Exhaust system fasteners and joints: replacement and selection

When and why exhaust system fasteners and joints need replacement

These components have no specified lifetime expectancy. Sealing rings, in particular, are replaced when they are burnt through or corroded, whereas flange gaskets and exhaust mounts – if cracks and deformations appear. Also mechanical damages of the fastening elements are possible. Usually, the silencer bracket may tear off.

Corrosion of metal components occurs due to constant influence of moisture. Moreover, the exhaust system elements often break down if the car is used on rough roads. Burning-out of some parts is caused by their mounting location and constant impact of high temperature.

Defect signs depend on the fact, which exact part is faulty. For example, burning of the sealing ring should be suspected if unusual sound from the exhaust system appears during engine operation. Presence of exhaust gases smell in the cabin is possible when the flange gasket is damaged. If the silencer mounts are torn off, so as a result of poor fixation interrupted knocking can be heard from the car bottom.

If during replacement of the exhaust system fasteners and joints bolts are used, then opt for those with anti-corrosion coating.