Intake manifold has good ventilation, ventilation rods, the material is excellent and easy to bend. 7 car exhaust bellows also known as automobile exhaust pipe hose, it installed in the engine exhaust manifold and muffler in the exhaust pipe between the entire exhaust system with flexible connectivity, thereby reducing vibration and noise played, convenient install exhaust muffler system and the extension of the role of life. It is mainly used for light vehicles, mini-cars and buses, and its structure is reviewed, double-layer corrugated steel mesh tube sets, the two ends of the jacket Straight Edge Ring structure, in order to better effect Muffler, internal bellows expansion joints can be allocated or net sets. Material: SUS304 stainless steel is the main material, card kits and materials can be taken over stainless steel or aluminum for steel.