Automotive electrical systems
More informationAt 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.
Make
Category
Subcategory
Condition
In Stock
Price
-30%
Part no. A4479009808
Mercedes Vito W447 Fuse Box Relay Control Unit Electric Module SAM 4479009808
Promo price
PLN 664.95
PLN 465.47
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 7645837
BMW i3 I01 Electric Gearbox Gear Shifting Actuator Module Unit 7645837
Promo price
PLN 474.95
PLN 332.47
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 5N0035552K
VW Tiguan 5N Antenna Amplifier Module Control Right O/S Unit 5N0035552K
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 7512967-1
Mini Cooper R50 R52 R53 Base B Terminal Point Engine Compartment 7512967
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 5Q0959651
Audi A3 8V Front Impact Sensor Crash Detection Module Unit 5Q0959651
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8E0959643B
Audi A4 B7 Crash Impact Airbag Sensor Unit Module 8E0959643B
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 5QS959655A
Audi A3 S3 8Y Air Module Crash Impact Sensor Unit Control ECU 5QS959655A
Promo price
PLN 1,044.95
PLN 731.47
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A0038208426
Crash Sensor Mercedes ML W164 W221 Front Rear Impact Airbag Unit A0038208426
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
Part no. 3Q0907338
Audi S3 8V Front Headlight Lamp Range Control Module ECU 3Q0907338
PLN 237.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A2125455640
Mercedes W212 Battery Holder Mount Bracket Support E-Class A2125455640
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 23
If paid before 14:00
Part no. 5Q0959592L
Volkswagen Golf Mk8 Front Door Passenger Side Module Control Unit 5Q0959592L
PLN 75.95
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9223682
BMW X5 X6 Series E70 E71 Dashboard Onboard Monitor Display Screen 8,8" 9223682
Promo price
PLN 303.95
PLN 273.56
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 03L906018LA-1
Audi A6 C7 2.0 TDI CGLC 177HP Engine Unit ECU Kit 03L906018LA 2 Keys Ignition
Promo price
PLN 854.95
PLN 598.47
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8V7035225B
Audi A3 8V Antenna Amplifier Rear Right O/S 8V7035225B
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9244426
BMW X5 E70 Rear Bumper PDC Cables Wiring Loom Set 9219647
Promo price
PLN 218.95
PLN 197.06
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 6807633
Control Unit BMW F01 F07 F10 F11 F25 Air Module ECU Unit Continental 6807633
Promo price
PLN 142.95
PLN 100.07
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 4M0959595N
Audi Q7 4M Rear Door Control Module Unit ECU Left Right N/O/S 4M0959595N
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 1K0955559M
Volkswagen VW Golf Mk5 Rain Sensor Windscreen Control Unit Module 1K0955559M
PLN 42.95
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 4G2971228DQ
Audi A6 A7 4G 3.0 TDI Starter Alternator Wiring Harness 4G2971228DQ
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. A6229000500
Mercedes W447 OM622.951 Engine Control Unit Module ECU Kit A6229000500 Manual
Promo price
PLN 949.95
PLN 664.97
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 7852129
Alternator BMW F90 M5 F91 M8 S63M Petrol Engine Generator 250A Valeo 7852129
Promo price
PLN 1,614.95
PLN 1,453.46
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9240943
Mini Cooper R55 R56 LCI R60 Electrical System Fuse Distribution Box 9240943
Promo price
PLN 132.95
PLN 119.66
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 02M911024P
Audi A3 8P 2.0 TDI CBBB Diesel Starter Motor 02M911024P
PLN 142.95
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 5C0937819R
Volkswagen Beetle 5C Fuse Box Relay Module Unit 5C0937819R
PLN 237.95
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 9119578
Antenna Amplifier BMW Z4 E85 E86 Rod Antenna Unit Module 9119578
PLN 47.95
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9118611
BMW Z4 E86 Hifi Audio Sound AMP Amplifier Module 9118611
Promo price
PLN 2,374.95
PLN 2,137.46
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 9130313
BMW 3 Series E93 E93N LCI Cabrio Battery Cable Plus Pole 9130313
PLN 759.95
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 9325537
