Patriot Exhaust 66011 Seal-4-Good Small Block Chevy Round Port Header Gaskets

Protect your small block Chevy exhaust system with Patriot Exhaust 66011 Seal-4-Good header and manifold gaskets. Designed for applications using 1.500-inch round exhaust ports, this matched pair provides a dependable seal between the cylinder head and exhaust header, helping reduce leaks and maintain consistent exhaust performance. The gaskets are engineered for enthusiasts, builders, and professional installers who need reliable fitment for compatible SBC applications.
Constructed from multi-layered aluminum, these Patriot Exhaust gaskets provide durable sealing performance while accommodating the heat and pressure conditions found in performance exhaust systems. The layered design helps support a secure seal across the mating surfaces, making the 66011 a practical choice for header installations, replacement projects, and engine upgrades. Verify the cylinder-head and header port configuration before installation to ensure proper compatibility.
Each package includes a pair of Seal-4-Good gaskets for convenient installation on both sides of the engine. The compact gasket profile is designed for 1.500-inch round ports and is intended for small block Chevy applications. Patriot Exhaust part number 66011 delivers a focused replacement solution for maintaining exhaust integrity without unnecessary complexity.

Features:

• Application: Designed for compatible small block Chevy exhaust header and manifold installations

• Port Shape: 1.500-inch round exhaust port configuration

• Material: Multi-layered aluminum construction for durable sealing performance

• Quantity: Includes a matched pair of header gaskets

• Brand: Patriot Exhaust Seal-4-Good series

• Part Number: 66011