Notes: Used w/15849 if Air Tube Reqd; Up to 8500 G.V.W.R.;Used w/15739 if Air Tube Reqd;Under 8,500lb GVW; Used w/15849 if Air Tube Reqd; Up to 8500 G.V.W.R.;w/Conv; Used w/15742 if Air Tube Reqd;w/Conv; Used w/15739 if Air Tube Reqd;Used w/15742 if Air Tube Reqd