absolutjer

I have been lurking for years here so now I feel totally guilty finally creating an account only to ask for help.

I am in the middle of my first brake job on my 2009 GL550. (I usually take it to the shop) I am doing pads and rotors.

All was going well until it came to removing the caliper mounting bracket. I do not seem to have a socket or wrench large enough for the bolt.

Does anyone happen to know the GL550 caliper mounting bracket bolt size?

I need to go buy a new socket but have no idea which size I need.

I have searched the forum here and Google to no avail. Thank you in advance.

absolutjer

I figured it out. For anyone else that runs into this issue in the future you will need a 21mm socket to remove your caliper mounting bracket when replacing rotors on a GL550

MRAMG1

More importantly, is where did you get your 9mm allen for the caliper bolts?

I had to borrow one from our maintenace department, as NO ONE in Pittsburgh had a 9 for sale. And of course, I had an 8mm and a 10mm socket. Go figure.

Glad to see another DIY guy here