11009-1858 Cam Tensioner Gasket to fit the z1300 tensioner upgrade 12048-1113.
11009-1858 Cam Chain Tensioner Gasket
This is the gasket for the Cam Chain Tensioner Upgrade that is recommended to be fitted to the z1300.
It also fits many other models including
Vulcan 500ltd, 1500, 1600
Ninja ZX6, 500R