Marine Printoseal Intake Manifold Gasket Set 17341 FE17341 Suit BB Chev 454-502 Gen IV-V-VI H.O Rectangle Port(Exc EFI) BBC MARINE INTAKE GASKET SET Fel-Pro replacement gaskets bring Fel-Pro's world famous quality and reliability to standard passenger car applications. These gaskets are suitable for stock and mild performance engines but are not recommended for high horsepower and high compression race engines which require the extra durability and features found in Fel-Pro's performance gasket range.