Champion Iridium- Boxed - RS14WYPB5, 9404

Champion iridium- boxed - rs14wypb5champion iridium - the ultimate element. this spark plug's fine-wire iridium center and platinum ground electrodes provide the sharpest spark focus for maximum performance.heat-active alloy allows electrodes to reach optimal temperature quicklymaintains stable operating temperature under all engine loadsv-trimmed ground electrode promotes sharper spark focusfine-wire center electrode and v-trimmed for greater ignitabilityiridium center electrode delivers maximum lifechampion iridium - maximum performance. premium spark plugchampion iridium 9404 spark plug (carton of 4) application summary:buick lt. trk.: 3.4l v6 (05-02), 3.5l v6 (07-06); buick pass. car: 2.3l l4 (95-95), 2.4l l4 (98-96), 2.8l v6 (89-87), 3.0l v6 (88-85), 3.1l v6 (99-00), 3.3l v6 (93-89), 3.8l v6 (99-00), 5.7l v8 (96-94); buick van: 3.5l v6 (06-05); cadillac lt. trk.: 5.7l