What's the 2006 Ford Fusion idler pulley bolt size?

The 2006 Ford Fusion will use an 8mm idler pulley bolt, that is 12.9 grade. Many drivers online have reported that these fail and fail often, since it's such a small bolt; be ready to replace it at regular intervals if that's what the idler pulley gods will. They're malevolent, according to others, so You might have to find a way around it. Some other drivers mention that they've drilled the hole to 11/32 of an inch, and tapped it with a 10mm bolt to replace it. This comes from a driver that said he or she has gone througH14(!) idler pulley bolts in a little over two and a half years. You certainly may want to look into replacing, so this doesn't become Your issue.