Intake Gasket Set - Chevy 348/409

The Intake Gasket Set for Chevy 348/409 by Edelbrock is engineered for builders and restorers working on classic big-block Chevrolet engines that demand precise sealing at the intake manifold. Whether you're refreshing an original 348 or 409 with modern reliability or assembling a high-performance stroker, this gasket set provides the critical seal between your intake manifold and cylinder head that prevents coolant and oil weeping that plagues aging engines. This is the foundation gasket that separates your intake tract from the combustion chamber—get it wrong, and you'll chase leaks and overheating issues for years.

Edelbrock engineers this gasket set as a composite material construction, proven to handle the thermal cycling and pressure cycles inherent to W-series big-block engines. The 0.06-inch thickness is precisely calibrated to maintain proper port alignment while compressing to create a gas-tight seal under head bolt torque. Each gasket measures 2.5 by 1.31 inches at the rectangular port, matching OEM dimensions to ensure zero fitment surprises during installation. Composite construction resists fuel and coolant degradation far better than cork, holding its integrity across repeated heating and cooling cycles without deteriorating or developing pinhole leaks.

Mechanics and engine builders standardly specify this gasket set for GM W-series applications—348 and 409 platforms that span vintage Chevrolet muscle cars, trucks, and performance builds from the 1960s era through modern restorations. Installation is straightforward: torque cylinder head bolts to factory spec in the recommended sequence, and these gaskets will seal reliably without repeat failures. Keep a set on hand for any intake manifold removal job, whether you're diagnosing a coolant leak, upgrading to a performance intake, or performing a complete head gasket overhaul. Pair this with fresh head gaskets and proper torque procedure for bulletproof bottom-end reliability.