Do I need to remove the entire seat frame to install this?

No. The cushion pad attaches directly to your existing frame using factory mounting points — you can work on the seat while it's still in the truck.

Will this work if my seat frame is damaged or cracked?

The pad itself is a direct bolt-on replacement. If your frame has cracks or broken welds, the pad alone won't fix structural damage — you'd need frame repair or replacement first.

Does this come with new fasteners?

The pad ships as the cushion only. Reuse your existing hardware from the old pad, or source standard automotive fasteners that match your factory attachment points.