are you talking about the little thing you press to release the air out? if so then no. the sensor itself is inside the rims.I had all 4 of mine replace when i has my REVO install.
Yeah......cores, worms, slimjim air plugs, etc! You can purchase these from any auto parts store along with a core remover tool. Then just head off to the local station and change the little plugger at the air pumper. You will lose all of you air when you take the old one out......goood luck!