Autowxjq Iridium Spark Plugs are engineered to deliver both high performance and long life, The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the Iridium center electrode and Iridum tipped ground electrode help it to go the ...Autowxjq Iridium Spark Plugs are engineered to deliver both high performance and long life, The ultra-fine wire design and laser welded tapered ground electrode deliver optimum performance, while the Iridium center electrode and Iridum tipped ground electrode help it to go the distance. Autowxjq Iridium Spark Plugs are pre-gapped at the factory , for simple, easy installation right out of the box. Unlock the performance in your engine with Autowxjq Iridium Spark Plugs