Exhaust Manifold

Used & Rebuilt Exhaust Manifold

Exhaust Manifold

What is a Exhaust Manifold?

Exhaust manifold are typically simple cast iron or stainless steel units which collects all the exhaust gases from multiple cylinders in the vehicle and deliver it to the exhaust pipe. As the first component in the exhaust system, the exhaust manifold collects all the exhaust fumes released from the engine cylinders and directs them into the catalytic converter. In turbocharged engines, the turbocharger will be downstream of the exhaust manifold. The design of the exhaust manifold and the pipes connected to it is of great significance to the performance and torque characteristics of the engine.

When individual exhausts tracts are merged into one, it ensures that pulsations or fluctuating pressure surges given off by a certain cylinder does not prevent exhaust fumes being released into another cylinder. The waves of negative pressure will also promote the flow of exhaust fumes out of the cylinders.

Signs Of A Failing Exhaust Manifold

The exhaust manifold is generally made using a solid piece of metal, but it’s not impervious to damage. If there is a leak in the exhaust manifold, you will be able notice some of the following signs –

1.Burning Smells – If you start smelling an unpleasant smell of burning plastic or rubber upon lifting the hood after a drive, this is an indication of a malfunctioning exhaust manifold. This is because damaged manifolds don’t transfer heat like they are designed to, and this will result in gasket damage and compounding exhaust leaks.

2.Performance Problems – Another commonly observed symptom of exhaust manifold damage is slow or sudden loss of power during acceleration. You may also notice that your vehicle doesn’t take off from a stop sign like it used to before. This is because of a loose manifold or one with a damaged gasket having an adverse effect on acceleration power.

3.High Fuel Use – If the exhaust manifold is damaged and the exhaust doesn’t stay pressured properly, this will lead to a drop in the fuel efficiency. Not only will this cause the vehicle to burn more fuel for the same distance, but this will also cause a drop in power.

4.Loud Exhaust Noise – A hole or a lost gasket between any parts of the exhaust system will lead to a louder vehicle due to the escaping sound and pressure. However, manifold damage will create a particular hissing or tapping sound. These noises indicate that the vehicle’s engine isn’t holding proper combustion anymore and that the engine needs to be looked at by a mechanic.

5.Visible Damage – If you notice any crack in the metal or any other visible damage to the sides of the manifold, it could be a possible indication of a faulty exhaust manifold and needs to be checked out by a technician.


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Mainland Auto Parts sells Used and Rebuilt Exhaust Manifold for all major makes and model including

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