Replace Jeep Grand Cherokee Spark Plug price. Purchase Jeep Grand Cherokee Spark plug & Jeep Grand Cherokee Iridium And Platinum Plug. Maintaining the spark plugs of your Jeep Grand Cherokee is crucial for optimal engine performance and fuel efficiency. Regularly check for signs of wear, such as misfires, rough idling, or difficulty starting, which indicate it's time for a replacement to ensure your ride remains powerful and reliable. To extend their lifespan, ensure your engine is tuned correctly and use high-quality fuel. When selecting new spark plugs, choose from iridium, platinum, or copper options, considering that iridium and platinum offer superior longevity and performance. Always opt for plugs that meet OEM specifications for your Grand Cherokee for a seamless installation and peak engine function. Shop with us to find the perfect match for your vehicle, and take advantage of our easy-to-navigate catalog and competitive pricing to keep your Jeep running smoothly.