What is the construction and purpose of automotive electrical systems?

Automotive electrical systems are a set of components responsible for starting, charging, powering consumers, and controlling vehicle electronics. They include, among others, the battery, alternator, starter, fuses, relays, controllers, and wiring harnesses. These components are located in different parts of the car and work together through connectors and signal buses.

What are automotive electrical systems used for?

Automotive electrical systems are used to supply energy and transmit control signals to vehicle components. Thanks to them, it is possible to start the engine, charge the battery, and operate lights, windows, air conditioning, and safety systems. A fault in one circuit can affect not only comfort but also the correct operation of other modules.

What role does the wiring harness play in a car?

The wiring harness is an organized set of wires, covers, and connectors that connects individual consumers and controllers in the vehicle. It is used to transmit power, ground, and signals between modules. Its construction depends on the body version, equipment, and mounting location, so when replacing it, you must compare the wire routing, plug type, and number of pins.

How to choose an electrical part for a specific car?

The safest way is to compare the OEM number, manufacturer number, connector type, and mounting location. It is also worth considering the engine version, year of manufacture, body type, and equipment, as the same model may have different variants of the alternator, starter, or controller. In practice, verification by VIN is very helpful.

What symptoms indicate a problem with the electrical system?

Typical signals include difficulty starting, flashing warning lights, dimming lights, unstable charging, or the failure of selected consumers. In some cases, controller errors, air conditioning malfunctions, or periodic power outages also occur. Symptoms must always be linked to a specific circuit and cooperating component.

How to take care of automotive electrical systems in daily use?

The basis is regular inspection of the battery condition, terminals, ground wires, and charging. It is also good to check the tightness of housings, the condition of harness insulation, and the cleanliness of contacts exposed to moisture. A quick reaction to the first symptoms of voltage drops or electronic errors makes it easier to avoid a major failure.

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 Golf 8 Rain Sensor Front Windscreen 5Q0955559C

€23.95

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Part no. 8J0971349A

Audi TT 8J Alternator Main Cable Wiring Harness Loom 8J0971349A

€32.95

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Part no. 8583423-11

Mini Countryman R60 Engine Control Unit ECU 113HP Manual 1.6 Diesel 8583423 Kit

€332.95

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Audi A3 8P Multimedia Stereo Sat Nav CD Player Radio Head Unit 8P0057186CX

