It says it fits Ms and non-Ms...which brings us to the original issue.
I'd just stick with OEM. You can get a radiator from Pelican for $130. It is a relatively easy DIY. The hard part is disconnecting the plastic hoses and expansion tank. If you replace those as well then the DIY should be much simpler.
2013 F30 328i - Melbourne Red
2011 E90 M3 - Monte Carlo Blue
2004 E46 M3 - Imola red