824823

Mercedes Sprinter W907 Fuse Box Battery Relay Gruner A0009824823

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BMW E90 E90N E91 E91N E92 E92N E93 LCI NOX Wiring Loom Cable 7541009

Part no. 7541009

BMW E90 E90N E91 E91N E92 E92N E93 LCI NOX Wiring Loom Cable 7541009

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BMW 1 Series E82 ECU Body Control Module Junction Box L1 PL2RR JBBFE 9267200

Part no. 9267200

BMW 1 Series E82 ECU Body Control Module Junction Box L1 PL2RR JBBFE 9267200

Product currently unavailable

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Mercedes W205 Display Screen Multimedia Navigation Sat Head Unit A2059000441

Part no. A2059000441

Mercedes W205 Display Screen Multimedia Navigation Sat Head Unit A2059000441

Product currently unavailable

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Seat Control Module Mercedes A172 A190 A197 A207 A231 ECU Unit A1729000402

Part no. A1729000402

Seat Control Module Mercedes A172 A190 A197 A207 A231 ECU Unit A1729000402

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BMW 5 X3 Series E60 E61 E83 PDC Parking Ultrasonic Sensor Bluewater 6989245

Part no. 6989245-WB

BMW 5 X3 Series E60 E61 E83 PDC Parking Ultrasonic Sensor Bluewater 6989245

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Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

Part no. 3C0907521

Heater Resistor Volkswagen VW Touran 1T Blower Motor Fan Resistor 3C0907521

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Mercedes Sprinter W906 Door Module Front Right O/S Control Module A9069006100

Part no. A9069006100

Mercedes Sprinter W906 Door Module Front Right O/S Control Module A9069006100

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Mercedes ML W164 Rear Control Unit Module Fuse Box SAM A1645401801

Part no. A1645401801

Mercedes ML W164 Rear Control Unit Module Fuse Box SAM A1645401801

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BMW E60 E65 E70 E87 E90 F10 F20 F30 N52 N53 Petrol Engine Starter Motor 7521122

Part no. 7521122-1

BMW E60 E65 E70 E87 E90 F10 F20 F30 N52 N53 Petrol Engine Starter Motor 7521122

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Camera Speed Control BMW i3 I01 F10 F20 F30 LCI KaFAS ECU Module Unit 9462613

Part no. 9462613

Camera Speed Control BMW i3 I01 F10 F20 F30 LCI KaFAS ECU Module Unit 9462613

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Mercedes W202 W210 Automatic Gearbox EGS Control Unit Module ECU A0275450132

Part no. A0275450132

Mercedes W202 W210 Automatic Gearbox EGS Control Unit Module ECU A0275450132

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Steering Lock Mercedes W176 W246 Control Unit Module VST A0999004101

Part no. A0999004101

Steering Lock Mercedes W176 W246 Control Unit Module VST A0999004101

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Third Stoplamp Cover BMW F30 F80 M3 Rear Stop Lamp Brake Trim 7259877

Part no. 7259877

Third Stoplamp Cover BMW F30 F80 M3 Rear Stop Lamp Brake Trim 7259877

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MINI Cooper One R50 Control Unit For Radio Remote Control 433MHZ 4109140

Part no. 4109140

MINI Cooper One R50 Control Unit For Radio Remote Control 433MHZ 4109140

Product currently unavailable

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BMW F01 F02 LCI F07 GT Control Unit Module Voltage Transformer VSU400 9247159

Part no. 9247159

BMW F01 F02 LCI F07 GT Control Unit Module Voltage Transformer VSU400 9247159

Product currently unavailable

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Acceleration Sensor Mercedes S124 R129 Front Seat Belt Locking Retractor Module

Part no. A0008206926

Acceleration Sensor Mercedes S124 R129 Front Seat Belt Locking Retractor Module

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Audi Q7 4M Alternator Mass Cable Wiring Harness Loom 4M0971228CH

Part no. 4M0971228CH

Audi Q7 4M Alternator Mass Cable Wiring Harness Loom 4M0971228CH

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Mercedes-Benz C CLK W202 W208 Left N/S Parking System Warning Display Screen

