Replacement part numbers: A411000020 and A411000021 Compatibility - Echo leaf blowers: ES-2000, ES-2100, ES-211, ES-2400, PB-1000, PB-1010, PB-201, PB-2100, PB-2455, PB-2155 Key benefits - Restores proper fit and performance after wear or damage to the original part - Matches the original Echo replacement part specifications for reliable operation - Designed for straightforward installation as part of routine maintenance - Durable construction suitable for outdoor use and repeated start up What this part provides - Function: Replacement component to restore intended operation of compatible Echo leaf blowers - Compatibility: Verified fit with the listed Echo models to support consistent performance - Size and material: Size and material aligned with the original replacement part specifications to ensure correct fit and sealing Performance - Maintains compatibility across the specified Echo models to support reliable blower operation Use scenarios 1) In a service shop or on-site, replacing the part on ES-2100 or ES-2000 to restore airflow and starting reliability 2) As part of scheduled maintenance for a fleet of Echo blowers including PB-1000, PB-1010, PB-201, PB-2100, PB-2455, and PB-2155 3) Keeping a ready replacement on hand during peak yard care season to minimize downtime for homeowners or professional crews