€56.95

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Part no. 98016073XT

Citroën C4 Grand Picasso Radio CD Player Head Unit Control Panel 98016073XT

€28.95

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Part no. 1436340

BMW E36 E46 Engine Bay Battery Cable Guide 1436340

€23.95

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Part no. 1K8907159

Volkswagen Scirocco III Mk3 Impact Sound Control Module Unit 1K8907159

€23.95

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Part no. 4M0971677B

Audi Q7 4M Impact Sensor Unit Wiring Loom Harness Connector 4M0971677B

€56.95

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Part no. 4G5971035AS

Audi RS6 C7 Front Door Wiring Harness Cable Loom Right O/S 4G5971035AS

€51.95

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Part no. 8X0907159B

Audi A1 8X Fuel Pump Module Control Unit ECU 8X0907159B

€32.95

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Part no. 8607569

BMW X5 F15 40eX N20 Hybrid Starter Motor Automatic Transmission 8607569

€170.95

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Part no. 4K0971349E

Audi A6 C8 A7 Alternator Positive Battery Wiring Harness Loom 4K0971349E

€51.95

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Part no. 8N7035223A

Audi TT 8N Roadster Bose Amplifier Audio Sound AMP 8N7035223A

€113.95

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Part no. LHD-HC-8613-R56-1

Mini R56 R57 R58 Display Screen Dashboard Android Carplay HC-8613

€165.95

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Part no. DH52-13W029-AB

Land Rover Freelander 2 L359 Headlight Wiring Front Right O/S DH52-13W029-AB

€23.95

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Part no. 7801216-1

BMW X3 E83 2.0d 150HP M47N2 Diesel Engine Control ECU DDE Kit 7801216 Manual

€398.95

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Part no. 4E0906230

Audi A4 B8 A5 8T A6 C7 A7 4G Fuse Box Relay Wiring Harness Cable Plug 4E0906230

€23.95

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Part no. 7605478

BMW 1 3 Z4 Series F20 F30 E89 Petrol Alternator 170A 7605478

€37.95

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Part no. 8571350

BMW 1 5 Series F10 F11 F20 F21 LCI B47 Starter Acoustic Vibration Plug 8571350

€23.95

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Part no. 03G906016JD-1

Audi A4 B7 2.0 TDI 140 HP Engine Control Unit ECU + Key Manual 03G906016JD

€113.95

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Part no. YWC500261

Land Rover Freelander L314 Imoobiliser Control Unit Module YWC500261

€32.95

Free delivery: Sep 15 – 16

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Part no. 81A945069C-1

Audi Q2 GA Rear Side Taillight Boot Lid Lamp Wiring Loom Left N/S 81A945069C

€23.95

Free delivery: Sep 15 – 16

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Part no. 307380350-AB

Range Rover Evoque L538 Steering Wheel Wiring Loom Harness Cable 307380350-AB

€23.95

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Part no. A2055406921

Battery Wiring Mercedes X253 Diesel OM651 Alternator Harness Cable A2055406921

€23.95

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Part no. 6978713

BMW E60 Body Control Module ECU Control Unit KBM Basis 6978713

€23.95

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Part no. HX63-18K812-CB

Range Rover Evoque L538 Radio Head Unit Multimedia Navi Player HX63-18K812-CB

€66.95

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Part no. 1K0971615BH

VW Golf Mk5 Audi A3 8P Engine Wiring Harness Loom Cable Guide 1K0971615BH

€23.95

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Part no. 3C4971689K

Volkswagen Passat B6 Rear Door Wiring Adapter Cable Left Right N/O/S 3C4971689K

€23.95

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Part no. 9350676

Mini Cooper One F54 F55 F56 F60 ECU Body Domain Controller BDC Module 9350676

€99.95

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Part no. A2075405105

Mercedes W204 C207 W212 Panoramic Sunroof Wiring Cable Harness A2075405105

€28.95

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Part no. 2371741

Mini F55 F56 Battery Cable Positive Battery Alternator Starter Wiring 2371741

€23.95

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Part no. 6964263

BMW 3 Series E93 E93N Cabrio Module Bracket Holder CTM 6964263

€23.95

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Part no. 7510738-7

Ignition Coil Mini R50 R52 R53 Petrol W10 Coil Pack Module Unit 7510738

€23.95

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Part no. 8507915

Engine Wiring BMW F20 F30 N47S1 EU5 Loom Module Harness Cable 8507915

€75.95

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Part no. 4F0907468B

Audi A6 C6 4F Gateway Control Unit Module ECU 4F0907468B

€23.95

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Part no. 7300272-2

BMW F01 Rear Tail Light Wiring Harness Cable Plug Right O/S 7300272

€23.95

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Part no. 8H0035225M

