1998-2000 Pontiac Firebird LS1 EGR Air Emissions Block Off Plate Set

Fitment 1998-2000 Pontiac Firebird (with LS1 engine) Description LS1 Block-Off Plate Set includes 4 plates for AIR tibes (x2), EGR Tube, and EGR port on the intake manifold. Includes high-temp gaskets and o-ring seals for a worry free installation. Plates are CNC machined from billet 6061-T6 Aerospace Aluminum. Exhaust mounted plates are 1/4" thick to prevent warping from excess heat like most competitors plates. Finished with a clear anodizing process to prevent any corrosion or oxidation. Kit includes stainless steel mounting hardware to resist corrosion from harsh exhaust gasses. Comes with full installation instructions and installs easily. NOTE: Hardware is intended for OE exhaust manifods. Fits MOST aftermarket headers but we can not control what size threads they use. There is a small possibility you may have to source 4 bolts, depending on your headers.