If yours are missing, your plug wires become out of control. They clip into the plug wire bracket stays shown above and keep them from laying on your exhaust manifold and keep the under-hood sanitary. These are included with the OE wire sets we sell.
fits 1981-1992 22R / 22RE / 22RTE each truck requires 1 single wire clip and 1 three wire clip
for 1993-1995 22RE Toyota does not sell these on their own, they are only available with the full plug wire set. Sorry.