Bolts received only, no other hardware included. Bolts were just right for a 5.7 liter Hemi but no hardware I had to pay the mechanic extra money to fit the headers.The bolts arrived as specified but as this was an incomplete set it didn't matter when they arrived.I planned on replacing the exhaust system knowing that I had everything I needed to get the job done.Slightly annoying that the header bolts now have to be tightened every few months.