The secret of the new Iridium IX candle is the laser-welded iridium electrode. Through its & quotminimal & quot; diameter of only 0.6mm, the ignition voltage is packed. The advantages of Iridium IX candles at a glance The optimal ignition characteristics of Iridium IX candles avoid fouling in stop and go traffic. Misfires or misfires can be prevented. This reduces emissions and saves (if present) the catalyst and the environment. The Iridium IX spark plugs ensure "round" engine running, increase the driving experience through better acceleration and thus offer more driving fun. The Iridium IX candle lasts at least twice as long as a normal candle. Frequent candles are so "out". Which in turn reduces costs. Maximum ignition reliability, uniform combustion, optimum engine performance, throttle response are the result of modern technology and reduce fuel consumption. The optimized shape of the electrode reduces the ignition voltage, protects the engine and ensures "round" operation.