Champion Iridium- Boxed - QC10WEP, 9005

P champion iridium- boxed - qc10wep /pp champion iridium - the ultimate element. this spark plug's fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance./p heat-active alloy allows electrodes to reach optimal temperature quickly maintains stable operating temperature under all engine loads v-trimmed ground electrode promotes sharper spark focus fine-wire center electrode and v-trimmed for greater ignitability iridium center electrode delivers maximum life champion iridium - maximum performance. premium spark plug champion iridium 9005 spark plug (carton of 4)p application summary marine/p.