This is one set of header/manifold bolts for all LS engines, whether it be a 5.3 pickup or a 6.2 Corvette. These bolts have a shiny finish.
These are a great replacement for the factory bolts, and will work with aftermarket headers. They are a much higher quality bolt than comes with most header sets, zinc plated to resist rust.
Truck owners take note: The GM bolts on pickup trucks equipped with these engines are notorious for breaking, particularly the hard to reach bolts in the rear. We highly recommend replacing the factory bolts before it happens to you!