An injection molding nozzle with a collar having two segments mounted around the rear end of an elongated central body having a hollow central core. A helical portion of an electrical heating element is cast in a copper alloy conductive portion around the central core. The heating element has a pair of lead portions which extend outwardly through the collar into a ceramic insulative connector. The lead portions extend in stainless steel protective tubes having inner ends rigidly cast in the copper alloy conductive portion over which the insulative connector is mounted.