GY6 139QMB fender liner
 

Been searching and searching for that short black plastic fender that bolts to the right side of the engine, just behind the carburetor, to keep mud and water off the carb and air cleaner. This is that "fender liner/ mud flap liner" that rides very close to the rear tire. Can' figure out why it is so hard to find this $5 part that is so essential to keeping your carb area reasonably clean.

Expensive piece of plastic.... https://www.ebay.com/itm/GY6-150CC-S...VZiH9G&vxp=mtr