The Exhaust Manifold in your Nissan Pathfinder collects hot exhaust gas from the engine's cylinder head and passes it through a single outlet to the rest of the exhaust system. The Exhaust Manifold is bolted to the cylinder head and connected to the exhaust pipe. Gaskets in this component seal the gases as they move to the catalytic converter, muffler, and tailpipe. Many assemblies are made from cast iron. Some manufacturers use steel or stainless steel tubing that is welded to a flange. Many assemblies have a heat shield to protect surrounding components from extreme heat. Some installations place an oxygen sensor port on the Exhaust Manifold, and in some vehicles, the catalytic converter is part of the manifold to simplify emissions control. Continuous thermal cycling can cause cracks in the component. A replacement Nissan part with the original equipment specification properly restores flow and limits the entrance of hazardous leaks into the Nissan Pathfinder cabin. This Exhaust Manifold is designed rigidly and helps the Nissan Pathfinder efficiently expel combustion gases to maintain balanced engine operation. Any Nissan Pathfinder with this Exhaust Manifold is an important emissions pathway.
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