Part number for Brake Caliper Bracket Bolt

[Grantbo]

I have a 2006 M45 sport with 90k miles. I replaced rotors, pads and full calipers (carriers and brackets) and lost one one of the 18 or 19 mm bolts that mounts the caliper bracket to the rear hub/knuckle. I have looked at parts diagrams online and called several dealers and have had not luck in finding the part number for this bolt. I do know that it is a M12 x 1.25 x 30 or 40 mm. Can anyone help find this elusive part number?

Grant

[Grantbo]

I called multiple local Infiniti dealers and reviewed several parts schematics, but could not locate a part number for the upper rear brake caliper bracket. I found a few references to bolt sizes so I ordered a few different sizes from bolt depot.com. Turns out a 12mm x 1.25mm x 35mm is a perfect fit. Bolt is grade 10.9 and part # is 15248. Posting here for future reference.

[merlinq2]

Those things are terrible aren't they, they rust fast and not matter how much anti seize you use they seize. I had to drill out two of them. I am replacing both rear calipers next week, I just spent the better part of Sunday trying to loosen one of those bolts and she is as smooth as a strippers rear end.