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<h2><span style="font-size: 18px;">What does a spark plug do?</span></h2>
<p><span style="font-size: 14px;">A spark plug is like the ignition spark that gets your engine firing on all cylinders&mdash;literally. It&rsquo;s a small but vital part that plays a huge role in the engine&rsquo;s performance. When you start your car, the spark plug generates a spark that ignites the fuel and air mixture inside the engine&rsquo;s cylinders. This controlled explosion powers the engine&rsquo;s pistons, which then turn the crankshaft and keep the vehicle moving. Without the spark plug, the engine would fail to combust the fuel, and your car simply wouldn&rsquo;t start.</span></p>
<p><span style="font-size: 14px;">Not only does the spark plug create this spark, but it also helps keep the combustion process efficient. A properly working spark plug ensures smooth engine performance, better fuel efficiency, and lower emissions. Over time, spark plugs wear out and can affect everything from acceleration to engine misfires. So, while it&rsquo;s a small part, its job is crucial for your vehicle to run properly and efficiently.</span></p>
<h2><span style="font-size: 18px;">Symptoms of a bad spark plug</span></h2>
<p><span style="font-size: 14px;">Bad spark plugs can cause several noticeable symptoms in your vehicle. You might experience engine misfires, where the engine runs unevenly, jerks, or stalls. Poor acceleration is another sign, with your car feeling sluggish or slow to respond when you press the gas pedal. A rough idle, where the engine shakes or vibrates at a stop, is also common. If you notice your car is using more gas than usual, it could be due to decreased fuel efficiency caused by faulty spark plugs. Hard starting, where the engine takes longer to crank, and the Check Engine light coming on are also indicators. Lastly, you may see increased exhaust emissions, with a strong gasoline smell or black smoke coming from the tailpipe. If you notice any of these, it&rsquo;s a good idea to check and replace your spark plugs.</span></p>
<h2><span style="font-size: 18px;">Get the best spark plugs here at A-Premium</span></h2>
<p><span style="font-size: 14px;">Say goodbye to rough idling, engine misfires, or starting issues with the new spark plugs from A-Premium. Our spark plugs are compatible with virtually all makes and models across a wide range of heat ratings. Shop online now and enjoy free shipping and fast delivery.</span></p>
<p><span style="font-size: 14px;">At A-Premium, we make it simple to find the perfect parts for your vehicle. If you're asking, &ldquo;Which spark plugs do I need?&rdquo; just enter your car&rsquo;s year, make, model, and engine details at the top of this page, and we'll help you choose the right spark plugs. For example, if you need spark plugs for your Honda Civic, just enter its information, and we&rsquo;ll recommend the perfect fit.&nbsp;Shop now!</span></p>

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4 Pcs Iridium & Platinum Spark Plugs for 1989-1991 Peugeot 405

4 Pcs Iridium & Platinum Spark Plugs

A-Premium provides top-grade Spark Plug for your Peugeot vehicle at competitive prices. Designed to match OE standards and ensure long-lasting performance. Fast shipping and free returns available.

Buy Peugeot Spark Plug | A-Premium