the pvc pipe goes from the pvc valve to a gromlet the is on top of the throttle body it is under a lip then it goes into the valve cover on the backside of the motor. the gromlet that is on top of the throttle body is a soft gromlet and will get sucked into the throttle as it falls apart. but it needs to be replaced as soon as you can because dirt and debris are being sucked into the throttle body through the hole that the gromlet fits in.to get the correct one you are either going to have to go to a dealer and get shafted. or measure the hole diameter and the diameter of the fitting that is on the pipe and go to a parts store that has a help center and get a gromlet from the measurements you need. autozone has a help center and the gromlet will cost you a couple of bucks. this is what i done on mine but i can't remember the inside and outside diameter measurements as this was two years ago. let me know how it goes..