601004680

Connecting sleeve for the installation of 50.1015.61 / 50.1015.61B / 50.1015.74 / 50.1016.61 / 50.1016.61B / 50.1016.74 on the original 2nd cat
or
Connecting sleeve for the installation of 55.0767.00 on the original rear muffler

Inner input diameter 76

Outer input diameter 65.5