This is a set of "Stainless Steel Bolts and washers for a set of Aftermarket Valve covers" for a 1986 or 1987 Buick Grand National, T Type, Turbo T, or GNX 3.8 liter turbo V6.
Please note these only work on the tall aftermarket valve covers such as our Gn1Performance Model or others on the market similar to that casting style.
