4 pc NGK 94201 Spark Plug (SILZKGR8B8S) ENHANCE PERFORMANCE:The NGK Laser Iridium Spark Plug, the highest performance spark plug available, delivers the ultimate in both engine performance and longevity. Featuring a precision laser-welded fine-wire iridium alloy center-electrode tip and a platinum ground electrode for maximum engine horsepower and torque, the NGK Laser Iridium Spark Plug is designed specifically for the performance enthusiast looking for a long-lasting plug, built to last 80,000 to 100,000 miles DELIVER OUTSTANDING ACCELERATION:The iridium center electrode delivers maximum spark energy to achieve higher ignitability and improved acceleration in comparison with normal plugs. High-grade alumina silicate ceramic creates a stronger insulator which reduces the risk of dielectric punch-through caused by a spark exiting through the side of the plug. Trust in NGK, the number 1 spark plug supplier, to provide Laser Iridium Spark Plugs that showcase the best in durable performance and fitment RELY ON QUALITY IGNITION COMPONENTS: From their start in 1936 through today, the NGK product line is proof of their dedication to innovation, performance, and quality. In order to deliver high-quality spark plugs and oxygen sensors to the automotive community, NGK has partnered with auto manufacturers to engineer automotive parts that fit both the vehicles of today and of the future TRUST IN NGK NTK: Explore components built by the world leader in the design of spark plugs and oxygen sensors. Their attention to performance excellence is what has differentiated them from the competition and allowed them to be the number one supplier of spark plugs and oxygen sensors Please note, these spark plugs are pre-gapped for general use, however, you will need to adjust this gap to fit the needs of your specific application.