This exhaust manifold was precision-engineered and durably manufactured to match the fit and function of the original manifold on specified vehicles. It includes all necessary gaskets and downpipe hardware for a complete repair. This part is compatible with the following vehicles. Before purchasing, enter your vehicle trim in the garage tool to confirm fitment. [Buick Century: 1978, 1979] - [Buick Regal: 1977, 1978, 1979] - [Chevrolet Caprice: 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet El Camino: 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Chevrolet Impala: 1980, 1981, 1982, 1983, 1984, 1985] - [Chevrolet Malibu: 1980, 1981, 1982, 1983] - [Chevrolet Monte Carlo: 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [GMC Caballero: 1980, 1981, 1982, 1983, 1984, 1985, 1986] - [Oldsmobile Cutlass Calais: 1980] - [Oldsmobile Cutlass Cruiser: 1980] - [Oldsmobile Cutlass Supreme: 1980] - [Oldsmobile Cutlass: 1980] - [Pontiac Bonneville: 1983, 1984, 1985, 1986] - [Pontiac Grand Am: 1980] - [Pontiac Grand LeMans: 1980] - [Pontiac Grand Prix: 1980, 1983, 1984, 1985, 1986] - [Pontiac LeMans: 1980] - [Pontiac Parisienne: 1983, 1984, 1985, 1986]