A tire valve cap having an ABS thread shield that will not interact with the different metal valve stems used on today's vehicles. The ABS insert uses a unique snap in ring design with anti-twist taps that hold the insert into an outer metal cap and at the same time will not twist around inside the cavity of the metal outer cap. Further, the cap includes a unique manner of holding the stem seal in place by using an over-molded in seal (e.g., square O-ring) that will not dislodge with use.