CR7HSA spark plug, NHSP LD SPARK PLUG, IRIDIUM, A7T SPARK PLUG, SPARK PLUG IRRIDIUM RACING VERSION, GY6 CA7GH, Performance spark plug gy6, OEM spark plug, racing spark plug gy6, ngk spark gy6, High-Performance Spark Plug For GY6 For use in the following Scooters , ATV's Quads Buggies and many other GY6 engine machines These use an IRIDIUM precious metal electrode. Iridium is an extremely dense metal and can produce an excellent spark at lower voltages. It can withstand higher temperatures, burns fuel more efficiently, Increasing power and improving fuel consumption. ALL CHINESE GY6 Engine Quads, ATVs and Buggies from 50- 150cc