The Original Equipment Manufacturers (OEM) requires that the valve stem components and EPDM rubber seals are replaced every time a tire is serviced on vehicles with TPMS, so be sure to stock up on this essential tool today!.TPMS Grommet Removal and Installation Tool This ergonomic, high-impact plastic tool quickly and safely removes old, worn TPMS grommets from valve stems without damaging the valve stem or yourself.