In The Burning Crusade it is item level 159 and requires level 70. In Wrath of the Lich King it is item level 159, requires level 70 and sells to vendors for 1c. In MoP Classic it is item level 159, requires level 70 and sells to vendors for 1c.
Read from the World of Warcraft client build files.
How Brutal Gladiator's Kodohide Helm Compares
Who It Suits
Leather is the armor type Demon Hunter, Druid, Monk and Rogue wear. With Agility or Intellect, Brutal 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 Brutal Gladiator's Kodohide Helm (item level 34) in item level among Armor > Leather, Head slot, from item level 32 to 36.
Items Numbered Next to Brutal Gladiator's Kodohide Helm
Blizzard numbers items as they are created, so the named items next to ID 35023 (35018 to 35028) were usually added in the same batch as Brutal Gladiator's Kodohide Helm: the same quest line, zone, vendor or reward set.