Does this bolt straight to my radiator without any modifications?

Yes — this assembly mounts at factory points with no drilling or bracket fabrication needed. Bolt it to your existing radiator support and you're done.

What comes with this — do I need to buy fasteners separately?

All mounting hardware is included in the assembly. You'll just need basic hand tools and maybe 30 minutes to swap out the old fan.

Will this cool as well as the factory fan?

This is engineered to OEM specs, so cooling performance matches what Honda designed for your CR-V. If your original fan is failing, this will restore full capacity.