The Bully Dog 85251 Exhaust Manifold Gasket Kit features reinforced graphite gaskets have a stainless steel inner eyelet that prevents exhaust blow by, increases the overall strength of the gasket, prevents high velocity erosion, and damage from shipping. The reinforced graphite has good compressibility to provide a constant seal while able to withstand high temperatures. The exhaust manifold gasket is designed so gaskets can be swapped out without completely removing the manifold. The kit includes (6) exhaust manifold gaskets. Features: Reinforced Graphite Gaskets Can Be Installed Without Removing Manifold Replaces OEM Part #: 138-4611 Caterpillar Applications: 1994-2004 14.6L 3406E 1989-2003 15.8L 3406EÂ 1997-2003 12.0L C-12 1999-2004 14.6L C-15 2005-2010 15.2L C-15 ACERTÂ 1999-2003 15.8L C-16Â Not available for sale in the state of California Click here to read Emissions Notice.