Several manufacturers probably use them, but I don't know where you'd get
one generically unless you know someone who has a collection of those
types of clips. Your easiest bet is to probably go to the dealer and
order one, or if you're on really good terms, they may ask a couple of the
technicians if they can scrounge one up. Techs tend to hold onto whatever
spare stuff like that they can get because they know how useful it is when
they're in a pinch.
You might also want to check with local radio installers. There's always
the option of hitting a local junkyard. I'm sure you could get a handful
of these for little or no cost, especially if you're buying something else.
The guys that supply body shops with materials often have racks of clips for
all kinds of cars, all kinds of trim pieces. It's worth a couple of phone
calls. Hyundaitech's advice is good as well, but I'd add that it would pay
to go to the dealer's body shop and not the parts counter. Just like
aftermarket body shops, the dealer's body shop usually has miscellaneous
stuff laying around. I've picked up a lot of small stuff this way.
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