Patriot Exhaust 66124 Seal-4-Good Big Block Chevy Exhaust Header Gaskets, Rectangle Port, Pair

Patriot Exhaust Seal-4-Good exhaust header and manifold gaskets are designed for Big Block Chevy applications using stock-size rectangular exhaust ports. Part number 66124 provides a dependable sealing surface between the cylinder head and exhaust header or manifold, helping support proper exhaust system performance and reduce the risk of leaks at the flange connection.
Constructed from multi-layered aluminum, these gaskets combine durability with the flexibility needed to conform to compatible mating surfaces. The rectangular port design measures 1.920 by 1.880 inches and is suited for stock-port Big Block Chevy cylinder heads and compatible exhaust components. Each gasket is engineered for use in demanding underhood environments where heat, vibration, and repeated thermal cycling can challenge lesser sealing materials.
This Patriot Exhaust gasket set includes a pair of gaskets, making it convenient to service both sides of a V8 engine during header or manifold installation. Verify port shape, application compatibility, and flange configuration before installation to ensure the correct fit. The Seal-4-Good construction helps provide a reliable replacement sealing solution for street, performance, and restoration projects requiring stock-port Big Block Chevy coverage.

Features:

• Brand: Patriot Exhaust

• Part Number: 66124

• Application: Big Block Chevy stock-port cylinder heads

• Gasket Type: Exhaust header and manifold gasket

• Port Shape: Rectangle

• Port Size: 1.920 by 1.880 inches

• Construction: Multi-layered aluminum

• Quantity: Pair

• Use: Replacement sealing solution for compatible headers and exhaust manifolds