Brighthelm of Justice: Drops from Hydross the Unstable in Serpentshrine Caverns.
Pauldrons of the Argent Sentinel: Drops from Morogrim Tidewalker in Serpentshrine Caverns.
Justicar Chestguard: Paladin only. The token for this drops from Magtheridon. There are several other similar chest pieces that could be used by any plate wearer.
Gauntlets of the Righteous: Dropped by Warchief Kargath Bladefist in Shattered Halls.
Girdle of Valorous Deeds: Dropped by Aeonus in Heroic Black Morass.
Legplates of the Righteous: Dropped by Aeonus in the Black Morass.
Boots of the Righteous Path: Dropped by Warchief Kargath Bladefist in Heroic Shattered Halls.
Icy Cloak: Crafted by Tailors. There are a number of other cloaks with the same appearance.
Bloodmaw Magus Blade: Dropped in Gruul's Lair.
Aldori Legacy Defender: Dropped in Gruul's Lair.