COMETIC MLS (Multi-Layer Steel) Exhaust Gaskets are designed for extreme cylinder pressures. MLS Exhaust Manifold Gaskets maintain a torque set and resist corrosion. They will not burn through or push out. MLS Exhaust Manifold Gaskets withstand different combinations of cylinder head and exhaust manifold materials. No sealants are required. PartNumber : cgC5805-030 Description : Exhaust Manifold Gasket; Pair Engine : Ford 5.4L Modular V8 2007+Up (Mustang Shelby) Thickness : .030" Thickness : .030in Add-On Part : NA Title : C5805-030 - Cometic Gaskets - .030in. MLS Exhaust Manifold Gaskets. Pair 2007-2012 Ford Mustang Shelby GT500 V8.5409cc Exhaust, Mufflers & Tips::Exhaust Gaskets 2008-2009 Ford Mustang Shelby GT500KR V8.5409cc Exhaust, Mufflers & Tips::Exhaust Gaskets