These NGK Ignition Coils, also known as engine coils or spark plug coils, deliver the highest in durability and operational performance. Manufactured to OE standards, NGK Spark Plug Coils take power from the alternator and relay that power to the spark plugs. This ignites the fuel and makes your vehicle run. While ignition coils are built to last, over time, your current ignition coil may have begun to fail. With this in mind, if your vehicle exhibits bad ignition coil symptoms including backfiring, misfiring, stalling, or not starting in cold weather, consider NGK, the ...

   TRQ 6pc Ignition Coil Set of 6 Kit for Lexus GS300 GS350 GS450H IS250 IS350. Ignition Coil Features & Benefits. The ignition coil is a crucial part of your ignition system. It's function is to convert the 12 volt power of your vehicle's electrical system in to 35,000 or more volts. This produces a high intensity spark at the spark plug which then ignites the fuel in the cylinder. Coils in general will wear out over time and cause a misfire condition. In engines like this that use a coil, if the coil goes bad, the complete assembly needs to be replaced. Enough for one 6 ...