Does this mount at the factory bumper bolt locations?

Yes. This reinforcement bar uses the factory mounting points on your Altima's front frame. No drilling, cutting, or frame modification needed—bolt it to the existing attachment holes and you're done.

Will this fit if I have a custom or aftermarket bumper cover installed?

The reinforcement bar mounts to the frame structure underneath the cover, so it works with any bumper cover that uses standard Altima mounting. If your cover uses non-factory attachment points, test-fit before final installation.

Does this come with bolts and hardware?

The assembly ships as shown—verify mounting hardware availability against your vehicle's existing fastener set before installation. You may be able to reuse fasteners from your current reinforcement bar if replacing a damaged one.