CHAMPIONSpark plug
CCH639ParamsDistance between electrodes: 0.6mm; Joining technique: SHIELDED; Thread Size: M18x1,5; Width of gutter key: 22,2mm; Spark plug: 4 electrodamasses; Thread Length [mm]: 13.5; Technical Information Number: RHM83N; Version: withgasketseat; Resistance from [kOhm]: 6s; Resistance to [kOhm]: 15 s