Exhaust manifold / catalytic converter unit

Description and Operation Exhaust manifold / catalytic converter unit The exhaust manifold and the catalytic converter form one unit. The distance between the exhaust manifold and the catalytic converter is reduced because of this. This causes the catalytic converter to heat up faster. Part casting - exhaust manifold / catalytic converter unit   Item Description 1 Gray cast iron - exhaust manifold and catalytic converter outlet 2 Exhaust manifold heat shield 3 Catalytic converter Some parts of the exhaust manifold/catalytic converter unit are made of gray cast iron. Gray cast iron can absorb vibrations very well and dampens them because of its weight. Because of this, engine noise emissions could be reduced. Front and final mufflers The 1.6L engine is equipped with a front muffler to further reduce noise. Repair note Sealant must never be used upstream of the catalytic converter. Exhaust flexible pipes are very fragile and must not be subjected to any load. They must be secured against twisting and bending during any work on the exhaust system. Stresses in the exhaust system cause additional loads and possible formation of cracks in components. Care must therefore be taken during installation that components are always seated without any tension.