This part will fit the following Stihl Products
TS 410, TS 420, KM 55, KM 55 C, KM 55 R, KM 55 RC, FS 400, FS 450, FS 480, BT 120 C, FC 55, BT 120 C, BT 121, FC 55, FR 350, FR 450, FR 480, FR 480 C, FS 120, FS 120 R, FS 250, FS 250 R, FS 300, FS 350, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FS 55, FS 55 C, FS 55 R, FS 55 RC, FS 55 T, FT 250, HL 45, HT 250, MM 55, MM 55 C, SP 200, TS 410, TS 420.