The STIHL 11231900700 ERGOSTART Spring Housing is a genuine OEM replacement part designed for the easy-start ErgoStart system on a wide range of STIHL power equipment. This critical component ensures smooth and reliable starting for compatible chainsaws, trimmers, brushcutters, blowers, and other machines. It maintains the integrity and functionality of your STIHL equipment's starter mechanism, providing dependable performance for models such as MS 210, FS 80, BG 55, and many more.