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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Land Rover Range Rover L322 Front Tweeter Speaker Left N/S AH42-18808-AC

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Free delivery: Nov 12 – 13

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Porsche Cayman 987 Antenna Aerial Amplifier Radio Booster 98764710500

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Ford Transit Mk7 Engine ECU Unit Module Manual 2.2 TDCi P8FA 86HP AC11-12A650-CC

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Free delivery: Nov 12 – 13

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Audi Q7 4M 3.0 TDI Battery Earth Cable Lead Negative Wiring 4M0971227CB

€37.95

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Ford Transit Mk6 Fuse Box Control Unit Connector Adapter Plug VYC15-14N003-AA

€23.95

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€170.95

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BMW 1 Series F20 F21 LCI Antenna Aerial Noise Suppression Filter 9227470

€23.95

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Part no. PZ3T-18C394-RPC

Ford Transit Custom Mk2 Rear Door Wiring Harness Cable Right O/S PZ3T-18C394-RPC

€42.95

Free delivery: Nov 12 – 13

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Toyota Celica Mk7 Air Module Crash Sensor Front Left N/S 8917420010

€23.95

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Part no. A2215408809

Mercedes W221 Door Harness Wiring Loom Rear Left N/S A2215408809

€32.95

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Part no. 8983020020

Toyota Celica Mk7 Side Air Module Unit Crash Sensor Left N/S 8983020020

€23.95

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Smart 453 Fortwo Telematic Control Unit Bluetooth Module 282750596R

€42.95

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Part no. 03L906023A-1

Volkswagen Golf 5k 1.6 TDI 90HP CAYB Engine Control Unit ECU 03L906023A Manual

€156.95

Free delivery: Nov 12 – 13

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Part no. 4M1959592K

Audi A6 C8 A7 4K Door Module Control Unit ECU Front Passenger Side 4M1959592K

€61.95

Free delivery: Nov 12 – 13

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Part no. 8K1907115A-1

Audi A4 B8 1.8 TFSI CABB 160HP Engine Control Module Unit ECU 8K1907115A Manual

€80.95

Free delivery: Nov 12 – 13

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Engine Wiring Mercedes Vito W447 OM651 Engine Harness Cable A4474404705

€23.95

Free delivery: Nov 12 – 13

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Part no. YDB500290

Land Rover Discovery 3 L319 Windscreen Rain Sensor ECU Control Unit YDB500290

€23.95

Free delivery: Nov 12 – 13

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Part no. A1779059402

Mercedes W177 Remote Car Key Electronic A1779059402

€94.95

Free delivery: Nov 12 – 13

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Part no. 7634297-5

BMW F20 N13B16A 170HP Engine Control Module ECU Kit DDE 7634297 Automatic

€427.95

Free delivery: Nov 12 – 13

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BMW 5 Series E60 E61 LCI Centre Console Switch Cluster Control Unit ECU 9113064

€23.95

Free delivery: Nov 12 – 13

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Part no. A1638200289

Mercedes-Benz M-Class M W163 Aerial Antenna Amplifier Module Unit A1638200289

€23.95

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Mini F54 F55 F56 F57 F60 B+ Distributor Clubman Countryman Active Tourer 9321024

€42.95

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Part no. 5NA945308E-2

Volkswagen Tiguan Mk2 Tailgate Inner LED Light Lamp Wiring Right O/S 5NA945308E

€23.95

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Audi A3 S3 RS3 8V Entry Keyless Kessy Control Module Unit ECU 3Q0959435F

€23.95

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Part no. CPLA-17D547-AP

Land Rover Discovery Sport L550 Windscreen Rain Sensor Module CPLA-17D547-AP

€23.95

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Part no. 8S0947355

Audi TT FY 8S LED Module Light Unit Wiring Harness 8S0947355

€23.95

Free delivery: Nov 12 – 13

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Part no. A2118703285

Mercedes W211 Door Module Rear Right O/S Control Unit ECU A2118703285

€23.95

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Part no. BS7T14B321AC

Ford Mondeo Mk3 Air Unit Control Module ECU Restraint BS7T-14B321-AC

€42.95

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Part no. A2118704885

Mercedes W164 W211 Front Passenger Seat Memory Control Unit Module A2118704885

€32.95

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Part no. 6R0971349BP

Audi A1 8X Alternator Wiring Cable Loom Harness 1.6 TDI Diesel 6R0971349BP

€23.95

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Part no. 9231443

BMW 3 Series F30 F80 M3 Radio Antenna Amplifier Suppression Filter 9231443

€23.95

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Part no. 6C1T-14A067-EA-1

Ford Transit Mk7 Battery Terminal Fuse Box Cover Lid Top 6C1T-14A067-EA

€32.95

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Part no. 8D0972695

Audi R8 42 Diagnostic Plug Connector Wiring Loom Cable Harness 8D0972695

€23.95

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€28.95

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Part no. 8K0971104AC

Audi RS4 A4 B8 8K Parking Sensors Rear Bumper Wiring Loom 8K0971104AC

€42.95

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Ford Ranger Mk3 Battery Holder Tray Bracket Power Distribution Box EB3T-14A254-A

