Alum SBC Exhaust Gasket Square Port

The Alum SBC Exhaust Gasket Square Port from MR. GASKET is a precision-engineered component designed for small-block Chevrolet engines requiring reliable cylinder head-to-manifold sealing. This gasket is ideal for both street and performance applications, ensuring a leak-free performance that is critical for maintaining proper exhaust scavenging and engine efficiency.

Constructed from high-quality aluminum, this square-port gasket is engineered to match the exact port geometry of SBC cylinder heads. This design ensures uniform compression and a superior seal across all combustion cycles, balancing thermal conductivity with gasket integrity to prevent blowout under sustained high-RPM operation.

Whether you're rebuilding a stock 350 or fine-tuning a high-output combination, this gasket is essential for any SBC engine with a square-port cylinder head configuration. Installation is straightforward—simply position it between the cylinder head and exhaust manifold, torque the fasteners in a cross pattern to manufacturer specifications, and verify proper seating for optimal performance.