In Wrath of the Lich King it is item level 238 and requires level 80. In MoP Classic it is item level 238, requires level 80 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Furious Gladiator's Kodohide Helm Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Furious Gladiator's Kodohide Helm suits Assassination, Outlaw and Subtlety Rogue; Brewmaster, Mistweaver and Windwalker Monk; Balance, Feral, Guardian and Restoration Druid; Havoc, Vengeance and Devourer Demon Hunter.
Similar Items
The 10 items nearest to Furious Gladiator's Kodohide Helm (item level 35) in item level among Armor > Leather, Head slot, from item level 32 to 37.
Items Numbered Next to Furious Gladiator's Kodohide Helm
Blizzard numbers items as they are created, so the named items next to ID 41321 (41315 to 41327) were usually added in the same batch as Furious Gladiator's Kodohide Helm: the same quest line, zone, vendor or reward set.