MacBook 15" DC In-Board Number

I have a MacBook Pro 15 "unibody A1286 late 2008 and am looking for a Magsafe DC-In Board as a spare part. On the board of my broken DC-In board is the number © 2008 820-2361-A, a spare part number of Apple, however, is not known to me.

When searching the Internet I found a DC-In board, which has the same number on the board, but according to the dealer for a MacBook Pro 17 "A1297 is determined.

To my questions:

Is the DC-In board identical, if the number on the board is identical?

Does anyone know the spare part number of Apple for the DC in board for the MacBook 15 "?

Is the identical DC In Board for the MacBook 17 "offered under the same or a different spare part number?

Before I buy the spare part, I want to be sure that it fits into the system. For your help to my questions, I thank already in advance.