Model Compatibility: Fits ES-151, ES-152, ES-152A, ES-161, ES-162A, ES-171, ES-172A, ES-2030A, ES-2035A, ES-2040A, and ES-2045A models only. Part Type: Replacement clutch drum sprocket spur designed to match the ’s mechanical interface and functional role. Specification Match: Maintains identical dimensional and functional characteristics required for proper engagement with the clutch drum assembly. Installation Purpose: Restores when installed in accordance with the manufacturer’s service instructions for listed models. Usage Scope: Intended solely as a direct functional replacement for the clutch drum sprocket spur component in the specified ES-series models., Manufacturer: TRdkTDaen