Mr. Gasket Header Gasket 262-400 Gen I Small Square Ports (55-91 Corvette C1, C2, C3 & C4)Find parts that fit my vehicle

Performance Exhaust Gasket. The Mr. Gasket Mr. Gasket Header Gasket 262-400 Gen I Small Square Ports is designed to create a reliable seal between the engine head and exhaust headers, preventing leaks that can reduce engine efficiency and performance. It is intended for high-performance applications to ensure durability under extreme temperatures and pressures typical of street, drag race, and oval track conditions. Proper sealing enhances exhaust flow and overall engine operation.

Construction and Appearance. This gasket is constructed from a heavy-duty acrylic binder system that withstands high temperatures, measuring .062 inches thick. It features a high-temperature acrylic blend material known for excellent sealing and durability. The gasket’s texture is designed to conform reliably to square port shapes, and it can be trimmed if necessary for modified port applications.

Installation. Installation of this gasket is straightforward and typically does not require drilling or modifications to existing components. It is designed to fit standard Gen I small block Chevrolet square ports, enabling a clean and secure fit.

Warranty. This gasket includes a limited 90-day warranty against defects in materials and workmanship.

Application. Fits 55-91 Corvette C1, C2, C3 & C4 with the Gen I small block Chevrolet 262-400 engine featuring square exhaust ports.

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