Some helpful info regarding valve stem replacement on Audi OEM TPMS sensors that were made by VDO.

If the current TPMS sensor on your vehicle is the gen 1 VDO TPMS sensor, the valve stem cannot be replaced.

The gen 1 OEM VDO TPMS sensor looks like this:


The VDO REDI-Sensor part number SE10003 is available as a replacement for several Audi vehicles. The valve stem on the SE10003 REDI-Sensor can be replaced.

The VDO REDI-Sensor looks like this:


The VDO REDI-Sensor valve stem can be purchased here - http://www.tpms.com/ContiValve_VDO_C..._p/se54191.htm