These 8-Pack DENSO 5339 Iridium Power Spark Plugs are the perfect choice for those looking to optimize their engine performance. With a super-hot spark, these spark plugs are designed to eliminate misfires and provide a smoother and more reliable drive. In addition to boosting performance, these spark plugs also help reduce exhaust emissions, making them a more eco-friendly option. Say goodbye to frustrating engine issues and hello to a more powerful and efficient ride with these high-quality spark plugs. Upgrade your vehicle's ignition system with the DENSO 5339 Iridium Power Spark Plugs for optimal engine performance.