This intake manifold gasket set is designed for GM LS3 engines and replaces the factory intake manifold gaskets used between the intake manifold and cylinder heads. It ensures a proper seal to maintain intake air and coolant integrity, preventing vacuum leaks, coolant intrusion, or unmetered air entry. The gasket set is suitable for maintenance, rebuilds, or intake manifold replacement or upgrade applications on LS3-style engines.

Brian Tooley Racing BTR56623 Features:

• Fitment: GM LS3 engines (compatible with rectangular-port LS-style heads)
• Seals intake manifold to cylinder heads for proper airflow and sealing integrity
• Multi-port rubber gasket design for consistent sealing across all intake runners
• Direct-fit design — engineered to match stock or aftermarket intake manifolds for LS3 applications
• Suitable for stock maintenance, rebuilds, or intake manifold upgrades

Brian Tooley Racing BTR56623 Includes:

• Full set of intake-manifold gaskets required for one LS3 intake manifold installation

Brian Tooley Racing BTR56623 Notes:

• Sold as a set — one set required per intake manifold installation
• Recommended to replace intake gaskets whenever intake manifold is removed to ensure proper sealing and performance