I dont see any picture.

but x2 on the compressor. on my late W210 the ac compressor pulley was noisy when I bought it, it made the exact noise of a PS pump.

stethescope tracked it down.

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2012 BMW X5 (Beef + Granite suspension model)

1995 E300D - The original humming machine (consumed by Flood 2017)
2000 E320 - The evolution (consumed by flood 2017)