Lower REAR ball joint between the hub and the control arm.
Bad ball joints affect alignment, handling, and tire wear. These fit the AW11 1985-1986 or the "MK1a" rear. Sold individually, make sure you have the necessary matching pair/full set (different fronts) if needed.
Toyota Part Number: 43330-19037
Unless specified otherwise, parts are OEM-style replacements and intend for use with the original part numbers specification. Replacements are often unbranded OEM manufacturers, while other times they may be the same if not better quality aftermarket brands with slightly different designs/looks.