Audi A4 S4 B6 B7 Antenna Amplifier Right O/S 8H0035225M

€80.95

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Part no. 35962

BMW X3 Series E53 E83 iPod Interface Retrofit Connection Module 0035962

€23.95

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Part no. 8510221-13

BMW E90 E91 LCI E92 325d Diesel N57 204HP ECU Engine Kit DDE 8510221 Automatic

€132.95

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Part no. 99660410300

Porsche Boxster 986 2.7 Petrol Engine Starter Motor Unit 99660410300

€28.95

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Part no. A6421507391-1

Mercedes W221 OM642.930 235HP Engine Control ECU Kit A6421507391 Automatic

€127.95

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Part no. 1754296

Ford Mondeo Mk3 Starter Motor Fuse Link Electrical Wiring Cable AG9T-14A280-GAC

€32.95

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Part no. 6580ZA

Citroën C4 Grand Picasso Fuse Relay Box Control Unit Module 6580ZA

€94.95

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Part no. 00052219047

Fiat Ducato Air Module Control Unit ECU 00052219047

€132.95

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Part no. 4N0035223C

Audi A6 C8 Audio Sound Amplifier Bang & Olufsen Stereo System Module 4N0035223C

€189.95

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Part no. 4K0971228R

Audi A6 C8 A7 Starter Wiring Harness Cable Earth Line 4K0971228R

€113.95

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Part no. A2075406932

Mercedes A207 Boot Tailgate Wiring Loom Harness Cable A2075406932

€28.95

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Part no. 4H0937555

Audi A8L 4H Fuse Box Relay Chamber Lower Cover Lid Housing 4H0937555

€23.95

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Part no. A1698202561

Mercedes W245 Headlight Headlamp Lamp Light Wiring Front Left N/S A1698202561

€23.95

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Part no. 3T0971387A

Skoda Superb Mk2 Window Lifter Motor Wiring Cable Front Rear Door 3T0971387A

€23.95

Free delivery: Sep 15 – 16

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Part no. 8W1959595J

Audi Q5 FY Door Control Module Unit ECU Left Right N/O/S 8W1959595J

€23.95

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Part no. YWC500142

Land Rover Freelander L314 Parking Aid Control Module PDC ECU YWC500142

€32.95

Free delivery: Sep 15 – 16

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Part no. 7E0937617-1

Volkswagen Transporter T5 Fuse Box Control Module Unit 7E0937617

€23.95

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Part no. 7PP959792L

Porsche Cayenne 92A Front Door Control Module ECU Right O/S 7PP959792L

€23.95

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Part no. 5B39BC7

BMW U06 Active Tourer U11 Parking Assistance Module Control PDC Unit 5B39BC7

€32.95

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Part no. 7805585

BMW X5 E70 3.0d M57N2 235HP Engine Control Unit ECU DDE 7805585 Automatic

€246.95

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Part no. A9075409482

Fuse Box Mercedes Sprinter W907 Prefuse Box Module Relay Holder A9075409482

€47.95

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Part no. 9393144

BMW G11 G30 Fuse Box Power Distribution Electrical Control Unit Box Rear 9393144

€47.95

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Part no. A2124407038

Negative Cable Mercedes W212 Battery Earth Wiring Loom A2124407038

€23.95

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Part no. 3T0837202L

Skoda Fabia 5j Flip Key Remote Control 3 Button Foldable Transponder 3T0837202L

€23.95

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Part no. A2535402128

Mercedes X253 Starter Motor Wiring Harness Cable A2535402128

€66.95

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Part no. A2038205185

Mercedes W203 W209 C215 Phone Control Module A2038205185

€23.95

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Part no. C1B1-12C514-AB

Ford Transit Courier Engine Control Unit ECU Trim Cover Holder C1B1-12C514-AB

€23.95

Free delivery: Sep 15 – 16

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Part no. A0009050238

Windscreen Camera Mercedes W204 W212 Front Windshield Camera Unit A0009050238

€23.95

Free delivery: Sep 15 – 16

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Part no. 7621860

Mini Cooper One R55 R56 R57 Control Unit Module Bracket Holder EGS 7621860

€23.95

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Part no. A1665402102

Battery Cable Mercedes W166 C292 Starter Alternator Wiring Harness A1665402102

€47.95

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Part no. VIBE

Vibe Speaker Tweeter Loudspeaker Car Audio Black Air 20mm

€42.95

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Part no. 8H1971029AP

Audi A4 Convertible Front Door Wiring Loom Passenger Side 8H1971029AP

€28.95

Free delivery: Sep 15 – 16

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Part no. 5N0035342F

