Idler Pullys for engine/belt

[johnboneske]

Are all the idler pulleys the same on the front of the engine? I am talking about the non grooved ones. I have a bearing going bad on the upper one on the drivers side of the engine. I have the 5.4... I was looking on rockauto and they have several listed but all are the same size. Thank you!

 

[Skauber]

The two smooth idlers are the same, then there's the grooved one. In addition to these, you have the tensioner as well..

I used this kit, no issues so far:

https://www.rockauto.com/catalog/moreinfo.php?pk=5536053&cc=1433355&jnid=490&jpid=0