Thinner than stock. 1.880″ I.D. Viton. Used between manifold and cylinder head. All S&S manifolds require thinner than stock manifold the head seals to compensate for the larger S&S port diameter. Note: Thicker stock seals may damage S&S manifolds.
Thinner than stock. 1.880″ I.D. Viton. Used between manifold and cylinder head. All S&S manifolds require thinner than stock manifold the head seals to compensate for the larger S&S port diameter. Note: Thicker stock seals may damage S&S manifolds.