Browse Kia Spark plug replacement & Kia Iridium platinum spark plugs. Purchase Kia Glow heater plug. Order Kia Spark plugs iridium. Maintaining optimal performance in your Kia begins with the heart of combustion ? the spark plugs. Regular inspection and cleaning can extend their lifespan, but be alert for signs of wear, such as rough idling or difficulty starting, which signal a need for replacement. When selecting new spark plugs, choose from iridium, platinum, or copper options, each offering unique benefits like longevity and improved conductivity. For installation, ensure each spark plug is properly gapped to your Kia's specifications, promoting peak efficiency and fuel economy. Premium materials and correct installation are key to unlocking your Kia's full potential, so invest in quality spark plugs to keep your engine firing smoothly and reliably.