Mercury - Quicksilver Intake Manifold Gasket Set For MerCruiser 7.4L & 8.2L MPI Engines 805522A1. Overview. Keeping a big-block MerCruiser sealed tight takes the right parts, and the Mercury Marine 805522A1 Quicksilver Intake Manifold Gasket Set delivers exactly that. Made for 1996-2001 MerCruiser 7.4L and 8.2L MPI inboard and sterndrive engines, this eight-piece set is built to handle marine-grade heat, vibration, and pressure without giving up its seal. Whether you're rebuilding, refreshing, o