Nissan Navara D40 YD25 2.5L. Nissan Pathfinder R51 YD25 2.5L. Nissan Navara D22 YD25 2.5L. This Is A MLS (Multi-Layer Steel) Gasket That Goes Between The Cylinder Head And The Exhaust Manifold. These High Quality, Premium Gaskets Are Constructed From Stainless Steel And Feature Multi-Layers Of Durability And Reliability.