Mr. Gasket Sb Chevy Exhaust Gasket 150

Exhaust gasket failure is one of the most common sources of performance loss and air leaks in small block Chevy engines—compromising both horsepower and reliability. The Mr. Gasket SB Chevy Exhaust Gasket delivers a dependable seal that prevents exhaust bypass and maintains combustion efficiency, whether you're running a street engine or a dedicated race setup. With a composite construction designed to withstand thermal cycling and high-flow exhaust velocities, this gasket pair gives you confidence that your header or manifold seal will hold under sustained performance driving.

• 1.630-inch round port
• Composite material construction
• Small Block Chevy compatible
• Exhaust manifold / header gasket
• Pair (two gaskets)
• Bolt-on installation
• Performance-grade rating