SB Chevy Exhaust Gaskets Square Port Stock Size

The FEL-PRO SB Chevy Exhaust Gaskets Square Port Stock Size (part number 1444) are precision-engineered header and manifold gaskets designed specifically for small block Chevrolet engines with 1.380-inch square port configurations. These gaskets form a critical seal between the exhaust manifold and cylinder head, preventing exhaust gas leakage and maintaining engine efficiency. Built with a steel core laminate construction, they deliver the durability and heat resistance required in high-temperature exhaust environments.

The steel core laminate design is engineered to withstand thermal cycling and vibration without degradation, a critical consideration in exhaust gasket applications where temperatures routinely exceed 700°F. The 1.380-inch square port specification ensures proper alignment with small block Chevy cylinder heads, providing a reliable seal across the entire port face. This gasket set is supplied as a pair, covering both sides of the engine—a standard requirement for proper exhaust sealing. The lightweight construction (0.33 lbs total) reflects the compact profile necessary for manifold installation without compromising seal integrity.

These gaskets are essential for small block Chevy engine builders, restoration specialists, and performance enthusiasts performing manifold replacement or engine rebuilds. Whether restoring a classic Chevy, upgrading exhaust systems, or resealing an aging engine, proper gasket selection prevents exhaust leaks that degrade fuel economy and increase emissions. FEL-PRO is recognized for meeting OEM specifications across diverse automotive gasket applications, making this product a direct replacement for original small block Chevy manifold sealing.

When selecting exhaust manifold gaskets for small block Chevrolet engines, port size compatibility is non-negotiable. The square port design accommodates the specific casting profile of SB Chevy cylinder heads, ensuring full face contact and eliminating the risk of partial seal that allows exhaust escape. Proper gasket installation requires clean mating surfaces and correct torque sequencing—factors that maximize the service life of this critical component and maintain engine performance over thousands of miles.