FILLER NECK,VEHICULAR COMPONENTS - United States (US)
A metallic tubular item specificlly designed for directing the flow of a fluid, and must accommodate a CAP (as modified) or BREATHER on one end. The opposite end has provisions for mounting directly on, or indirectly through a pipe, tube, or hose to an engine crankcase, radiator, fuel tank, transmission housing, and the like. It may have means for overflow. For items which do not accommodate a BREATHER or CAP, see TUBE, PIPE or HOSE (as modified).