Part no. A0005429523

Mercedes-Benz C CLK W202 W208 Left N/S Parking System Warning Display Screen

Product currently unavailable

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Audi Q7 4L Air Module ECU Sensor Control Unit 4L0910655D

Part no. 4L0910655D

Audi Q7 4L Air Module ECU Sensor Control Unit 4L0910655D

Product currently unavailable

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BMW X3 E83 Telematics Bluetooth Control Unit Module 9181881

Part no. 9181881

BMW X3 E83 Telematics Bluetooth Control Unit Module 9181881

Product currently unavailable

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BMW E87 E90 E91 N46 120i 320i Engine DME 7561834 ECU KIT CAS2 + 2 Keys Manual

Part no. 7561834-9

BMW E87 E90 E91 N46 120i 320i Engine DME 7561834 ECU KIT CAS2 + 2 Keys Manual

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Engine Wiring BMW F46 Mini F56 B47 Loom Harness Injection Valve Ignition 8516253

Part no. 8516253

Engine Wiring BMW F46 Mini F56 B47 Loom Harness Injection Valve Ignition 8516253

Product currently unavailable

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Mercedes GLC X253 220d 170HP 651.921 Engine Unit ECU A6519006401 Automatic

Part no. A6519006401

Mercedes GLC X253 220d 170HP 651.921 Engine Unit ECU A6519006401 Automatic

Product currently unavailable

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Door Cable Mercedes W212 Wiring Loom Front Left N/S Passenger Side A2124401651

Part no. A2124401651

Door Cable Mercedes W212 Wiring Loom Front Left N/S Passenger Side A2124401651

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Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793M

Part no. 8K0959793M

Audi Q5 8R Front Door Module Control Unit ECU Driver's Side 8K0959793M

Product currently unavailable

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Ford Transit Connect 1.6 TDCI Engine Control ECU Module Manual DV6112A650CEC

Part no. DV6112A650CEC

Ford Transit Connect 1.6 TDCI Engine Control ECU Module Manual DV6112A650CEC

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BMW E38 Basic Body Control Unit Module General Junction Box ECU GM III 8378633

Part no. 8378633

BMW E38 Basic Body Control Unit Module General Junction Box ECU GM III 8378633

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Mercedes GLE C292 Coupe Air Control Module Unit Bosch SRS A1669000220

Part no. A1669000220

Mercedes GLE C292 Coupe Air Control Module Unit Bosch SRS A1669000220

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Hyundai H-1 2.5 CRDI Alternator Generator 373004A310

Part no. 373004A310

Hyundai H-1 2.5 CRDI Alternator Generator 373004A310

Product currently unavailable

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Starter Mercedes W204 C238 W213 W447 Diesel OM654 Starter Motor A6549061500

Part no. A6549061500

Starter Mercedes W204 C238 W213 W447 Diesel OM654 Starter Motor A6549061500

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BMW F30 F31 F32 N20 Engine Gearbox Module Wiring Cable Loom Harness 7634059

Part no. 7634059

BMW F30 F31 F32 N20 Engine Gearbox Module Wiring Cable Loom Harness 7634059

Product currently unavailable

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Ford Galaxy Mk3 Door Module Front Left N/S Control Unit ECU 6G9T-14B533-GL

Part no. 6G9T-14B533-GL

Ford Galaxy Mk3 Door Module Front Left N/S Control Unit ECU 6G9T-14B533-GL

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Battery Cable BMW X3 F25 X4 F26 Positive Plus Pole Lead 9321005

Part no. 9321005

Battery Cable BMW X3 F25 X4 F26 Positive Plus Pole Lead 9321005

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Alternator Mini Cooper R55 R56 R57 R57 R58 Generator Petrol 7575650

Part no. 7575650-1

Alternator Mini Cooper R55 R56 R57 R57 R58 Generator Petrol 7575650

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Audi A4 B7 Front Bumper Wiring Loom Harness Cable 8E0971095R

