Authentic original type cable with black knob and the word "HEATER" embossed in white as fitted to early minis and coopers before the introduction of the plastic safety feature type cables.
There is a budget copy available which uses a different material and shape on the knob and script is not exactly as original,see
14A9988MSThe grommet in the body for this cable to pass through is
CAM5969 if the hole is 11/32".