Browse Jeep Cherokee Ignition Plug. Purchase Jeep Cherokee Spark Plugs. Locate Jeep Cherokee Ignition Plug Wires & Jeep Cherokee Ignition Plugs Replacement. Maintaining the spark plugs in your Jeep Cherokee is crucial for optimal performance and fuel efficiency. Regularly checking for signs of wear, such as difficulty starting, engine misfires, or poor acceleration, can alert you to the need for replacement. Extend their lifespan by ensuring your engine is tuned and using high-quality fuel. When selecting new spark plugs, consider options like copper for better conductivity or iridium and platinum for longevity. Always opt for OEM-recommended products to guarantee a precise fit and function. Proper installation is key, so apply anti-seize to the threads and use a torque wrench for the perfect snugness to avoid engine misfires, ensuring a smooth ride every time.