VW Volskwagen Polo 6R Multimedia Electronic Control Interface Module 5N0035342F

€23.95

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Part no. F1FT-10C679-BA

Ford Transit Mk7 Focus Mk3 Negative Battery Cable Terminal F1FT-10C679-BA

€23.95

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Part no. 8691841-1

Mini F55 F56 One B38 102HP Engine Control Unit Module ECU Kit 8691844 Manual

€237.95

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Part no. 7H0937550A

Volkswagen Trasnporter T5 Main Fuse Socket Engine Bay Panel Module 7H0937550A

€23.95

Free delivery: Sep 15 – 16

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Part no. 5K0937085AA

VW Volkswagen Caddy 2K BCM Comfort Body Control Module Unit 5K0937085AA

€51.95

Free delivery: Sep 15 – 16

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Part no. A1765401505

Mercedes C117 W176 Interior Centre Console Cable Wiring Loom A1765401505

€23.95

Free delivery: Sep 15 – 16

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Part no. 8714480

BMW 1 F40 Door Loom Rear Right O/S 8714480

€32.95

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Part no. 5H22-15K602-AB

Land Rover Discovery 3 L319 Antenna Amplifier Control Unit 5H22-15K602-AB

€23.95

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Part no. SJYN0097A

Motorola Bluetooth Hands-free Audio Connection Control Unit Module SJYN0097A

€23.95

Free delivery: Sep 15 – 16

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Part no. 7581848

BMW E81 E87 LCI E90 116i 316i N45N 116HP Engine ECU Unit DME 7581848 Manual

€208.95

Free delivery: Sep 15 – 16

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Part no. 02M911024N

Audi TT 8J Starter Motor Engine Diesel Valeo 02M911024N

€28.95

Free delivery: Sep 15 – 16

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Part no. 8513249

BMW X3 F25 20dX Diesel N47N 184HP Engine Module ECU DDE 8513249 Automatic

€47.95

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Part no. 4K0971845

Audi A6 C8 Fuse Relay Box Mount Bracket Holder Mount 4K0971845

€32.95

Free delivery: Sep 15 – 16

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Part no. A2045403750

Mercedes W204 SAM Module Control Unit Electrical Fuse Box Unit A2045403750

€89.95

Free delivery: Sep 15 – 16

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Part no. 9807162780

Citroen Relay Jumper 35L Alternator Bracket Belt Tensioner Holder 9807162780

€104.95

Free delivery: Sep 15 – 16

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Part no. A2129004518

Door Control Unit Mercedes W204 W207 W212 Front Left N/S Module ECU A2129004518

€23.95

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Part no. 1K0971615BL

Volkswagen Passat B6 Golf Mk5 Gearbox Wiring Harness Cable Guide 1K0971615BL

€23.95

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Part no. FK72-13193-AE-2

Land Rover Discovery L550 Rear Inner Tail Light Wiring Left N/S FK72-13193-AE

€23.95

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BMW X3 Series E83 M57N2 3.0d Diesel Cable Alternator-Starter-Base B 3401995

€23.95

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Part no. 8K5907357A

Audi A4 B8 A5 8T Headlight Range Control Unit Module ECU 8K5907357A

€32.95

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Mercedes C219 Seat Harness Wire Loom Electric Line Front Left N/S A2198201604

€32.95

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Part no. A2055406304

Mercedes W205 Hybrid Battery Cable Starter Wiring Loom Harness A2055406304

€32.95

Free delivery: Sep 15 – 16

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Part no. 11131885

Vauxhall 4-Pin Red Relay 12V 30A HFV6-G/12HT-R(265) 11131885

€23.95

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Part no. 8E0941004AK-1

Audi A4 B7 Headlight Wiring Harness Cable Plug Right O/S 8E0941004AK

€23.95

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Part no. 94520-4H0004X

Hyundai H-1 Dashboard Panel Digital Clock Watch Unit 94520-4H0004X

€28.95

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Part no. 1828011

Ford Transit Mk8 USB AUX Port Socket Connection Media Adapter BK31-V044K62-AB

€28.95

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Part no. 3S7T-17D547-AB

Ford Focus Mk2 Front Window Windscreen Rain Light Sensor Unit 3S7T-17D547-AA

€23.95

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Part no. 3N11-19N236-AA

Ford Focus Titanium Power Outlet Input Receptacle Socket 12V 10A 3N11-19N236-AA

€23.95

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Part no. A2661501233

Engine Wiring Mercedes W169 W245 M266 Petrol Cable Loom Harness A2661501233

€56.95

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Part no. A2058200704

Sunroof Wiring Mercedes W205 X253 Panoramic Roof Motor Cable Harness A2058200704

€23.95

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Part no. 4F0903291

Audi A6 C6 3.0 TDI Suppression Condenser Noise Filter 4F0903291

€23.95

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