This is a "Gn1Performance Cork .25" Thick Oil Pan Gasket" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6. The gasket is a custom Gn1Performance product, The cork gasket is 1/4 of an inch think and is the best alternative to the other gaskets on the market.
