What are these called?

[Volatile]

In the engine bay of an ae82 corolla, where the steering components come thru the firewall and split off to the left and right going towards each wheel

here's a pic

[Low_Aa63]

steering rack boots or streering arm boots...something like that

[RedMist]

If its the rods you are talking about, then its called a tie rod or steeing rod.

[Lloyd]

1 is steering rack boot, 2 is the rack, inside on each end will be the rack ends, and the bits between there and the wheels is the tie rod end

[Volatile]

1 is steering rack boot, 2 is the rack, inside on each end will be the rack ends, and the bits between there and the wheels is the tie rod end

Thanks, Ive got a clunking sound comming from this area. When i grab the bar on the passenger side ( which is further to the right of number 2) it can lift it slightly up and down making the knocking sound.

My question is how do i work out what i need to replace?