类型*中心电极侧电极使用寿命**Benefits镍合金火花塞 镍包铜电极镍20,000 - 40,000 公里Standard style Spark Plug镍合金火花塞 (V-开槽)镍包铜电极(开V槽)镍20,000 - 40,000 公里Improved ignitability due to sparking at periphery of the electrode铱金火花塞铱金电极镍60,000 公里Long service life and even better ignitability due to a small diameter centre electrode铂金火花塞 铂金电极镍 铂金点100,000 公里Extremely long service life. High ignitability due to fine tipped centre electrode铱金多极火花塞 铱金电极镍 铂金点100,000 公里Extremely long service life. Improved high ignitability due to fine tipped centre electrode