That aluminum piece is a structural support so if it's too damaged, you may want to think about replacing it. It's not horribly expensive IIRC.
Also there is a filter in the bottom of the power steering fluid reservoir. It's not serviceable. So normally when changing out the power steering fluid, the whole reservoir is replaced... Not that it had to be done but something you may want to consider.
Dinan CAI &Throttle body, ESS Tuning TS2, Bimmerbrakes gen3 headers, UUC SSK & DSSR. Achilles oil pump, VAC oil pan baffle
M3 Motor mounts, UUC Trans mounts, Modified clutch style LSD 3.15, TMS front subframe reinforcement, Koni Yellow sports,
H&R sport springs, UUC sway bars, BMW Perf. Rotors, UUC SS brake lines, Hawk HPS pads, CSL replica wheels,
Rotora strut bar, FXR HID conversion, M3 Mirror conversion, BSW stage 1 speakers