Oregon Sprocket bearings are built to fit OEMs as well as their own sprocket systems. The 37325 bearing is compatible with the following saw models. Stihl: 024, 026 (before S/N X25809074), 034, 034 Super, 036, 039, MS 290, MS310, MS 360, MS 390, MS311, MS360, MS390, MS391, MS 260, MS 260 Pro, MS 270, MS 270C, 017, 018, 019, 021, 023, 025, MS 210, MS 250, MS 250C, MS290. Husqvarna: 36, 41, 136, 235E, 240E, 141, 142. Olympic: 931. Partner: 351. Tanaka: ECS-415, ECS-4000, ECS-3500. Home lite: 20, 23, 27, 2500, 2700, 3300, 3350, 3800, 3816, 3850, 4550, i3850b, i4150b, i4550b, PS-33, Timberman, UT10901, UT10910, UT10926