Tank system

A fuel tank system with a filler tube (1) and a filler hose (2) connected to the filler tube (1), wherein the filler hose (2) leads to a fuel tank, wherein a support sleeve (3) is provided to support the connection of the filler tube (1) with the filler hose (2), wherein the support sleeve (3) is made of electrically conductive plastic, the filler tube (1) as well as the filler hose (2) are designed to be electrically conductive, and the support sleeve (3) bears against both the filler tube (1) and the filler hose (2).