OEM & aftermarket ignition coil from top brands — compare prices, check fitment, order with free delivery
Shop 7858 ignition coil from 24 trusted brands including BREMI, BorgWarner (BERU), HELLA. Compare prices, check vehicle compatibility, and get free delivery on orders over £99.
Ignition coils step up the battery's 12 volts to the 20,000-40,000 volts needed to create a spark at the spark plug. Modern engines use coil-on-plug (COP) designs with one coil per cylinder for precise ignition timing. A faulty coil causes misfires, rough running, increased emissions, and a check engine light. Diagnosing the faulty coil is straightforward with an OBD scanner.
Ignition coil failure typically affects one cylinder at a time. The engine management system detects the misfire and stores a diagnostic trouble code.
Coil-on-plug designs make diagnosis easy: swap the suspected coil with an adjacent cylinder's coil. If the misfire follows the coil, that's your faulty unit.
Commonly searched OE numbers fitting Ignition Coil from the TecDoc catalogue.
Common original equipment numbers linked to stocked alternatives.