The part number is in the first post of this thread. I have not had any issues with the rear bushings yet.My luck ran out. I installed both front and rear Hellwig sway bars on my 2019 Max and have been loving the driving experience. I fell in love with my Expy again, especially after a trip from DC Metro area to Ithaca, NY. It was such a different experience experience from my previous trip. Anyway I am back home and the noise from what appears to be both front and rear bushings started. It is driving my crazy (and tired of my wife asking "what is that noise"), so I am about to purchase a set of replacements.
However before I do, wanted to confirm that the Energy Suspension bushings (need to part number for both front and read) are still the choice setup. Thank you in advance for your input/guidance.
I did end up replacing the front end links with a universal set made by Energy Suspension.