Victor Reinz Black Diamond Coated 20mm Engine Cylinder Head Gasket SET for Ford 2006 - 2007 6.0L (Mahle 54579A) Sold as qty of 2. Must order 2 for both sides. This is the replacement model for the 54579. Constructed of (5) five stainless steel layers Utilizing patented integrated push rod locators Coated with a Victor Reinz proprietary fluoroelastomer (rubber) coating