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Car electrics parts

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Electric system auto parts for all top car brands

Automotive electric system parts for top car models

Electrics for your car: find out more! Which ones to choose, when to change them, and how much they cost

Car electrical parts are a set of units which store and produce electricity and also consume it to perform various tasks. Most systems in a modern vehicle have devices powered by electricity.

Design of a car electrical system

The key components of car electrics are:

  • Battery – this is an electrochemical device which can receive, accumulate and release a charge. It supplies power to the starter. It also serves as the auxiliary power source for the vehicle mains when the engine isn’t running.
  • Starter motor – this is a direct current motor which converts electrical energy into mechanical. It is used for initial engine cranking. It switches off as soon as the internal combustion engine starts running under its own power.
  • Alternator – this converts the mechanical energy of the rotating crankshaft into electrical. This device powers all electrical consumers when the engine is running and charges the battery as well.
  • Ignition switch – with this, the driver initiates the power supply to the ignition system, starter motor, fuel pump, instrument panel, and other equipment.
  • Wiring – this transfers electricity from one device to another.
  • Relays – these are switching units which open and close the electrical circuits they are connected to.
  • Fuses – these are devices designed to protect various car electrical parts from voltage spikes. When allowable values are exceeded, the fuses blow and open the circuits.
  • Other energy-consuming devices – these include lights, electric window regulators, windscreen wipers, heated seats, various sensors, and other devices powered by electricity.

Maintenance advice

  • Keep your engine compartment clean. Dirt and moisture have a detrimental effect on electrical contacts.
  • You should always make sure that all connectors are secure. Poor contact may melt or burn the connectors.
  • During any car repairs, be sure to disconnect the negative battery terminal. At the same time, if needed, you can remove oxidation and dirt from contacts and terminals.
  • Avoid over-discharging your battery. This may lead to battery cell sulfation.
  • When you install a new fuse, always make sure that it corresponds to the vehicle specifications, or else the whole circuit may get burnt.
  • Don’t crank the engine with the starter for too long. You should take a break after several unsuccessful attempts.
  • Replace the alternator drive belt in due time. Always make sure that it is properly tensioned.

Symptoms of malfunction

Malfunctions in car electrics often result in problems starting the engine. They might be caused by poor contact in the ignition switch or battery terminals, or faulty starter components. In some cases, the engine won’t start at all. Sometimes, the battery doesn’t charge properly during driving or, conversely, gets overcharged. These are symptoms of a failing alternator voltage regulator. Poor spark plug performance, headlight dimming while driving or the audio system switching off on its own indicate a faulty diode bridge. In some cases, the starter won’t stop working even when the engine is running. This symptom indicates a bad starter solenoid or overrunning clutch. If wires or connectors melt due to a bad contact, you may smell burning inside the car.

Causes of malfunction

Many malfunctions of electrics in a vehicle are caused by natural wear and tear of particular assemblies. For example, alternator brushes wear out over time and have to be replaced, as does the drive belt. Sometimes device malfunctions are connected with the misuse or neglect of certain assemblies. For example, constant exposure to freezing cold will deteriorate your battery very quickly. You also shouldn’t overload the starter.

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Replacement of Electric system car parts: Video repair guide

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Top 15 of best sellers from the car parts electrics

Recommended spare parts from the Electrics section. These are the sales hits. Buy our best sellling items or discover a vast selection of other attractive offers.

-40%
Headlight HELLA 1LX 011 929-441 car Electric system parts olnine
Reviews - 1
Parts Details
  • Left-hand / Right-hand Traffic: for left-hand traffic
  • Lamp Type: LED
  • Light Function: with low beam (LED), with high beam (LED), with position light (LED), with indicator (LED), with daytime running light (LED)
  • Supplementary Article / Supplementary Info: without LED control unit for daytime running- / position ligh, without LED control unit for low beam / high beam, without LED control unit for indicators
  • Fitting Position: Right
  • Supplementary Article / Supplementary Info Info 2: with motor for headlamp levelling
  • Light Design: LED
  • Number of light functions: 5
  • Check OE number
  • paired article number: 1LX 011 929-431
  • with lettering: HELLA Advanced LED
  • without lettering: BMW LED
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Headlight
  • Item number: 1LX 011 929-441
  • Our price: £ 647,46
  • Condition: New
Details
HELLA E1 4017 Headlight Right, LED, LED, for left-hand traffic
Article number: 1LX 011 929-441
compared to RRP £ 1093,33

