In Wrath of the Lich King it is item level 245, requires level 80 and is named Worldbreaker Kilt. In MoP Classic it is item level 232 and requires level 80.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Conqueror's Worldbreaker Kilt Compares
Who It Suits
Mail is the armor type Evoker, Hunter and Shaman wear. With Agility or Intellect, Conqueror's Worldbreaker Kilt suits Beast Mastery, Marksmanship and Survival Hunter; Elemental, Enhancement and Restoration Shaman; Devastation, Preservation and Augmentation Evoker.
Transmog Sets
Conqueror's Worldbreaker Kilt is part of the transmog set Valorous Worldbreaker Regalia (Shaman only). The other 16 pieces:
Built from the World of Warcraft client build files and recorded Auction House snapshots.
Where Conqueror's Worldbreaker Kilt Fits
Other Items Named Conqueror's Worldbreaker Kilt
1 other item in the current build is also called Conqueror's Worldbreaker Kilt. Same-name entries are usually a different rank, faction, quest stage or reward track of the same object.
Items Numbered Next to Conqueror's Worldbreaker Kilt
Blizzard numbers items as they are created, so the named items next to ID 46210 (46205 to 46215) were usually added in the same batch as Conqueror's Worldbreaker Kilt: the same quest line, zone, vendor or reward set.