Part no. 8E0971095R

Audi A4 B7 Front Bumper Wiring Loom Harness Cable 8E0971095R

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Front Seat Module BMW E60 E61 E65 E66 Control Unit ECU 6924879

Part no. 6924879

Front Seat Module BMW E60 E61 E65 E66 Control Unit ECU 6924879

Product currently unavailable

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BMW 3 X5 Series E46 E53 3.0d Diesel M57 Alternator Generator 150A 2248296

Part no. 2248296

BMW 3 X5 Series E46 E53 3.0d Diesel M57 Alternator Generator 150A 2248296

Product currently unavailable

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Mercedes W166 C292 Fuse Relay Box Cover Trim Panel Lid Housing A1665400224

Part no. A1665400224

Mercedes W166 C292 Fuse Relay Box Cover Trim Panel Lid Housing A1665400224

Product currently unavailable

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CD Radio Mercedes W639 W906 Audio Stereo Head Unit A6398200186

Part no. A6398200186

CD Radio Mercedes W639 W906 Audio Stereo Head Unit A6398200186

Product currently unavailable

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BMW Z4 E89 Footwell Light Module Control Unit ECU FRM3R PL2 Lear 9390489

Part no. 9390489

BMW Z4 E89 Footwell Light Module Control Unit ECU FRM3R PL2 Lear 9390489

Product currently unavailable

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Volkswagen VW Touran Door Harness Loom Cable Wiring Front Passenger 1T0971120AC

Part no. 1T0971120AC

Volkswagen VW Touran Door Harness Loom Cable Wiring Front Passenger 1T0971120AC

Product currently unavailable

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Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

Part no. 02Z911024H

Volkswagen Passat B7 Starter Motor Actuator TDI Diesel Engine 02Z911024H

Product currently unavailable

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Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM II 3453743

Part no. 3453743

Mini Cooper One R56 Footwell Light Module High EKS ECU PL3 FRM II 3453743

Product currently unavailable

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Audi A3 8P Stereo Radio Audio CD Player Head Unit 8P0035152E

Part no. 8P0035152E

Audi A3 8P Stereo Radio Audio CD Player Head Unit 8P0035152E

Product currently unavailable

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Mercedes W118 W177 W247 Front Radar Distance Control Unit Module A0009056121

Part no. A0009056121

Mercedes W118 W177 W247 Front Radar Distance Control Unit Module A0009056121

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BMW E46 Positive Battery Cable Plus Pole Lead 6910597

Part no. 6910597

BMW E46 Positive Battery Cable Plus Pole Lead 6910597

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Mercedes W212 OM651.924 E220CDI 170HP Engine Control Unit Module ECU A6519003701

Part no. A6519003701

Mercedes W212 OM651.924 E220CDI 170HP Engine Control Unit Module ECU A6519003701

Product currently unavailable

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BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238

Part no. 1378238-3

BMW E60 E63 E87 E90 E91 Relay Make Contact Orange Bosch 4 Pins Set 1378238

Product currently unavailable

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BMW E60 E81 E87 E90 Snap-in Adapter Basic Telephone NOKIA 6230I

Part no. 6973983

BMW E60 E81 E87 E90 Snap-in Adapter Basic Telephone NOKIA 6230I

Product currently unavailable

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BMW E87 LCI E90 N43 118i 318i Petrol ECU Kit 7595179 DME CAS3 + 2 Keys Automat

Part no. 7595179-4

BMW E87 LCI E90 N43 118i 318i Petrol ECU Kit 7595179 DME CAS3 + 2 Keys Automat

Product currently unavailable

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Seat Module Mercedes W176 W246 Front Left N/S Memory Control Unit A1669008606

Part no. A1669008606-1

Seat Module Mercedes W176 W246 Front Left N/S Memory Control Unit A1669008606

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BMW Z4 E89 Roadster Cabrio Convertible Top Module CTM 09221135 9221135

Part no. 9221135

BMW Z4 E89 Roadster Cabrio Convertible Top Module CTM 09221135 9221135

Product currently unavailable

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BMW E65 Cable Harness Door Panel Card Rear Wiring Loom 6913147

