Denso (5317) IW27 Iridium Power Spark Plug, (Pack of 1) 0.4 mm iridium center electrode: world's smallest diameter that maximizes firing potential U-groove and taper cut ground electrode: provides faster spark flame growth and lessens heat quenching DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode DENSO patented 360 degree laser welding process: ensuring exceptional quality bond and structural strength with the iridium center electrode <a href="https://www.amazon.com/b?node=14770868011"> International products </a> have <a href="https://www.amazon.com/gp/help/customer/display.html/ref=nav_cs_help?ie=UTF8&nodeId=202045290"> separate terms, </a> are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. Manufacturer warranty may not apply <a href="https://www.amazon.com/b?node=14770868011">Learn more</a> about Amazon Global Store.