We currently don't offer replacement belt as they are found with better pricing out at other internet retail sites. 
For replacement belts; copy & paste the following links according to your machine serial #. 
Up to Serial # 1314 (B45 Gates HiPower II Belt)
https://goo.gl/x7cYeb
Serial #1315 - #1352 (size B46)
https://goo.gl/cG9Y1H
Serial #1353 and up (size B48)
https://goo.gl/XImBhf
If you have any question about Belt size, or which one you should buy, please contact us at sales@yardbeast.com 
Tags: replacement belt