Imagine my surprise when I opened the hood on my wife's Audi to check the oil and found the top of the OEM dipstick gone. Gone, as in rotted, broken, and laying on the intake manifold in a crumbly pile of orange plastic. Well, after paying several hundred bucks every few years because the OEM plastic t-stat housing rots and starts to leak, I decided I wasn't going to pay Audi prices for something that was just going to rot and break years in few anymore.So, I bought the Dorman. Installation should have been a piece o' cake, but when I was removing what was left of the original dipstick, half of the dipstick tube came with it.(See my review of the Dorman 917-356 Dipstick Tube) Once the tube was replaced, though, the dipstick looks like it was born there.