Recently there is a ticking noise from right side of my 2011 Challenger Pentastar 3.6L. I think need to change rocker arm but I'm not sure should I replace lifter as well or not?
If it is the common rocker issue, you generally do not have to change the lifter. You will want to confirm the rocker diagnosis. This is quite an involved repair, and there are timing issues as well as mentioned in this video