In Wrath of the Lich King it is item level 226, requires level 80 and is named Dreadnaught Breastplate. In MoP Classic it is item level 213 and requires level 80.
Read from the World of Warcraft client build files (JournalEncounterItem, JournalEncounterCreature, Achievement) and the Blizzard Game Data quest API.
How Valorous Dreadnaught Breastplate Compares
Who It Suits
Plate is the armor type Death Knight, Paladin and Warrior wear. With Strength or Intellect, Valorous Dreadnaught Breastplate suits Arms, Fury and Protection Warrior; Holy, Protection and Retribution Paladin; Blood, Frost and Unholy Death Knight.
Similar Items
The 10 items nearest to Valorous Dreadnaught Breastplate (item level 35) in item level among Armor > Plate, Chest slot, from item level 32 to 39.
Items Numbered Next to Valorous Dreadnaught Breastplate
Blizzard numbers items as they are created, so the named items next to ID 40544 (40536 to 40549) were usually added in the same batch as Valorous Dreadnaught Breastplate: the same quest line, zone, vendor or reward set.
Explosive DecoyID 40536 · Consumable · item level 30"Warning Label: May explode prematurely if subjected to an electromagnetic pulse."