€32.95

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Mercedes CL W216 W221 Air Module Control Unit A2218702993

€23.95

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Part no. PZ3T-13B551-BBC

Ford Transit Custom Mk2 Door Wiring Loom Harness Rear Right O/S PZ3T-13B551-BBC

€56.95

Free delivery: Nov 12 – 13

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Part no. T2H28144

Jaguar XF X260 Rear Bumper Wiring Harness Loom Parking Sensor PDC T2H28144

€32.95

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BMW F45 Battery Management Electronics Control Module 9470053

€51.95

Free delivery: Nov 12 – 13

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Part no. XBC001321-2

Range Rover L322 Front Headlight Lamp Right O/S Harness Loom Wire XBC001321

€23.95

Free delivery: Nov 12 – 13

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Part no. A6519009702-4

Mercedes W176 OM651.930 136HP Engine Control ECU Kit A6519009702 Manual

€189.95

Free delivery: Nov 12 – 13

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Part no. 059903143BH

Audi A6 C8 Q7 4M A8 D5 Alternator Bracket Mount Holder Support 059903143BH

€66.95

Free delivery: Nov 12 – 13

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Mini R60 R61 Countryman Paceman Bonnet Earth Cable Strap Wire 9806342

€23.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 8P0907279A

Audi A3 8P Body Control Comfort Module BCM Unit ECU 2.0 FSI Petrol 8P0907279A

€28.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 6W4X-15A563-AC

Jaguar X-Type X400 Dashboard Glove Box Lamp Opener Sensor 6W4X-15A563-AC

€23.95

Free delivery: Nov 12 – 13

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Part no. 8X0971030M

Audi A1 S1 8X 3D Door Wiring Harness Loom Cable Passenger Side 8X0971030J

€23.95

Free delivery: Nov 12 – 13

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Part no. 30659314

Volvo V70 2.0 Diesel Engine Starter Motor Volvo 30659314

€23.95

Free delivery: Nov 12 – 13

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Part no. 83A945091-2

Audi Q3 F3 Outer Rear Tail Light Plug Wire Cable Connector Left N/S 83A945091

€23.95

Free delivery: Nov 12 – 13

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Part no. 8795109

BMW X3 G01 Rear Bumper PDC Wiring Loom Parking Sensor Cable Harness 8795109

€85.95

Free delivery: Nov 12 – 13

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Part no. 6G9T-14K131-AB

Land Rover Range Rover L322 Fuse Relay Box 6G9T-14K131-AB

€23.95

Free delivery: Nov 12 – 13

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Part no. 5Q0915321J

Audi Q2 Seat Leon VW Golf Battery Tray Holder Mounting Bracket 5Q0915321J

€23.95

Free delivery: Nov 12 – 13

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Part no. 4G1035021E

Audi A7 4G Radio Navigation CD Player Control Head Unit 4G1035021E

€1,329.95

Free delivery: Nov 12 – 13

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Part no. F30-NBT-CP

Unbranded BMW F30 NBT Multimedia Screen Display Radio Navigation F30-NBT-CP

€237.95

Free delivery: Nov 12 – 13

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Telematics Module Mini F55 LCI 4g Bluetooth Control Module Unit Ecu 9876796

€56.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 9300859

BMW X5 F15 Fuel Tank Cable SCR AdBlue Unit Adapter Wiring Harness Diesel 9300859

€28.95

Free delivery: Nov 12 – 13

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Part no. HK52-15C859-AD

Land Range Rover Sport L494 PDC Parking Aid ECU Control Unit HK52-15C859-AD

€70.95

Free delivery: Nov 12 – 13

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Part no. 03G903016N

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

€56.95

Free delivery: Nov 12 – 13

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Part no. DK52-14A583-AD

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€80.95

Free delivery: Nov 12 – 13

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Part no. 8578945-6

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€237.95

Free delivery: Nov 12 – 13

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€28.95

Free delivery: Nov 12 – 13

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€23.95

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€23.95

Free delivery: Nov 12 – 13

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Part no. 83A945094D-1

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€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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BMW F10 F20 F30 LCI Alternator Generator Unit Diesel B47 7646814

