In Heroic Mode Auchenai Crypts, the rare drops from bosses have been adjusted to level-70 quality. Those drops are provided below, by boss.

Shirrak the Dead Watcher
Inv bracer 16
Inv weapon hand 07
Inv shoulder 34
Inv gauntlets 19
Inv boots chain 13
Inv helmet 52

Exarch Maladaar
Inv boots chain 06
Inv pants plate 12
Inv jewelry ring 55
Spell holy summonlightwell
Inv jewelry ring 38
Inv axe 62
Inv shoulder 15
Inv elemental primal nether2020