What is it with these caps?! This is the third wheel center cap I've lost this year. Strangely, all three instances have occurred on the rear wheels. ::sigh:: . Last time it took two weeks for the replacement cap ( 1J0-601-171 ) to come in. I think this time I'll order a couple of them and stock up. Wangos. Anywhoo, more information and pictures are over here .