I asked the service team about this job. and some of them said Belt and other said chain ... so in Lexus ES 350 2007 does it have Timing belt or Timing chain...???!!!
The engine contains Timing belt or chain in this model on 2007 Lexus ES350
The 3.5L V6 engine on your ES350 is equipped with a Timing Chain that requires no periodic replacement.
3 more answers , 1 more comment
strongly say chain
I would say timing belt.
And you would be wrong. Chain.
I remember reading that starting with the 2008 model, the 3.5 V6 engine will now have a timing chain.