[JFG]

Hi, I have just finished working through this puzzle, sort of. The original idler on the tensioner is 16604-0P010. If you order this original Toyota part you will likely be shipped the standalone idler, 16604-0P011 as the 010 idler has been superseded. I can tell you that they are not the same and when I tried to put the standalone 011 idler on a tensioner I have, it rubs. One would have to place a significant spacer in behind the idler to make it work with the proper clearance. There is a TSB on a noisy idler but it doesn't really address the above problem(TSB0056-11). The bearings, which affect the attachment distance from the tensioner, are of different widths. It looks like one fix would be to just put in a new bearing in the old idler, but I do not have that capability. The local toyota parts department did not have any solution other than to say the 010 is superseded by 011 and they sell it with a cover/spacer 16649-31020. Perhaps someone has found a fix, maybe non oem parts. Photo shows 011 standalone idler on the left and 010 tensioner idler on the right.

 

[JFG]

Hi, is there possible to change only the bearings on both puleys ? Saw a video on youtube that show guy changing it on a Lexus ...