The Spark Plug (#90080-91180), an essential Engine-Fuel component in the system, plays a pivotal role in igniting the air-fuel mixture within the engine's combustion chamber. As voltage is applied, a spark jumps the gap at the plug's tip, setting off the combustion process. Genuine parts like these ensure optimal compatibility with your vehicle. An old or non-functional spark plug may cause misfires, reduced fuel efficiency, or even engine damage. Thus, periodic replacement of spark plugs is a must. Genuine parts also come with a 1 year parts warranty. A properly functioning spark plug contributes to the engine's optimum performance and fuel efficiency, thereby enhancing the overall safety and reliability of your vehicle.