Part no. 6923700

BMW E65 Cable Harness Door Panel Card Rear Wiring Loom 6913147

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Mercedes ML W166 Front Door Module Right O/S Door Control Unit A2059006013

Part no. RHD-A1669005212

Mercedes ML W166 Front Door Module Right O/S Door Control Unit A2059006013

Product currently unavailable

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BMW Mini Cooper One R50 R53 Fuse Box Cover Black 1480793 61131480793

Part no. 1480793

BMW Mini Cooper One R50 R53 Fuse Box Cover Black 1480793 61131480793

Product currently unavailable

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SAM Module Mercedes Sprinter W906 Fuse Box Relay Control Unit A9069006701

Part no. A9069006701-1

SAM Module Mercedes Sprinter W906 Fuse Box Relay Control Unit A9069006701

Product currently unavailable

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Airbag Module Mercedes W207 C207 Coupe Air Bag SRS Control Unit ECU A2079014200

Part no. A2079014200

Airbag Module Mercedes W207 C207 Coupe Air Bag SRS Control Unit ECU A2079014200

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BMW X3 E83 Steering Control Module Unit Servo SVT Servotronic 3404171

Part no. 3404171

BMW X3 E83 Steering Control Module Unit Servo SVT Servotronic 3404171

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BMW E46 E39 E38 E83 E53 E85 E86 Control Unit Voice Input System Module 6915047

Part no. 6915047

BMW E46 E39 E38 E83 E53 E85 E86 Control Unit Voice Input System Module 6915047

Product currently unavailable

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BMW E65 E66 Battery Cable Positive Plus Pole 6904905

Part no. 6904905-2

BMW E65 E66 Battery Cable Positive Plus Pole 6904905

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Audi A5 8T Steering Wheel Air Module Driver's Side 8E0880201DH

Part no. 8E0880201DH

Audi A5 8T Steering Wheel Air Module Driver's Side 8E0880201DH

Product currently unavailable

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Audi TT 8J Starter Motor Engine Diesel Valeo 02M911024N

Part no. 02M911024N

Audi TT 8J Starter Motor Engine Diesel Valeo 02M911024N

Product currently unavailable

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BMW F20 F30 Mini F60 KAFAS 2 Camera Speed Control ECU Module Unit 5A0B302

Part no. 5A0B302

BMW F20 F30 Mini F60 KAFAS 2 Camera Speed Control ECU Module Unit 5A0B302

Product currently unavailable

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Screen Ring Mini F55 F56 F57 Navigation Display Head Unit Trim Cover 9843968

Part no. 9843968

Screen Ring Mini F55 F56 F57 Navigation Display Head Unit Trim Cover 9843968

Product currently unavailable

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BMW E93 ECU Body Control Module Unit PL2RR JBBFE IIIR H3 Junction Box 9227186

Part no. 9227186-1

BMW E93 ECU Body Control Module Unit PL2RR JBBFE IIIR H3 Junction Box 9227186

Product currently unavailable

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Land Rover Range Rover Sport L320 Air Suspension Valve Block Module RVH000055

Part no. RVH000055

Land Rover Range Rover Sport L320 Air Suspension Valve Block Module RVH000055

Product currently unavailable

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BMW F10 F20 F30 Steering Wheel Module Electronics Control Unit 9209427

Part no. 9218381-1

BMW F10 F20 F30 Steering Wheel Module Electronics Control Unit 9209427

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BMW X1 Series F48 Head Air Module Roof Curtain Left N/S 7352601

Part no. 7352601

BMW X1 Series F48 Head Air Module Roof Curtain Left N/S 7352601

Product currently unavailable

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AdBlue SCR Module Mercedes W907 W910 W447 Exhaust Gas Cleaning A0009002126

Part no. A0009002126

AdBlue SCR Module Mercedes W907 W910 W447 Exhaust Gas Cleaning A0009002126

Product currently unavailable

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Audi A1 8X Starter Motor Petrol Engine Electrical Unit Actuator 02M911024J

