Okay, so yes, the valve body for the aluminum wheels uses two o-rings between the back of the valve body and the rim, photo below. The aluminum rim valves use the same internals as the steel wheel valve and the rebuild kits I have for them do not include the o-rings for the back. These kits are technically for the steel wheel valve, so, I'm glad I looked into this so I can source the o-rings.
Picked up another unused rim and tire locally yesterday for $500. I already have a full set of 5, but couldn't pass this up. tire is a 2016 date code with sticker on it still and the seller said it was stored inside. Still won't run this tire on the front though since I don't really know its history.
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