@MikeYQM
I bought this 70mm OD pulley from FCP
https://www.fcpeuro.com/products/bmw...li-11281440237
and the pulley itself was correct.
It came with a bolt, but the bolt takes a Torx head, which might not be ideal for getting a wrench onto it when servicing the belt?
Junkyard might be the way to go for the bolt?
Side note:
My A/C & PS pulley was slightly smaller (65mm OD) than the Alternator/Water Pump pulley (70mm OD). The 70mm OD did work for both locations though.
I did finally find the proper part number for the smaller pulley, but it doesn't come with a bolt.
https://www.fcpeuro.com/products/clo...or-95510211921
Dust Cap:
https://www.fcpeuro.com/products/bmw...ap-11287535867