Kirby Sentria Transmission ...
$6.99
Product details
This genuine OEM transmission primary sprocket (part 550505) drives the self-propelled system on Kirby Sentria and Avalir uprights. The sprocket transfers power from the motor into the transmission, turning the geartrain that pushes and pulls the machine for you.
A sprocket with worn or chipped teeth slips against the drive, so the self-propel feature stutters, drags, or quits and the vacuum turns heavy and hard to push. A fresh sprocket restores clean tooth engagement and smooth, steady power drive.
- Fits: Kirby AVALIR, AVALIR 2, AVALIR PLATINUM, SENTRIA, Sentria II
- Part: transmission primary sprocket, 550505
- Function: transfers motor power into the drive transmission
- Benefit: restores smooth self-propelled operation
Align the new sprocket with the drive and secure it before closing the transmission. Confirm your Kirby model before ordering to be sure of the fit.









