NOTE : It was originally used on the C-Type, racing derivatives of the XK120, so will fit any XK120, XK140 & XK/150 period cam cover AT THE FRONT END, as it fits between the first 4 studs ( 7 1/4" centres ), not in centre etc as stud distances do vary. Made from the correct, INSULATING  material Tufnell, it sits on the cam cover bolting down with the standard cam cover acorn nuts via two nicely styled, stainless steel feet.

Remember good engineering tells you that ignition H.T. cables should be separated by insulating materials to protect them and this looks so much better than the XK conduit tube, uses shorter cable leads and you don't have to remove the head nuts to fit it.