Spark plugs create the spark that ignites the fuel and air mixture in your engine’s cylinders. Essentially, they’re the starting gun for the whole combustion process. They have a few key parts: the ceramic insulator, the metal shell, the center electrode, and the ground electrode. All of this works together to make a really hot spark at just the right moment. Think of your engine as a series of little explosions happening over and over. The spark plug is what starts each of those explosions. It’s a pretty critical part of the whole process—without a good spark, nothing happens. It's responsible for turning chemical energy from the fuel into the mechanical energy that moves your vehicle. They’re located right in the engine cylinders, so they're exposed to a lot of heat and pressure. A bad spark plug can cause a lot of problems. You’ll notice if one is failing through things like a rough idle, misfires—that’s when the engine kind of stumbles—reduced gas mileage, and a loss of power. Sometimes you'll even feel it as a hesitation when you step on the gas. They slowly wear out over time, the gap between the electrodes widens, and it takes more and more voltage to create a good spark. Think of it like trying to jump a gap – the wider the gap, the harder it is to clear. Replacing them regularly keeps everything running smoothly. You can find a good selection of spark plugs at places like Fixparts Online, and they're usually a pretty straightforward DIY job if you're comfortable working on cars. If not, a mechanic can swap them out quickly. Your satisfaction is our priority: Spark Plug (MPN 7L0820992A) is covered for 12 months!

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• Audi parts are made specifically for your vehicle, ensuring a perfect fit and optimal performance. • Using genuine Audi parts helps maintain your vehicle's value and original quality. • Audi parts are rigorously tested to meet high safety and durability standards, giving you peace of mind. • You’ll get reliable performance and keep your Audi running like new with parts designed by the original manufacturer. Audi delivers excellence, FixParts Online delivers to your door.