The purpose of this item is to seal the exhaust to the cylinder head, ensuring that exhaust flows through the catalytic converter. What is the item?

Answer Exhaust Manifold Gaskets

An exhaust manifold gasket is likely made of embossed steel and sits between the exhaust manifold and the cylinder head. When working properly, these parts seal the connection, keeping the exhaust within the system where it is pushed through to the catalytic converter for treatment.

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