RussBarnes, go on line and look up TPMS ACCESSORY, and you will find replacement kits. You'll need to know what brand of sensor is in your wheels in order to purchase the correct kit, the kit will come with pressure valve,seal cap and nut, never use a metal cap with a TPMS system because it interfers with the signal coming from the transmitter in the wheels. You should'nt have any trouble using the old plastic nuts even though you are instructed to replace with new kits every time you remove the sensor from the wheel,the plastic nut has a locking ring built into it that gets deformed when torqued to the valve stem, the only thing that might happen is the nut will back off and you MAY develope a leak and set off your dash light for low tire pressure. Hope this helps you and happy motoring.
