Mr. Gasket Ultra Seal Exhaust Manifold Gaskets - SB Chevy - Stock , Small Race Port - Exhaust Port Width: 1.45" , Exhaust Port Height: 1.55" , Center Port to Gasket Top: .86" R07C08YXL metallurgy and engineering provides RACE

metallurgy and engineering provides RACE Series performance bearings with the endurance and capability to perform where others cannot

these MID-LENGTH headers are actually cataloged to fit Small Block Chevy V8 powered

and in less than 10 seconds you have it assembled

Assemblies come with all hardware and gasket

Chevrolet: Silverado 1500 99 - 06 4

Mr. Gasket Ultra Seal Exhaust Manifold Gaskets - SB Chevy - Stock , Small Race Port - Exhaust Port Width: 1.45" , Exhaust Port Height: 1.55" , Center Port to Gasket Top: .86" R07C08YXL metallurgy and engineering provides RACEUltra Seal premium exhaust gaskets have the ability to conform to warped flanges for a tight seal. They have superior tensile strength to resist cracking. The graphite facing withstands heat, and allows easy removal. Vehicle Applications: 1979 1995 GMC C2500 Suburban 1987 1988 Chevrolet R20 Suburban 1987 1989 GMC R2500 1977 1979 Oldsmobile Omega 1977 1979 Buick Skylark 1955 1957 Chevrolet One Fifty Series 1968 1974 Chevrolet K30 Pickup 1989 1991