£ 647,46
price incl. 20% VAT, free delivery
-43%
Headlight ABAKUS 444-1175LMLDEM2 car Electrics parts olnine
Reviews - 15
Parts Details
  • Lamp Type: H7 / H7, PY21W, LED
  • Supplementary Article / Supplementary Info: without bulb holder, without bulb
  • Fitting Position: Left
  • Supplementary Article / Supplementary Info Info 2: with motor for headlamp levelling
  • Registration Type: ECE approved
  • Operating Mode: Electric
  • Socket Type bulb: PX26d, BAU15s
  • paired article number: 444-1175RMLDEM2
  • Assy. / disassy. by qualified personnel required!
  • ABAKUS: Headlight
  • Item number: 444-1175LMLDEM2
  • Our price: £ 171,67
  • Condition: New
Details
ABAKUS 444-1175LMLDEM2 Headlight Left, H7/H7, PY21W, LED, PX26d, BAU15s
Article number: 444-1175LMLDEM2
compared to RRP £ 304,83

£ 171,67
price incl. 20% VAT, free delivery
Headlight TYC 20-12033-05-2 car Electric system parts olnine
Reviews - 8
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Lamp Type: H4
  • Supplementary Article / Supplementary Info: without electric motor
  • Fitting Position: Right
  • Vehicle Equipment: for vehicles with headlight levelling (electric)
  • Registration Type: ECE approved
  • Version: V-System
  • TYC: Headlight
  • Item number: 20-12033-05-2
  • Our price: £ 92,68
  • Condition: New
Details
TYC 20-12033-05-2 Headlight Right, H4, for right-hand traffic
Article number: 20-12033-05-2
£ 92,68
price incl. 20% VAT, excl. delivery costs
-46%
Air Horn HELLA 3AM 922 000-971 car Electrics parts olnine
Reviews - 20
Parts Details
  • Voltage [V]: 12
  • Power Consumption [W]: 42
  • Sound Level [dB(A)]: 111
  • Frequency Range [Hz]: 350, 415
  • Power consumption [A]: 3,5
  • Protection Type (IP Code): IP65
  • fulfils ECE norm: R28
  • Registration Type: ECE approved
  • Signal: High Tone, Low Tone
  • Housing Colour: red / black
  • Quantity: 2
  • Operating Mode: Electric
  • Diameter [mm]: 90
  • Temperature range from [°C]: -40
  • Temperature range to [°C]: +90
  • Mounting Type: Flat Plug-in Connector
  • Supplementary Article / Supplementary Info Info 2: with E quality seal
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Air Horn
  • Item number: 3AM 922 000-971
  • Our price: £ 11,37
  • Condition: New
Details
HELLA S90 Air Horn
Article number: 3AM 922 000-971
compared to RRP £ 21,23

£ 11,37
price incl. 20% VAT, excl. delivery costs
-38%
Headlight HELLA 1EX 010 818-351 auto Electric system parts cost
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Lamp Type: LED, D1S / H7, D1S, H7
  • Light Function: with cornering light, with indicator (LED), with position light, with daytime running light (LED), with high beam, with low beam
  • Supplementary Article / Supplementary Info: without bulb, without LED control unit for indicators, without LED control unit for daytime running- / position ligh
  • Fitting Position: Left
  • Supplementary Article / Supplementary Info Info 2: without ballast, with motor for headlamp levelling, with glow discharge lamp
  • Vehicle Equipment: for vehicles with Xenon light
  • Light Design: LED, Bi-Xenon
  • Registration Type: ECE approved
  • Number of light functions: 6
  • Country Specific Design: Europe
  • Voltage [V]: 12
  • Check OE number
  • paired article number: 1EX 010 818-361
  • without lettering: Mercedes-Benz, BiXenon
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Headlight
  • Item number: 1EX 010 818-351
  • Our price: £ 492,89
  • Condition: New
Details
HELLA E1 3255 Headlight Left, LED, D1S/H7, D1S, H7, LED, Bi-Xenon, 12V, for right-hand traffic
Article number: 1EX 010 818-351
compared to RRP £ 804,85

