The Edelbrock intake gaskets #7242 for 1958–1965 348/409 "W-Series" small-port Chevrolet engines are built to promote optimum flow and a durable seal. MP-2N Micropore construction avoids solvents and yields a synthetic fiber composite that recovers under load, conforming to sealing surfaces with less flange pressure. A nitrile bead around each port improves sealing for small-port W-Series applications.
Edelbrock Intake Gaskets Chevrolet 348/409 Inwin for Small Port Cylinder Heads