Originally Posted by 03MstyleX5

heres my rear wiper delete. to make the perfect plug you can use 2 of the parts from the wiper assembly. the first piece is the cap that covers the pivot shaft that gives you access to the nut. the other is the rubber grommet that seals the shaft running through the glass. i shaved the inside of the rubber with a utility knife for the cap to fit perfectly. it takes a couple times putting it in and out to get the right fit. mine has stayed 100% waterproof for about 6 months now without any glue or sealant. i wash mine so often i dont really have to worry about a dirty rear window. during winter months like these it does get pretty dirty but thats what the 2 side mirrors are for. haha i mean the stock x5 mirrors are big enough.