GMC Sierra Exhaust Clamps, Hangers, Gaskets & Seals

The GMC Sierra exhaust gasket serves as a sealed joint between the exhaust manifold, which combines the gases from all of the engine's cylinders, and the exhaust pipe where they are released. It creates an airtight joint between these two components, and this is important when it comes to preserving your engine's overall health. Like any other kind of gasket, exhaust gaskets can wear out over time, and when this happens you need to get a replacement fast.

Exhaust gaskets are round, and often referred to casually as 'donuts.' They tend to have beveled edges and a smooth, flat surface inside the ring, which allows them to clasp around the components they link together – i.e. the manifold and exhaust pipe – creating an air tight grip. Due to the high temperatures they have to endure, they are usually made of fireproof materials, including asbestos. They are also known as exhaust flange gaskets, and like other automotive gaskets, they vary in size depending on the vehicle.

The exhaust gasket on you car can wear out and loosen over time, and if this happens, you need to replace it as soon as possible because it can lead to gas leakages, cause blown exhaust valves, and lead to other damage to your engine. A damaged exhaust gasket that isn't doing its job properly can also lead to degraded engine performance, and will prevent your car passing most inspections, so you really should get a replacement at the first sign that your exhaust gasket is on its way out.