BMW 5 Series F10 Electric Parking Brake Module Cable Wiring Loom 9325537
PLN 94.95
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. A2049005503
Mercedes C207 Complete Damper Adjustment Control Module ECU A2049005503
Promo price
PLN 284.95
PLN 199.47
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9807169
Mini Cooper One R56 R55 R58 R60 R61 Air Module Control Unit ECU 9807169
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 8685853
BMW F40 X1 F48 Mini F55 F56 F60 Engine Injector Wiring Loom Harness 8685853
Promo price
PLN 284.95
PLN 199.47
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 7P6035670B
VW Volkswagen Touareg 7P CD Radio Stereo Head Unit Panel 7P6035670B
PLN 1,519.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 7823310
BMW 3 Series F30 F31 330d 330dX N57N Diesel Alternator Starter Cable B+ 7823310
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 7823420
BMW E60 E87 E90 LCI N47 120d 320d 520d ECU Control Unit DDE 7823420
Promo price
PLN 427.95
PLN 299.57
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A2129009605
Fuse Box Mercedes W204 W212 Diesel Front Sam Control Module Unit A2129009605
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A2048704626
Door Module Mercedes W204 Rear Right O/S Control Unit Module A2048704626
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A2075403434
PDC Wiring Mercedes W204 W207 Parktronic Parking Sensor Cable Rear A2075403434
Promo price
PLN 75.95
PLN 72.15
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A1725400433
Electric Wire Mercedes SLK R172 M271 Alternator Prefuse Box Wiring A1725400433
Promo price
PLN 93.95
PLN 84.56
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A2045420623
Mercedes W204 Warning Device Parktronic Display Rear Sound Signal A2045420623
Promo price
PLN 85.95
PLN 81.65
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 7L5971104E
Porsche Cayenne 9PA Rear Bumper Wiring Harness PDC Loom Cable 7L5971104E
PLN 379.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8385498-1
BMW 7 Series E65 E66 E67 Support Bracket Navigation Computer 8385498
Promo price
PLN 46.95
PLN 44.60
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A2049060105
Mercedes W204 SAM Control Unit Module Fuse Box Relay Rear A2049060105
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 8506442
BMW E81 E82 E87 LCI E88 123d Petrol N47S 204HP ECU Engine DDE 8506442 Manual
Promo price
PLN 664.95
PLN 465.47
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8661071
BMW Mini Cooper F55 F56 F57 Integrated Supply Module Z11 8661071
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 8671504-1
Starter BMW G20 G21 G30 G32GT G01 G05 Starter Motor Valeo 8671504
Promo price
PLN 237.95
PLN 214.16
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9335243
Head-Up Display Mini Cooper F54 F55 F56 F57 Hud Project Dash Screen 9335243
Promo price
PLN 949.95
PLN 854.96
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 6907519-1
BMW 7 SERIES E65 E66 E67 Battery cable plus pole 6907519
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 9361116
BMW F10 LCI Body Control Module ECU Unit JBBFEIII V2 PL6 9361116
Promo price
PLN 237.95
PLN 166.57
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9142398
Mini Cooper R55 R56 Cable Wiring Set HiFi Driver's Side 9142398
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8U0907468AQ
Audi A1 8X Central Gateway Control Unit Module Relay ECU 8U0907468AQ
Promo price
PLN 85.95
PLN 81.65
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9247081
BMW X1 E84 Wiring Loom Harness Passenger Side 9247081
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A2129008707-1
Mercedes W212 Display Screen Multifunction Dashboard Control Unit A2129008707
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 7807802-1
BMW X5 E70 LCI X6 E71 N57 N57S Cable Alternator Starter Base B Wiring 7807802
Promo price
PLN 85.95
PLN 81.65
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 7810980-1
BMW E60 E90 X5 E70 3.0sd 335d 535d M57N2 Engine ECU KIT DDE 7810980 CAS3 + Key
PLN 2,279.95
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 8586540-5
BMW F30 F32 LCI 330d 430d N57N 258HP Control Unit ECU Kit DDE 8586540 FEM Key
Promo price
PLN 1,495.95
PLN 1,047.17
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 7638003
