Warning - Broken control arm bolt!

[andulong]

I just bought a set of bolts at my local Toyota dealer today. Unfortunately they look just like the old ones and have two marks, or lines on the head. I hope they did not sell me some old ones hoping I would not know the difference. Is there any other way to tell the difference? I am waiting to install them until I am sure they are the upgraded bolts. I am afraid if I go back to Toyota they will not know the difference, if there is one. Thanks.

Originally Posted by CTScott

At least, if nothing more, the changed markings allow one to easily tell if they have new ones (old left, new right):

Attachment 49382

[CTScott]

Originally Posted by andulong

I just bought a set of bolts at my local Toyota dealer today. Unfortunately they look just like the old ones and have two marks, or lines on the head. I hope they did not sell me some old ones hoping I would not know the difference. Is there any other way to tell the difference? I am waiting to install them until I am sure they are the upgraded bolts. I am afraid if I go back to Toyota they will not know the difference, if there is one. Thanks.

There is not actually a different new bolt. It is simply a case of replacing like with like, and if you read the TSB, doing a bit of extra seam sealing limit the water that can enter in with the bolt.