The ignition coil is an essential part of your vehicle's ignition system. Also known as a spark coil or induction coil, it transforms the battery's voltage into the thousands of volts required to produce an electrical spark in your spark plugs. That spark then ignites the air-and-fuel mixture inside your engine, leading to the combustion that powers your every drive.

All About Ignition Coils

An ignition coil is made of copper wiring that's coiled round an iron core. The coil features an open magnetic circuit that forms a closed loop around the wiring. That allows the ignition coil to take the voltage that’s drawn from the battery and direct it to the spark plugs in the cylinder head.

Unfortunately, even the best ignition coil can go bad. When that happens, you'll want to replace it as soon as possible in order to continue starting your vehicle reliably.

How to Spot Failing Ignition Coils

Signs of problems include:

Misfiring engines
Engine stalls
Uneven idling
Problems starting
Reduced engine power
Worsening fuel economy
Catalytic converter issues
Engine backfires
Increased exhaust emissions
Oil leaks
The "Check Engine" light comes on

Genuine OEM Ignition Coils Perform Best

Your vehicle's manufacturer makes the only ignition coils that are guaranteed to work with your model and its ignition system. Our online auto parts center has everything you need for your project, offering the peace of mind and shopping experience you want. Buy today to save both time and money!