Our gasket is made with a Multi Layer Steel construction, similar to the OEM gasket. We feature a durable stainless fire ring design to promote sealing against the flange surface. Keeping your exhaust gases inside the manifold, right were they need to be. Specs: Thickness: 1.5mm Layers: 5 OEM Part Number: 44022AA180 Thickness: 1.3mm Layers: 5
