... . MODEL D7EA spark plug detailsCentral Electrodecopper, alloy, platinum, iridium goldCeramic white or colored, heat resistingMetal appearance plating,bronze,silvery,golden yellowMOQ 10,000pcs ... HAVE REPLACED IT MANY TIMES BEFORE.3, MAKE SURE SPARK PLUG RIGHT INSTALLATION. SPARK PLUG HOUSING BREAKS IF TOO TIGHT WHILE MOTOCYCLE SHAKES IF ...