Kirby Avalir Base Pan Sub Assembly #604314SThe base pan sub assembly on the Kirby Avalir forms the structural foundation of the vacuum's lower housing when it's cracked, warped, or broken, performance and safety suffer. This OEM replacement restores the unit to factory spec. Genuine Kirby part built to the exact tolerances of the original Avalir base pan Direct factory fit no drilling, trimming, or modifications required Restores proper alignment of internal components housed in the lower pan