OEM Part No: 1642K367TC, 16D025K3TC, SN1663SH, 164063SPNJ, 163SLGD025, 163VXLGD025, 600749, 16B3LSSNTimber Champ .325 – .063Fits Stihl models 024, 026, 028, 029, 031, 032, 034, 036, 038, 039, 040, 041, 042, 044, 045, 046, 048, 056, 064, 066, E15, E20, FARMBOSS, MS220, MS241, MS260, MS261, MS270, MS271, MS271, MS280, MS290, MS291, MS291, MS310, MS311, MS311, MS360, MS361, MS362, MS390, MS391, MS391, MS440, MS460, MS461