Camshaft chain tensioner for 50cc GY6 139QMB engines

A camshaft chain tensioner, also known as a camshaft chain regulator, is used to adjust the timing chain tension on the 50cc GY6 139QMB engine
Description
Camshaft chain tensioner for 50cc GY6 139QMB engines. A camshaft chain tensioner, also known as a camshaft chain regulator, is used to adjust the timing chain tension on the 50cc GY6 139QMB engine.
Please check the dimensions on the Specs tab to see if this is the correct camshaft chain tensioner for your Chinese built 50cc GY6 139QMB engine.
WARNING California Residents: Proposition 65 Warning
Specifications
Length: 7-3/4″
Inner Hole Diameter: 6 mm