For Stihl MS170 MS180 017 018 new model from 2013 (16'), MS171, MS181, MS181C, MS211, MS231, MS241, MS251
For HS81T, HS81R, HS86R, HL90K, HL95, HL95K, HL100, HL100K, HT100, HT101, HT130, HT131
For (FS40 from year of manufacture 2008), (FS50 from year of manufacture 2008), FS56, FS87, FS90, FS90R, FS100, FS100R, FS100RX, FS130, FS130R, FR130T, FC70, FC90, KM56, KM90, KM90R, KM100, KM100R, KM110R, KM130, KM130R
For BG56, BG56C, BG66, BG86, BG86C, BR500, BR550, BR600
Package include: 2x Spark plug