06 V8 Idler Pulley Bolt Size

[halvyt]

My girlfriend has a 06 with the V8 and her idler pulley bolt broke. None of the parts stores have any, they dont even have a part number for the thing. Anyways I was wondering if anyone knew the specs on the bolt?

[Rico]

There's a couple ways to handle this:

1) Remove what's left of the thread and take it to your local hardware store and match it up with a Grade 8 bolt. Metric?
2) Call some junk yards and see if they have any cars with the LS block. Take the pulley and the bolt.