Crypt Fiend Parts

Crypt Fiend Parts are the limbs and carapaces of slain crypt fiends.

Source
This item drops from Crypt Fiends in Blackrock Depths, Western Plaguelands, Eastern Plaguelands, Scholomance and Stratholme.

As a quest objective
This item is an objective of the following quests:
 * Cryptstalker Armor Doesn't Make Itself...
 * Crypt Fiend Parts (quest)