This genuine STIHL 41402000529 ignition module is a critical OEM component designed to provide the necessary spark for reliable engine starting and consistent operation. It is compatible with a wide range of STIHL handheld power equipment, including various trimmers, brush cutters, and other machines. Confirmed fitment includes models such as the FS 38, FS 45, FS 46, FS 55 series (FS 55 R, FS 55 C, FS 55 RC, FS 55 T), HL 45 hedge trimmers, HS 45 hedge trimmers, and KM 55 KombiEngines. This module ensures optimal engine performance and efficiency by delivering precise ignition timing.