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How does an ignition coil work?


The ignition coil supplies the spark plug with high voltage so that it can provide the spark for fuel combustion. For this purpose, 12V strong current flows from the battery into the primary winding, creating a magnetic field. If this is interrupted, the magnetic field collapses abruptly and generates the required high voltage of over 15,000 volts in the secondary winding, which is passed on to the spark plug. In the past, ignition cables and ignition distributors were still required for transmission, but nowadays the ignition coils are plugged directly onto the spark plugs. In many vehicles, the ignition coils are plugged into the spark plugs individually, and in 3 to 4 cylinders, so-called ignition modules are used. These include the ignition coils for all existing spark plugs in one component. In the lower part of the page we go into why ignition coils go defective and how to recognize it. Likewise, you will find tips on how to quickly and easily find the right ignition coil to buy from us.

How can an ignition coil go defective and what symptoms indicate a defect?
What to consider when buying an ignition coil?

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6x BREMI Zündspule + Kerzenstecker BMW 3er E36 E46 5er E39 7er E38 Z3 M50 M52 M54 S50 S52

entspricht BMW OE-Nummer: 12 13 1 748 017

Item No.: PKT162W147
Manufacturer: BREMI
part number: 11860T
EAN-Code: 4017534075561
Delivery:

  • 6x Ignition Coil Piece - BREMI 11860T
129,94 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

NGK 48041 U5014 Zündspule AUDI A4 A5 A6 A7 A8 Q5 Q7 R8 VW Touareg 06E905115E

auch PORSCHE CAYENNE (92A) PANAMERA (970) 3.0 S E-Hybrid & LAMBORGHINI GALLADO

Item No.: A18514W212
Manufacturer: NGK
part number: 48041
EAN-Code: 4010326480413
Baugruppe: Zündanlage
Mengeneinheit: Stück
Pol_Anzahl: 4
Zuendspule: Anschlussausführung SAE
Anzahl_D_Ein_Ausgaenge: 1
27,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

6x DELPHI GN10571-12B1 Zündspule für BMW 6 Zylinder BENZINER 12138616153

Item No.: PKT472W610
Manufacturer: DELPHI
part number: GN10571-12B1
EAN-Code: 5012759497753
Delivery:

  • 6x Ignition Coil Piece - DELPHI GN10571-12B1
115,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

BREMI 20497 Zündspule OPEL Adam Astra J Corsa D E Insignia A Mokka Zafira C 1.2 1.4

auch für CHEVROLET AVEO CRUZE ORLANDO TRAX VOLT

Item No.: A16514W212
Manufacturer: BREMI
part number: 20497
EAN-Code: 4017534185611
Baugruppe: Zündanlage
Spannung_v: 12
Mengeneinheit: Stück
70,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

BREMI 20193 Zündspule OPEL Astra G H Meriva A Signum Vectra B C Zafira A 1.8 16V

auch für OPEL TIGRA B 1.8 & SAAB 9-3 (YS3F) 1.8i

Item No.: A16514W210
Manufacturer: BREMI
part number: 20193
EAN-Code: 4017534177227
Baugruppe: Zündanlage
Spannung_v: 12
Mengeneinheit: Stück
48,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

4x BREMI 20125 Zündspule AUDI A4 (8E B6) A6 (4B C5) 2.0 130 PS 06C905115M

Item No.: PKT462W485
Manufacturer: BREMI
part number: 20125
Delivery:

  • 4x Ignition Coil Piece - BREMI 20125
91,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

4x BOSCH 0221504470 Zündspule PSA Berlingo C3 C4 C5 207 308 508 Partner 1.4 1.6

auch für MINI R56 R57 R55 R60 R58 R61 R59 One / Cooper / Works

Item No.: PKT462W495
Manufacturer: BOSCH
part number: 0 221 504 470
EAN-Code: 4047024492356
Delivery:

  • 4x Ignition Coil Piece - BOSCH 0 221 504 470
84,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

