In order to reliably avoid hot-spot areas occurring while nevertheless allowing optimum heating for a media line and line connectors, the invention relates to a prefabricated heatable media line (1) which comprises at least one media line (10) with a line wall (101) and an inner line lumen (100); at least one line connector (11, 12) that is connected to the media line (10) in order to connect said media line (10) to at least one component (6, 7) and/or another prefabricated media line; at least one heating device which is coiled and/or extends with deflections along said media line (10) and line connector (11, 12); and at least one insulating cladding system (15, 16, 17, 19) which at least largely surrounds said media line (10) and line connector (11, 12) in the axial circumferential extension. According to the invention, said heating device is a heating-strip stranded wire (2) that comprises at least two contact conductors (25, 26) and at least one electrically-conductive plastic (27) which has electrically-conductive nano-sized particles that are in contact with said contact conductors (25, 26), this heating-strip stranded wire (2) being flexible and bendable as a result of its geometry and/or the selection and/or quality of material, being arranged at least partially in a coiled form on the outer side of said media line (10) and line connector (11, 12), and being provided with electrical contacts (23, 24) at one end (21) and with insulation (22) for the contact conductor ends (125, 126) at the other end (20), at least one end section of said heating-strip stranded wire (2) being arranged in the region of one of the line connectors (11, 12).