I know this thread is a little old, but I just joined today and wanted to add my experience with this part.

I've got a 97 SR5 4Runner that had this bushing replaced twice by two different dealers before 30K in mileage. It now has 126K and the third bushing just wore out today.

I've found a few sites explaining how to replace this bushing on a Tacoma and on a MR5 but nothing specific to the 4Runner yet.

I highly recommend that anyone experienceing a squeaking or grinding from the clutch pedal assembly get this bushing replaced ASAP. When the second bushing wore out (I don't think it had been installed right because it only lasted 2K miles) the clutch pedal bound up with the clutch partially disengaged and so it was slipping severly. Fortunately I was able to pull to the side of the road and stop safely. After about 10 minutes of playing with the pedal assembly it unbound and I was able to continue driving. The next morning I had it at a dealer getting replaced.

From what I have heard, the replacement is not overly complex and would probably make a good article in the 4Runner section.

Mike