£ 492,89
price incl. 20% VAT, free delivery
Headlight TYC 20-0318-25-2 auto Electrics parts cost
Reviews - 5
Parts Details
  • Lamp Type: H7 / H7
  • Supplementary Article / Supplementary Info: with bulb holder, with electric motor
  • Fitting Position: Left
  • Vehicle Equipment: for vehicles with headlight levelling (electric)
  • Registration Type: ECE approved
  • Housing Colour: chrome
  • TYC: Headlight
  • Item number: 20-0318-25-2
  • Our price: £ 126,65
  • Condition: New
Details
TYC 20-0318-25-2 Headlight Left, H7/H7
Article number: 20-0318-25-2
£ 126,65
price incl. 20% VAT, excl. delivery costs
-39%
Headlight set HELLA 1EL 247 014-831 auto Electric system parts cost
Reviews - 4
Parts Details
  • Quantity Unit: Kit
  • Indicator Colour: white
  • Supplementary Article / Supplementary Info Info 2: with bulbs, with motor for headlamp levelling
  • Lens Colour: Crystal clear
  • Optical Impression: black
  • Number of light functions: 3
  • Voltage [V]: 12
  • Fitting Position: Left, Right
  • Lamp Type: H7 / H7, W5W
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Light Design: DE, Halogen
  • Registration Type: ECE approved
  • Light Function: with low beam, with high beam, with position light, without indicator
  • Reference number: 25
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Headlight set
  • Item number: 1EL 247 014-831
  • Our price: £ 359,40
  • Condition: New
Details
HELLA E4 10224 Headlight set with bulbs, with motor for headlamp levelling
Article number: 1EL 247 014-831
compared to RRP £ 596,60

£ 359,40
price incl. 20% VAT, free delivery
Rear light VALEO 043893 auto Electrics parts cost
Reviews - 21
Parts Details
  • Light Function: with reverse light
  • Supplementary Article / Supplementary Info: with bulb holder
  • Light Design: LED
  • Supplementary Info: ORIGINAL PART
  • Fitting Position: Right
  • Supplementary Article / Supplementary Info Info 2: with bulbs
  • Weight [kg]: 4,17
  • paired article number: 043892
  • VALEO: Rear light
  • Item number: 043893
  • Our price: £ 136,67
  • Condition: New
Details
VALEO 43893 Rear light ORIGINAL PART, Right, with bulbs, with bulb holder
Article number: 043893
£ 136,67
price incl. 20% VAT, free delivery
Lambda sensor BOSCH 0 258 010 422 vehicle Electric system parts cost
Reviews - 13
Parts Details
  • Overall Length [mm]: 480
  • Number of circuits: 4
  • Recommended change interval [km]: 250000
  • BOSCH: Lambda sensor
  • Item number: 0 258 010 422
  • Our price: £ 66,20
  • Condition: New
Details
BOSCH LS 10422 Lambda sensor 4
Article number: 0 258 010 422
£ 66,20
price incl. 20% VAT, excl. delivery costs
-34%
Headlight HELLA 1EG 011 919-411 vehicle Electrics parts cost
Reviews - 1
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Lamp Type: H7 / H7, PY21W
  • Light Function: with daytime running light (LED), with high beam, with indicator, with position light, with low beam
  • Fitting Position: Left
  • Supplementary Article / Supplementary Info Info 2: with motor for headlamp levelling, with bulbs
  • Light Design: Halogen
  • Number of light functions: 5
  • Voltage [V]: 12
  • Check OE number
  • paired article number: 1EG 011 919-421
  • with lettering: HELLA
  • without lettering: BMW
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Headlight
  • Item number: 1EG 011 919-411
  • Our price: £ 304,68
  • Condition: New
Details
HELLA E1 3999 Headlight Left, H7/H7, PY21W, Halogen, 12V, for right-hand traffic
Article number: 1EG 011 919-411
compared to RRP £ 467,65

