I have 2005 Dodge SRT-4 Am having an issue where rain water is leaking into the spare tire space in the trunk which in turn is leaking in the my rear driver's side floor pan. I've done some research and it's likely an issue with the seal around the tail light, which I'm going to fix myself. Or it could be this other piece that I am unable to figure out what exactly it's called.. I have one missing on the same driver's side trunk area and would like to try replacing it first. Here is a pic of the part : Can anyone tell me the name or part # of it? The diagrams I've found on the parts websites aren't very clear as to what they are. Any help would be appreciated. Thanks Ben