Genuine Gates Oil Pump Belt for Vespa ET2 and Piaggio 50cc 2 stroke engines in the US. You know it's probably never been changed, and those ET2s out there are getting old. Go ahead and change it out so that's one less thing to worry about.
This belt fits every Piaggio 50cc two stroke. It fits Aprilia, Italjet, Derbi, Piaggio, and Vespa engines. 286162
Aprilia 50cc With Piaggio Engine
DERBI Atlantis 50
DERBI Bullet 50