Intake Gasket Set - BBC

The FEL-PRO Intake Gasket Set for Big Block Chevy engines (part 1223-3) is a precision-engineered pair of composite intake manifold gaskets designed to seal the critical interface between intake manifold and cylinder head. At 0.06 inches thick with 2.063 x 2.79 inch rectangular port dimensions, this gasket set maintains proper compression and prevents vacuum leaks that degrade engine performance and fuel economy.

Composite construction delivers superior sealing integrity compared to traditional cork gaskets, with improved resistance to coolant and fuel degradation over extended service intervals. The dimensional precision of this FEL-PRO gasket set ensures consistent clamping load distribution across both ports, eliminating hot spots and uneven sealing that can lead to intake manifold warping. Proper gasket thickness is critical for BBC engines—too thin and sealing pressure drops; too thick and manifold bolt torque becomes insufficient. This 0.06-inch specification matches OEM requirements for Big Block Chevy applications.

This gasket set is essential for rebuilds, head gasket jobs, intake manifold replacement, or warranty restoration of Big Block Chevy engines used in street performance, marine, and industrial applications. FEL-PRO's engineering focus on composite gasket technology has made it the standard specification in professional engine shops and OEM supplier networks. Whether replacing failed original equipment or upgrading during a full engine refresh, this intake gasket set provides the seal integrity Big Block builds demand.

BBC intake manifold gaskets are not interchangeable across engine families—port size and bolt hole patterns vary significantly between big block and small block variants. This set is engineered specifically for big block applications; verify your manifold and cylinder head combination before installation to ensure proper fit and sealing performance.