The STIHL 63927025000 Mesbus is a genuine OEM measuring bushing designed for precise fit and optimal performance in a wide range of STIHL outdoor power equipment. This critical component ensures proper fuel system function in models including popular chainsaws like the MS 200 and MS 250, trimmers such as the FS 80 and FS 85, and various blowers and cut-off saws. Manufactured to STIHL's exacting standards, it guarantees reliable operation and extends the lifespan of your equipment.