4x BERU ZS077 Zündspule MERCEDES W203 W204 C209 W211 W212 R171 R172 Sprinter M271

BERU: ZS077 / 0040100077 | Mercedes: 000 150 25 80

Item No.: PKT462W489
Manufacturer: BERU
part number: ZS077
Delivery:

  • 4x Ignition Coil Piece - BorgWarner (BERU) ZS077
95,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

BREMI 20114 Zündspule AUDI A4 A5 A6 A8 Q5 Q7 R8 VW Touareg 06E905115E

Item No.: A18514W224
Manufacturer: BREMI
part number: 20114
EAN-Code: 4017534174752
Baugruppe: Zündanlage
Spannung_v: 12
Mengeneinheit: Stück
26,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

DELPHI Zündspule OPEL Agila Astra G H Combo Corsa C D Meriva A Tigra B 1.2 1.4

DELPHI: GN10207-12B1 | OPEL: 1208020 / 93177212

Item No.: A16514W247
Manufacturer: DELPHI
part number: GN10207-12B1
EAN-Code: 5012759457603
Baugruppe: Zündanlage
64375936: 6
Spannung_v: 12
Mengeneinheit: Stück
73,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

BOSCH 0221503035 Zündspule MERCEDES M266 M112 M113 M155 M273 0001587803

Item No.: A12514W217
Manufacturer: BOSCH
part number: 0 221 503 035
EAN-Code: 3165143094679
Baugruppe: Zündanlage
Mengeneinheit: Stück
Nennspannung_v: 14
38,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart

DELPHI CE10000-12B1 Zündmodul OPEL Astra G Corsa C Vectra B C Zafira A 1.4 1.6 19005212

Item No.: A16514W211
Manufacturer: DELPHI
part number: CE10000-12B1
EAN-Code: 5012759174104
Baugruppe: Zündanlage
64375936: 6
Spannung_v: 12
Mengeneinheit: Stück
64,95 EUR

incl. VAT, excl. shipping costs

available / 1-2 working days
add to cart
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How can an ignition coil go defective and what symptoms indicate a defect?

The main stresses on an ignition coil are excessive heat and vibration. If the stresses are too high, internal short circuits can occur. Likewise, leaking oil affects the insulations, which can leak through broken oil seals. Also, during engine washes, care should be taken not to hit the ignition coils directly with the high-pressure cleaner, as this can allow water to enter and cause a short circuit. This would cause an ignition coil to become defective. Last but not least, a low voltage supply, for example due to a weak battery, can also lead to faster wear.

In more modern vehicles, a defective ignition coil usually results in a stuttering engine and misfires, since the other ignition coils are still working. In older vehicles, the engine will not start at all if the ignition coil is defective. In both cases, the engine light will come on. Then you should immediately stop the car and call the breakdown service. This is the only way to ensure that no unburned gasoline gets into the catalytic converter, which would destroy it. If an ignition coil within an ignition module is damaged, the entire ignition module must be replaced, otherwise only the individually affected ignition coil is replaced. The replacement should be carried out by experienced personnel, as contact with live components can cause injury. Likewise, the spark plugs must not be damaged when changing the ignition coils and appropriate diagnostic equipment is required.

What to consider when buying an ignition coil?

Who wants to buy an ignition coil, must first clarify whether it is an ignition module or individual ignition coils. Since both variants differ in each case in their form and connections per vehicle, it is recommended to select the vehicle first, so that only suitable offers are still displayed. All offers shown are made of high quality materials, which makes them better and longer withstand the high loads. This slows down the wear and tear and the ignition coils as well as the ignition modules do not have to be replaced so quickly again.

For our range, we rely on the following well-known brand manufacturers to ensure the high quality of parts:

If you are unsure which ignition coil or ignition module to buy, you are welcome to contact our customer service with the 17-digit chassis number. He will be happy to help you with the selection.