Fel-Pro Intake Manifold Gaskets Chev 5.3L 6.0L 2004 - 2012 # MS96587 Intake Manifold Gaskets, Replacement, Cathedral Port Style, Buick, Cadillac, Chevrolet, GMC, Hummer, Isuzu, Saab, Workhorse, V8, Pair Port Style: Cathedral Upper Intake Manifold Plenum Gasket Included: No Quantity: Sold as a pair. Fel-Pro Intake Manifold Gaskets Fel-Pro intake manifold gaskets are designed to be replacements for stock-type intake gaskets. This means they're ideal for stock rebuilds, as well as mild performance engines. The seals are available in a variety of configurations for fitment on hundreds of engine applications.