Find Best Chrysler Imperial Combustion Plugs. Purchase Chrysler Imperial Ignition Plug Wires. Order Chrysler Imperial Spark Plugs & Chrysler Imperial Ignition Plug. Maintaining optimal performance in your Chrysler Imperial hinges on the health of your spark plugs, a vital component for engine efficiency and smooth starts. Keep an eye out for a rough idle, misfires, or hard starts as these are telltale signs that your spark plugs may require replacement. To extend their lifespan, ensure regular inspection and adhere to your vehicle's specific service interval. When selecting new spark plugs, choose between copper, platinum, or iridium options, each offering distinct longevity and performance benefits. Opt for high-quality materials to withstand extreme conditions, and for DIY enthusiasts, apply anti-seize on the threads during installation to prevent future seizing. Shop with us for an array of premium spark plugs tailored to fit your Imperial and drive with confidence.