Part no. 0AM911023TX

Audi A1 8X Starter Motor Petrol Engine Electrical Unit Actuator 02M911024J

Product currently unavailable

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Audi A3 8V Body Control Comfort Unit Module BCM Unit ECU 5Q0937084AJ

Part no. 5Q0937084AJ

Audi A3 8V Body Control Comfort Unit Module BCM Unit ECU 5Q0937084AJ

Product currently unavailable

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BMW E90 LCI Footwell Light Control Module LCM LED Basis 9224595

Part no. 9224595

BMW E90 LCI Footwell Light Control Module LCM LED Basis 9224595

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Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

Part no. A1775407932-1

Mercedes W177 W247 Positive Battery Cable Lead Wire Starter A1775407932

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Audi Q7 4L A1 8X Negative Battery Cable Lead Monitoring Module 8K0915181D

Part no. 8K0915181D

Audi Q7 4L A1 8X Negative Battery Cable Lead Monitoring Module 8K0915181D

Product currently unavailable

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Audio Controller BMW E90 System Control Unit Module Navigation 9186215

Part no. 9186215

Audio Controller BMW E90 System Control Unit Module Navigation 9186215

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Mercedes R171 Door Control Module Front Right O/S A1718206226

Part no. A1718206226

Mercedes R171 Door Control Module Front Right O/S A1718206226

Product currently unavailable

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Mercedes-Benz A-Class W169 CD Player Radio Stereo Head Unit A1698700289

Part no. A1698700289

Mercedes-Benz A-Class W169 CD Player Radio Stereo Head Unit A1698700289

Product currently unavailable

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Audi A5 8T 2.0 TFSI CNCD Quattro 224HP Engine ECU Kit 8T2907115 Key Ignition

Part no. 8T2907115-1

Audi A5 8T 2.0 TFSI CNCD Quattro 224HP Engine ECU Kit 8T2907115 Key Ignition

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BMW X5 Series E53 Light Check Module Control Unit ECU Lear LCM III 6914655

Part no. 6914655

BMW X5 Series E53 Light Check Module Control Unit ECU Lear LCM III 6914655

Product currently unavailable

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VW Volkswagen Tiguan 5N Positive Battery Terminal Cable Lead Wiring 5N0971228

Part no. 5N0971228

VW Volkswagen Tiguan 5N Positive Battery Terminal Cable Lead Wiring 5N0971228

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Volkswagen Polo 6N Aerial Roof Antenna Base Antenna Unit 1J0035505A

Part no. 1J0035505A

Volkswagen Polo 6N Aerial Roof Antenna Base Antenna Unit 1J0035505A

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BMW E81 E87 LCI E90 E91 120d 320d Diesel N47 ECU Kit DDE 7810000 CAS3 + 2 Keys

Part no. 7810000-1

BMW E81 E87 LCI E90 E91 120d 320d Diesel N47 ECU Kit DDE 7810000 CAS3 + 2 Keys

Product currently unavailable

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Volkswagen Touareg 7L Display Screen Multimedia Navigation Unit 7L6035177E

Part no. 7L6035177E

Volkswagen Touareg 7L Display Screen Multimedia Navigation Unit 7L6035177E

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Radio CD Player VW Volkswagen Golf Polo Passat B6 Head Unit RCD310 5M0035186AA

Part no. 5M0035186AA

Radio CD Player VW Volkswagen Golf Polo Passat B6 Head Unit RCD310 5M0035186AA

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Battery Cable Ford S-Max Negative Lead Wiring Harness Cable AG9T-14324-UC

Part no. AG9T-14324-UC

Battery Cable Ford S-Max Negative Lead Wiring Harness Cable AG9T-14324-UC

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Mercedes W166 W221 Auxiliary Additional Generator Battery A0049820008

Part no. A0049820008

Mercedes W166 W221 Auxiliary Additional Generator Battery A0049820008

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Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C

Part no. 8K0915181C

Audi A6 C6 Battery Negative Terminal Cable Wiring Wire 8K0915181C

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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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