This exhaust manifold gasket seals the joint between the exhaust manifold and the cylinder head on the host tractor. It prevents exhaust gas from escaping at the connection, which maintains backpressure and prevents hot gases from damaging nearby components or entering the engine bay. A failed gasket produces a ticking or puffing sound under load and can cause a drop in engine performance. As an original AGCO part, the gasket is formed from a material that matches the thermal expansion characteristics of the manifold and head, so it maintains a consistent seal through heat cycles. On installation, ensure both mating surfaces are clean and flat; replace the gasket whenever the manifold is removed.