i dont think anything plugs in there unless after you plug the hoses into the air box and into the tank you have an extra one....but i dont think anything goes there
its an 04-06 throttlebody lower vac tube, or some kind of return tube.
there's no designation,,,,but i have a california version,,,and im wondering if its something with AIS (smog unit) but if you can check out your TB and lemme know or better yet..how bout you post a pic.. i tried taking pics,,but my TB unit is on/in and ts was hard as hell getting the cables connected,,im dreading takin'em off again.
Check my krankvent thread. That looks to be a vacuum breather hose to the charcoal canister
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