Do NOT use the old FEAD belt with the updated pulley!

[telum01]

For those of you that have updated the idler assembly (pulley) on an early V8 Vantage from the original one to the newer dual-walled version: if you didn't swap in the updated FEAD belt along with it, you need to! Here's what happens if you try to use the old belt with the new pulley:

https://www.youtube.com/watch?v=sH3amk_VwhE

I've seen this on a few cars now, so I wanted to get a warning out there in case anyone wasn't aware that the old belt isn't compatible with the new pulley. The belts look very similar, but they are NOT the same.