Cometic Gasket Ford 5.4/5.8L Modular V8 .030" MLS Exhaust Manifold Gasket Set, Shelby GT500 Only 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. Exhaust systems are a great way to enhance the looks, sounds, and performance of your vehicle. Exhaust leaks can be extremely annoying. Keep your vehicle's exhaust sounding good by replacing its faulty exhaust gaskets with some new ones. Manufacturer: Cometic Gasket Product Name: CG Exhaust.