GM 7.4L Intake Manifold Gasket Set | Fel-Pro 17340 Fel-Pro marine grade intake gasket set fits GM Mark IV 454 cu. in. marine engines. For GM 7.4L 454 CID Gen 4 (IV) marine engines used up to 1991 Includes intake manifold side gaskets, intake manifold end seals and distributor mounting gasket Marine grade Replaces Crusader RM0200 Replaces Mercury 27-8M0050224 Replaces Pleasurecraft Marine RM0200