Here's the parts list for the PPK2.
https://www.1addicts.com/forums/show...6&postcount=11
I think it's part number 2159876 but not sure. I've tried searching online and can't find any concrete information on it. I also tried searching the online parts catalogs under a 135is and haven't been able to find anything there either.
I also pulled my relay bracket to see if there are any part numbers printed on the bracket and didn't see anything. I haven't yet pulled the relay off the bracket to see if it's being covered by the relay. I'll see about doing that today or tomorrow.
If you're interested, here's the thread I created when I purchased the PPK2 parts way back when I had just purchased my car. There's also a post in that thread that has the installation instructions uploaded.
https://www.1addicts.com/forums/show...6#post16240876