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I recently bought a set of RX-8 rims that came with TPMS sensors and I noticed that the round end needle thingy inside the TPMS valve stems are missing on all 4 sensors..you know the needle the you push to let the air leak out and makes that psssshhh sound.

You guys think i got some bad tpms valve sensors or do I need to buy and install that needle thingy inside????

The rims and tpms sensors came off an 04 RX-8 by the way.
 

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Make sure you get the correct valve core. I believe the cores on the TPMS are aluminum where the cores for basic stems are brass. Also, don't forget the valve caps (if the sensors did not have any on them) I ruined a core because the cap came off and salt got into the core and corroded it.
 

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Make sure you don't get metal caps either, they need to be plastic or TPMS friendly.
 
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