Carburetor replacement designed for Echo PB580 and PB580T backpack blowers. Directfit replacement that meets the specifications of part numbers A021004331 and A021004331 for seamless installation and consistent performance. Key benefits Restores proper fuel delivery and starting performance by replacing worn or damaged carburetor components. Complete installation kit reduces downtime by including gaskets, fuel lines, primer bulbs, spark plug, and fuel filter. Direct replacement to match OEM specifications, minimizing adjustments and ensuring correct fit. Durable construction intended for regular outdoor use and routine maintenance. What is included 1 carburetor 2 gaskets 1 spark plug 1 fuel filter 2 fuel lines 2 primer bulbs Function and performance Replaces the original carburetor assembly to restore engine idle, throttle response, and fuel metering. Gaskets and fuel lines help prevent leaks and ensure a secure seal during installation. Primer bulbs and fuel filter are provided to complete the fuel system refresh for reliable starts. Compatibility and part fitment Compatible with Echo PB580 and PB580T backpack blowers for direct replacement applications. Designed to part numbers A021004331 and A021004331. Typical use scenarios Seasonal maintenance: a worn carburetor and related fuel components during annual service to maintain reliable operation. Field : Carry as a complete kit to address carburetor failure or fuel delivery issues on job sites. Equipment refurbishment: Use when refurbishing a used blower to aging fuel system parts and improve starting reliability. Notes Intended as a replacement part for the listed models and part numbers. Installation by a technician or experienced user is recommended to ensure proper adjustment and safe operation.