BMW F20 F21 F22 F23 F34 LCI F22 F30 F36 Starter Ground Cable 7638003
PLN 94.95
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. A2139002817
Mercedes W177 W205 C257 Radar Sensor Front Control Unit Module A2139002817
Promo price
PLN 712.95
PLN 499.07
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 6855558
BMW F20 F21 F22 F30 F31 ECU ICM Plus Control Unit Module 6855558
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 8P0035785
Audi A3 8P MMI Multimedia Interface Unit Module Control ECU 8P0035785
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 6938226-2
BMW 3 Series 2 E90 E91 LCI M3 Wiring Loom Rear Door Left Right 6938226
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A2098209610
Mercedes CLK W209 Convertible Alarm Anti Theft System Control Unit A2098209610
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 6968650
BMW 3 Series E93 E93N LCI Aerial Antenna Amplifier FM/AM Right O/S 6968650
Promo price
PLN 47.95
PLN 45.55
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A2229009915
Keyless Module Mercedes W205 W213 ECU Door Lock Control Unit A2229009915
Promo price
PLN 66.95
PLN 60.26
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 4H0959795E
Audi A8 4H Rear Door Module Control Unit Left Right N/O/S 4H0959795E
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 1508931-1
Mini Cooper S R53 Positive Battery Cable Plus Pole Wiring Loom Harness 1508931
PLN 332.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9268438
BMW F10 F11 F01 F02 F03 Crash Impact Air Module Central Sensor Unit 9268438
Promo price
PLN 94.95
PLN 90.20
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9154331
BMW MINI Clubman R55 Cable Wiring Loom Splitdoor Split Door Rear Right O/S
Promo price
PLN 66.95
PLN 63.60
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 141951253B-3
Audi VW Volkswagen Seat Relay Number 53 Unit Module 4 Pins Set Of 2 141951253B
PLN 42.95
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9244422
BMW X5 E70 LCI Front Bumper PDC Loom Cables Wiring Set 9244422
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 9384100
Mini F54 Clubman F60 Countryman KaFAS Camera Windscreen Unit Front 9384100
Promo price
PLN 142.95
PLN 128.66
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 3455306-2
4 x Mini R57 Cabrio Convertible DWA Door Alarm System Control Module Set 3455306
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 406349
Mini Cooper One R50 R52 R53 iPod Interface Control Unit Module 0406349
Promo price
PLN 75.95
PLN 72.15
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. P1WA-7P238-GA
VW Amarok Mk2 Transfer Case Box Control Unit Module ECU ECU P1WA-7P238-GA
PLN 949.95
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 2Q0971537AB
VW Polo Mk6 Seat Ibiza Mk5 KJ1 Battery Negative Cable Earth Wiring 2Q0971537AB
PLN 94.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 7604347
BMW F20 F30 F31 F32 Bracket Holder Power Distribution Control Unit 7604347
Promo price
PLN 46.95
PLN 44.60
Delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. A2057200522
Mercedes GLC X253 Front Door Trim Cover Panel Strip Left N/S Black A2057200522
Promo price
PLN 237.95
PLN 166.57
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. A2469003615
Mercedes GLA X156 Tailgate Lift Boot Lid Control Unit Module A2469003615
Promo price
PLN 284.95
PLN 256.46
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8368231
BMW E46 Door Speaker Tweeter Front Left N/S 8368231
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9287756
Loudspeaker Centre BMW F25 F15 Central Woofer Audio Speaker 9287756
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
Part no. 9125237
CD Changer BMW X5 E70 X6 E71 Mini R55 R56 R57 6 Disc Changer Unit 9125237
PLN 75.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A6519007703
Mercedes W906 Glow Plug Relay Module Unit A6519007703
Promo price
PLN 189.95
PLN 180.45
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. A1669005811
Door Module Mercedes W176 W246 Front Right O/S Control Unit Module A1669005811
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 7543157-6
BMW Z4 E85 2.2i M54 170HP Engine Control Module Unit ECU Set 7543157 Manual
Promo price
PLN 949.95
PLN 664.97
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 9280186-1
BMW F10 F11 F30 F01 F02 LCI Air Control Module ECU Unit 9280186