£ 304,68
price incl. 20% VAT, free delivery
Alternator LUCAS LRB00436 vehicle Electric system parts cost
Reviews - 2
Parts Details
  • Alternator Charging Current [A]: 70
  • Voltage [V]: 14
  • Pulleys: with multi-belt pulley
  • Belt Pulley Ø [mm]: 55
  • Number of ribs: 6
  • Plug Type ID: 0230
  • Vehicle Main Current: for vehicles with 12V main current
  • Clamp: M8 B+, M5 D+
  • Bore Diameter 1 [mm]: 10
  • Thickness 1 [mm]: 22
  • Net weight [kg]: 4,7
  • LUCAS: Alternator
  • Item number: LRB00436
  • Our price: £ 73,21
  • Condition: Remanufactured
Details
LUCAS LRB00436 Alternator 14V, 70A, M8 B+, M5 D+, 0230, Ø 55 mm
Article number: LRB00436
£ 73,21
price incl. 20% VAT, excl. delivery costs
Combination Rearlight Set VALEO 043722 vehicle Electrics parts cost
Reviews - 24
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Fitting Position: Left, Right
  • Supplementary Article / Supplementary Info: with bulb holder
  • Light Function: with rear fog light, with reverse light
  • Supplementary Article / Supplementary Info Info 2: with bulbs
  • Light Design: LED
  • Weight [kg]: 5,22
  • Supplementary Info: CIBIE
  • VALEO: Combination Rearlight Set
  • Item number: 043722
  • Our price: £ 334,59
  • Condition: New
Details
VALEO 43722 Combination Rearlight Set with bulb holder, with bulbs, CIBIE
Article number: 043722
£ 334,59
Price per set of 2 pieces
price incl. 20% VAT, free delivery
Lamp Base, tail light FAST FT86581 vehicle Electric system parts cost
Reviews - 7
Parts Details
  • paired article number: FT86582
  • Fitting Position: Left
  • FAST: Lamp Base, tail light
  • Item number: FT86581
  • Condition: New
Details
FAST FT86581 Lamp Base, tail light Left
Article number: FT86581
£ 11,47
price incl. 20% VAT, excl. delivery costs
-38%
Headlight HELLA 1EL 010 740-571 vehicle Electrics parts cost
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Lamp Type: D3S, PSY24W
  • Light Function: with position light, with indicator, with daytime running light (LED), with low beam, with high beam
  • Supplementary Article / Supplementary Info: without LED control unit for low beam / high beam, without LED control unit for daytime running- / position ligh
  • Fitting Position: Left
  • Supplementary Article / Supplementary Info Info 2: without ballast, without glow discharge lamp, with motor for headlamp levelling
  • Vehicle Equipment: for vehicles without dynamic bending light, for vehicles with Xenon light
  • Light Design: with hybrid technology
  • Registration Type: ECE approved, CCC approved
  • Number of light functions: 5
  • Country Specific Design: Europe, China
  • Voltage [V]: 12
  • Check OE number
  • for combined PR number: K8G,K8R+AV1
  • Suitable for vehicle type: Coupé, Hatchback
  • paired article number: 1EL 010 740-581
  • Assy. / disassy. by qualified personnel required!
  • HELLA: Headlight
  • Item number: 1EL 010 740-571
  • Our price: £ 410,97
  • Condition: New
Details
HELLA E1 3276 Headlight Left, D3S, PSY24W, with hybrid technology, 12V, for right-hand traffic
Article number: 1EL 010 740-571
compared to RRP £ 667,40

£ 410,97
price incl. 20% VAT, free delivery
Headlight TYC 20-14374-15-2 vehicle Electric system parts cost
Reviews - 3
Parts Details
  • Left-hand / Right-hand Traffic: for right-hand traffic
  • Lamp Type: H7 / H7
  • Supplementary Article / Supplementary Info: without electric motor
  • Fitting Position: Left
  • Vehicle Equipment: for vehicles with headlight levelling (electric)
  • Registration Type: ECE approved
  • Housing Colour: chrome
  • TYC: Headlight
  • Item number: 20-14374-15-2
  • Our price: £ 118,57
  • Condition: New
Details
TYC 20-14374-15-2 Headlight Left, H7/H7, for right-hand traffic
Article number: 20-14374-15-2
£ 118,57
price incl. 20% VAT, excl. delivery costs

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