Contents of Kit 21676083
Hello:
This kit has two part numbers in it.
1) Two Disc kits (21357719) - attached is a picture of the discs.
2) And the upgrade oil kit 21551779.
Since purchasing the 21676083 is less expensive I would get it this way and just hold onto the discs or if you have not changed the discs maybe change them when do the other work.
J.D.