What is this?

[Frank_Jaeger]

EDIT: I think I figured it out. I believe it's a TurboXS RBV-25 blow off valve. Can anyone confirm?
This arrived in my mail from Andy's Auto Parts. I don't know who sent it or why, or what it is.

http://i1217.photobucket.com/albums/dd389/delysid_/2012-10-17_13-00-35_316.jpg

http://i1217.photobucket.com/albums/dd389/delysid_/2012-10-17_13-00-39_564.jpg

http://i1217.photobucket.com/albums/dd389/delysid_/2012-10-17_13-00-48_52.jpg

http://i1217.photobucket.com/albums/dd389/delysid_/2012-10-17_13-01-11_960.jpg