€66.95

Free delivery: Nov 12 – 13

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Volkswagen Golf Mk7 Headlight Head Lamp Range Control Unit Module ECU 7P6907357D

€75.95

Free delivery: Nov 12 – 13

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€47.95

Free delivery: Nov 12 – 13

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BMW Z4 E85 E86 Negative Minus Battery Cable Lead Wiring Loom 8374991

€23.95

Free delivery: Nov 12 – 13

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Part no. A4539052600

Smart Fortwo C453 Aerial Antenna Rod Radio GPS Antenna Unit A4539052600

€56.95

Free delivery: Nov 12 – 13

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Part no. 1S0919275D-CAN

Audi A7 4G PDC Parking Distance Sensor SET X4 Candy White - B9A F9E 1S0919275D

€47.95

Free delivery: Nov 12 – 13

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Part no. 8W0941044A-1

Audi A4 B9 Headlight Bi-Xenon Headlamp Front Right O/S Harness Wire 8W0941044A

€23.95

Free delivery: Nov 12 – 13

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Part no. BV6T-14E073-BAD

Ford Focus Mk3 Front Door Wiring Loom Harness Right O/S BV6T-14E073-BAD

€37.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. DPLA-12C520-PAC

Range Rover Sport L494 Engine Control ECU 3.0 Diesel 292HP Auto DPLA-12C520-PAC

€189.95

Free delivery: Nov 12 – 13

If paid before 14:00

Part no. 04L907309K-4

Volkswagen Caddy Mk3 2.0 TDI DFSD 102HP Engine Control ECU Kit 04L907309K Manual

€113.95

Free delivery: Nov 12 – 13

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Part no. 4545045

Ford Transit Mk6 Fuse Box Control Unit Connector Adapter Plug 2C1T-14N003-CA

€23.95

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Part no. HJ32-12A610-DB

Land Rover Discovery L550 Glow Plug Relay Bracket Mount Support HJ32-12A610-DB

€23.95

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Land Rover Range Rover L322 Engine Bay Fuse Box 3.6 368DT Diesel YQE500390

€23.95

Free delivery: Nov 12 – 13

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Smart 453 Fortwo Air Conditioning Heater Climate Control Unit A4539003802

€23.95

Free delivery: Nov 12 – 13

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€23.95

Free delivery: Nov 12 – 13

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Audi A4 B8 Rear Door Taillight Lamp Wire Harness Loom Cable Right O/S 8K5945094D

€23.95

Free delivery: Nov 12 – 13

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Part no. DPLA-14F70-AB

Range Rover Sport L494 Power Distribution Control Module Unit DPLA-14F70-AB

€28.95

Free delivery: Nov 12 – 13

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Part no. A6429005101

Mercedes W166 X204 W212 W221 AdBlue Control Module ECU 3.0 Diesel A6429005101

€66.95

Free delivery: Nov 12 – 13

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Range Rover L405 Tailgate Deployable Towbar Module Unit ECU HK6M-19H544-BF

€165.95

Free delivery: Nov 12 – 13

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BMW F10 F11 On-Board Screen Central Information Display Camera 10,25" 4+64G

€284.95

Free delivery: Nov 12 – 13

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Mini Navigation Head Unit R55 R56 R57 LCI R60 R61 CHAMP 2 Sat Nav DAB 9257090

€332.95

Free delivery: Nov 12 – 13

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Ford Transit Mk8 Wiper Motor Plug Wiring Loom Harness Connector BK3T-17A477-BA

€37.95

Free delivery: Nov 12 – 13

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Audi A4 Avant B7 Bose Stereo Radio Sound System Amplifier Module 8E5035223E

€23.95

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Range Rover Evoque L538 Rear Tail Light Lamp Connector Wire Right O/S LR037710

€23.95

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VW Volkswagen Touareg 7L Radio Player Navigation Sat Nav Head Unit 7L6035195

€70.95

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Part no. F1BT-18C815-GK

Ford Transit Mk8 Radio Player CD Multimedia Head Unit Module F1BT-18C815-GK

€32.95

Free delivery: Nov 12 – 13

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BMW 5 X5 Series E39 E53 Dual Band Cable Compensator Hands Free Phone 6907520

€23.95

Free delivery: Nov 12 – 13

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Part no. 9224687

BMW Mini Clubman R55 LCI Cable Wiring Loom Splitdoor Door Rear Left N/S 9224424

€23.95

Free delivery: Nov 12 – 13

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BMW 7 Series E65 E66 E67 Seat Control Unit Module Heating 6918567

€23.95

Free delivery: Nov 12 – 13

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Part no. 6928523

BMW 3 Series E46 M47N Diesel Negative Earth Cable Battery 6928523

€23.95

Free delivery: Nov 12 – 13

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