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Champion RC89WYPB4 / OE182/T10 IRIDIUM Spark Plug Replaces 90919-01210Champion®pioneered the use of iridium in aviation and industrial applications nearly 30 years ago. Now iridium, which has a stabilizing effect on ignition voltage and excellent wear characteristics, is quickly becoming the technology of choice for engine manufacturers worldwide. Iridium pin welded to the copper core centre electrode Platinum pad welded to the copper core ground Champion®Iridium center electrode and “laser-locked” platinum ground electrodes ensure maximum life Champion®’s fine-wire electrode and platinum v-trimmed ground electrode produce the sharpest spark focus Further reduces erosion maintaining the gap & increases lifeIf you are unsure as to whether this is the correct part for your vehicle, please don't hesitate to contact us. Alternatively please use the cross reference table above.