Denso Iridium Spark PlugsPrice $60 for 4 pieces. Cash and carry.IK16IK20IK20LIK22IK24IKH16IKH20Price $70 for 4 pieces. Cash and carry.IXUH22IXU22IT20Q. What makes Iridium better? A. Until recently, platinum was considered the best material to use on the top of an electrode because of its durability. However, Iridium is 6 times harder,...
