Belt/ idler pulley recommendations

Usually the search feature is my friend. However I didn’t find anything about recommendations for belt, idler pulley, and belt tensioner replacement for the 5.7. Some on the first gen. May only need the belt but at 180k and if more need replacement I’d prefer to be ready.

 

Are you wondering what brand or if you should replace more parts? I'd loosen the belt quickly and give your idler and tensioner pullies a quick spin. If they don't feel and sound the best, might as well replace them too. I got dayco for all of it for mine. From rock auto. Dayco is the oem supplier for second gens.

 

belt: 90916-A2033
tensioner: 16620-0S012

The Toyota parts are good. I have found the belts to last longest with least stretching.

As mentioned above, remove the belt tension and check the idler pulleys.

 

I ordered mine from Toyota, costs more but worth it for piece of mind IMO. Honestly the OEM belt tensioner is downright cheap all things considered.

 

I ordered the Dayco kit for mine from rockauto.

The idler pulley turned out to be a defect and started whining on cold start after a month or so, replaced it with a continental idler and it went away. Probably just unlucky.

 

Thanks all!!!! that’s the feedback I was looking for. I work a lot and I’ll buy all the parts to replace anything that is needed as I pull work on it.

 

Here’s my Tundy too

 

I bought OEM parts: belt, tensioner and idler pulley from an online Toyota dealer for about $180 shipped. Also got a new hex bolt too (mine was rusting already). No more cold start squeal. 2016 with 120k miles.

 

I bought the Dayco kit from Rock Auto as well after initially purchasing the Gates kit. Upon unpacking of the Gates kit, I was not happy with the apparent quality and condition of the parts (very heavy machining marks with “made in China” in a cheap looking laser engraving on the belt tensioner). I returned them and reordered the Dayco. I am very happy with the Dayco parts. Clearly higher quality. In addition, when I removed the old belt tensioner from the engine, it was stamped as a Dayco part. Also, the Dayco tensioner comes pre pinned making install easier (will make more sense when you see how to remove the belt and pin the tensioner). Clear evidence of a superior part. Would highly recommend doing the belt tensioner and the idler pulley with the belt as they’re really designed to be changed together. My tensioner was making some noise but that is now all gone. Finally, consider buying a serpentine belt wrench. Good piece of gear.
https://www.homedepot.com/p/GEARWRE...-Tool-and-Socket-Set-15-Piece-3680D/204622165

 

^ I bought a $12 breaker bar from harbor freight that did the job just fine.

 

Different strategies. I bought the OEM parts from Dayco and the serpentine belt wrench for cheaper than I could have bought the Toyota branded parts. I have a breaker bar as well and the serpentine belt wrench is definitely better suited for the job.