- "A gear used in ancient machinery. Despite being incredibly old, it's build quality is leaps and bounds above anything built using current technology."
- — In-game description
Ancient Gears are items in The Legend of Zelda: Breath of the Wild. It is a Guardian Part obtained by defeating certain types of Guardians, by searching broken guardians, or lifting legless Guardians near sources of water using the Cryonis Rune. Link can also purchase them from the traveling merchant Teli who travels around the Necluda province. Like all Guardian Parts, it is a piece of ancient machinery created by the ancient Sheikah.
Ancient Gears can be used by Great Fairies to upgrade certain armor. At the Akkala Ancient Tech Lab Ancient Oven Cherry can use them to forge certain types of Ancient Soldier Gear after Link relights its Furnace during "Robbie's Research". Additionally like Monster Parts, Link can use them to create Elixirs by cooking them with Frogs, Lizards, or Bugs.