it is a relay rod by toyota definition. it is the main steering linkage rod. it ties the right idler arm, pitman arm, and left tie rod together.
that's the pitman arm to steering linkage bushing that's bad.
i tell you what. forget autozone.
here's a factory shop manual,
http://www.ncttora.com/fsm/1985/1985FSM_OCR.pdf
dl that and go to pg 759 for an illustration.
cheers!
owner 92 toy pu 4x4