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
Part no. 95504490277
Porsche Cayenne 955 Telematics Bluetooth Telephone Module Unit 95504490277
PLN 237.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8K0971104C
Audi A4 B8 Rear Bumper PDC Parking Sensor Wiring Harness Loom 8K0971104C
Promo price
PLN 42.95
PLN 40.80
Delivery - Tue, Dec 23
If paid before 14:00
Part no. 7P0937401
Volkswagen Touareg 7P Power Distribution Unit Positive Battery Socket 7P0937401
PLN 142.95
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 9342033-1
BMW F10 F20 F30 Head Unit Media Navigation Headunit Player 9342033
PLN 379.95
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. EXHAUST-FLAP-CONTROL
Audi A3 8V 1.6 TDI CLHA Drive Exhaust Flap Control Module Unit Actuator
Promo price
PLN 123.95
PLN 111.56
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 8321087-1
BMW E60 Front Seat Height Adjustment Electric Motor Actuator 0390203234 8321087
Promo price
PLN 37.95
PLN 36.05
Delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 8W0907468J
Audi A4 B9 Gateway Control Unit Module ECU 8W0907468J
Promo price
PLN 1,899.95
PLN 1,709.96
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 1K0959433BT
VW Golf 5 Body Control Comfort Unit Module BCM Convenience Unit ECU 1K0959433BT
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. A2129009916
Mercedes S212 Rear Tailgate Boot Trunk Lid Control Module Unit A2129009916
PLN 61.95
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 8W0971687BR
Audi A4 B9 Rear Right O/S Door Wiring Loom Harness 8W0971687BR
Promo price
PLN 189.95
PLN 170.96
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. 9293311
BMW F20 F21 F30 F31 Rear Body Control Unit Module REM 9329703
PLN 142.95
Free delivery - Tue, Dec 23
If paid before 14:00
-10%
Part no. 7624619
BMW F10 Cable Generator Alternator Starter Base B+ 7624619
Promo price
PLN 113.95
PLN 102.56
Free delivery - Tue, Dec 23
If paid before 14:00
-30%
Part no. 9199305
KaFAS Camera BMW F10 F11 Rear View Control Unit Module 9199305
Promo price
PLN 189.95
PLN 132.97
Free delivery - Tue, Dec 23
If paid before 14:00
Part no. A4539052600
Smart Fortwo C453 Aerial Antenna Rod Radio GPS Antenna Unit A4539052600
PLN 379.95
Free delivery - Tue, Dec 23
If paid before 14:00
-5%
Part no. 5Q0959435A
Volkswagen Golf CD1 Keyless Go Module ECU Entry Control Unit 5Q0959435A
Promo price
PLN 61.95
PLN 58.85
Free delivery - Tue, Dec 23
If paid before 14:00
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.
- Electronic control modules and controllers – They control and manage the operation of various vehicle systems, such as the engine, air conditioning and ABS.
- Alternators and generators – Responsible for generating electricity and charging the battery while the engine is running.
- Parts for alternators and generators – Including voltage regulators, brushes and bearings that ensure proper operation of the alternator.
- Starters – Key components of the starting system that enable the engine to be started.
- Starter parts – Including bendixes, rotors and solenoids necessary for the proper operation of the starter.
- Batteries – They store the electrical energy necessary to start the engine and power on-board systems.
- Wires, harnesses and connectors – They transmit energy and electrical signals between various vehicle systems.
- Fuses and fuse boxes – Protect the electrical system against overloads and short circuits.
- 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:
| Symptom | Possible cause | Item to check |
|---|---|---|
| Difficulty starting the engine | Worn out starter or battery | Starter motor, battery |
| Dimming the lights | Inefficient alternator | Alternator, voltage regulator |
| Electric windows not working | Damaged relays or harness | Relays, 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
- Measure the battery voltage with a multimeter – the resting value should be approximately 12.6 V.
- Check the charging voltage with the engine running – the correct range is 13.8–14.5 V.
- Assess the condition of the wires and terminals – lack of corrosion and a firm seat are essential.
- 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
| Question | Answer |
|---|---|
| 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 .