DOUBLE WALLED FUEL SUPPLY PIPE ELEMENT

A T-shaped double-walled fuel supply pipe element (110) configured to be used in a fuel supply pipe system (100) of an internal combustion engine (1) is disclosed. Local leakage detection in fuel supply pipe systems (100) can be extensive. The disclosed T-shaped double-walled fuel supply pipe element (110) may have an inner pipe (111) and an outer pipe (112) defining a leakage detection space (113) there between, the leakage detection space (113) being connected to the outside of double-walled fuel supply pipe element (110) via a pipe element leakage detection opening (117) formed in one on the end faces (115, 116) of the T-shaped double-walled fuel supply pipe element (110), and via a casing leakage detection opening (114) formed in a further end face (118) of the T-shaped double-walled fuel supply pipe element (110).