Exhaust Gaskets BBC 2-5/32 Round Port

The Remflex Exhaust Gaskets BBC 2-5/32 Round Port (Model 2013) is a premium big block Chevy header and manifold gasket engineered for high-temperature sealing in performance and street applications. This pair of graphite gaskets features the precise 2.156-inch round port specification required for BBC cylinder head compatibility, delivering reliable leak prevention where factory gaskets fail under sustained heat cycling.

Graphite composition provides superior thermal stability compared to conventional fiber gaskets, resisting degradation under the extreme temperatures generated at the exhaust port interface. The 2-5/32 dimension matches the critical bore tolerances of BBC heads, ensuring proper clamping load distribution across the gasket face. Each pair handles both cylinder banks, making this a complete solution for header or manifold installation. The gasket profile maintains dimensional integrity through repeated thermal cycles—critical for street engines experiencing cold starts and load variations, as well as track-duty applications where sustained high-EGT operation is standard.

This gasket set is essential for any big block Chevy builder addressing exhaust leak issues, whether during initial header installation or as a preventive replacement during an engine refresh. Users rebuilding stock 454 and 427 platforms, as well as those installing aftermarket headers on vintage trucks and performance vehicles, rely on proper BBC gasket specification to avoid exhaust manifold fastener failure and cylinder head warpage caused by gas blowby. Remflex gaskets are engineered to meet the demands of both naturally aspirated and boosted applications where gasket reliability directly impacts engine longevity.