Timing Chain Kit for Mazda 3, 6 & CX-5 2.2 D - SHY
Timing belt (camshaft) - Wikipedia
MAZDA: Engine Timing Belt, Chain Replacement
Mechanic “yeah you don't have to replace your timing belts, you have a timing chain, basically unbreakable” my car 3 years later while traveling abroad. : r/Justrolledintotheshop