Bosch Super Copper Core Plugs
Heavy-duty copper core center electrode delivers superior durability and reliability. Nickel chromium ground electrode means consistent performance and prolonged service life. Nickel-plated rolled threads mean complete anti-seize and corrosion protection. Metal glass-fused center electrode seal prevents combustion leakage. Angular, five-ribbed insulator design prevents misfire due to current leakage.
Denso Iridium Plugs
Denso Iridium plugs are serious power and performance for even the most serious of performance minded customers. Pure Iridium has a melting point of almost 700șC higher than platinum and better withstands overheating, detonation, and oxidation wear. Denso Iridium plugs are combined with Rhodium for superior heat resistance and response. With high power and high heat turbo engines, you need all the help you can battling heat and detonation. Bring in a ringer with Denso Iridium plugs.We highly recommend iridium when running an ECU upgade as the high boost levels are hard on plugs which can lead to high load misfiring. Iridium plugs have shown real improvements in this area.
Spark plug gap is .028 - .032" (0.7 - 0.8mm) for all 200 series models with 4 cylinder engines.
