This is our aftermarket Graphite-based Engine to Manifold exhaust gasket for the 3rd generation "FD" RX-7, with the 13B-REW engine. Graphite can take extremely high temps and this material can deal with up to 0.040 manifold warpage, which is far better than the expensive stock gasket. Price is per gasket. A pair is required.Sold individually. A pair is required.