Steering Rack End Cap passenger side

Hi Guys,
2009 SR5 V6 4x4
My steering rack has a little of up/down play on the passenger side. No leaks. Sometimes it makes metal on metal sound over bumps. I know for sure that the rack makes that noise, as I recreated the same sound by moving the shaft up/down on the passenger side.

I am trying to source end cap for the rack to replace it. There is a sleeve/bushing inside the end cap, which is probably worn, that's why there's a play.
Does anyone know where I can find it.
The end cap should look like two last images.
Thanks.