CAR Middle exhaust / central silencer

Middle silencer: common defects and their signs

  1. Corrosion or mechanical damages.
    • Unnatural rattling sound coming from the component.
    • Smell of exhaust gases in the passenger compartment.
  2. Soiling.
    • Engine power is significantly lowered.
    • Increased noise level increased from exhaust gas emission.
    • Foreign sounds in the component area.
  3. Connection failure.
    • Intense vibrations during driving.
    • Smell of exhaust gases in the passenger compartment during driving.
    • Knocking is heard at engine start.

How to replace middle silencer?

If the middle silencer is out of order it is not recommended to repair it. Sometimes service stations offer repair works which include component cutting, locating the defect and further welding of the detail. But there’s no guarantee that the component would retain correct geometry after such repair and further function in the car.

It is preferable to replace a faulty middle silencer. If you have the experience, you can do this yourself. To do this, perform the following actions:

  1. Set the car at a servicing pit or on a ramp and fix its position.
  2. Remove the engine protection plate.
  3. Unscrew fastening bolts of the middle silencer. It is recommended to apply corrosion preventing agent to them.
  4. Loosen the clamps which fixate the component to the exhaust manifold system. Remove the sealing element.
  5. Unscrew the nuts which fixate the component to the neutraliser or the exhaust manifold according to the car model.
  6. Demount the broken component.
  7. Install a new middle silencer and reassemble all the elements.

Remember that replacement process for cars of different brands will differ. That is why you should study technical documentation. It is recommended to replace seals, connection bolts and nuts together with the middle silencer. If you have no appropriate skills, it is better to turn to a service station for replacement.

Middle exhaust / central silencer Information

Resonator is a type of silences and it is often called the centre silencer, as it is located in the middle part of the exhaust system. The principle of its operation is the use of closed cavities adjacent to the pipeline and lots of holes connected to it. In most cases, there are two not equal capacities in the body, separated by a remote partition. Each hole, including a closed cavity is a resonator that excites vibration by natural frequency.

The distribution terms of the resonance frequency are changing dramatically. So, it is effectively damped by the friction of the gas particles in the hole. This type of silences effectively suppresses low frequencies. Also it does not create a significant resistance to gas because it does not reduce the section.

Most often it is used as a centre silencer.

Resonator of the exhaust system, as well as any part of the vehicle silencer, suffers heavy loads due to a very high temperature, which is an aggressive environment together with the external action. It is clear that any aggressive environment can destroy the integrity of the centre silencer. Respectively this requires necessary repair services.

If the resonator in your car failed, do not upset. There is no need immediately to drive to a service centre or specialty shop. Resonator is not a rear part and you can easily find it in our online shop. You will save your time and money. Also, in our online shop it is possible to order fuel and oil filters, mirrors and water pumps.

Middle exhaust / central silencer: Bestsellers

-21%
POLMO Middle Silencer
Article № : 01.62
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£ 24,88**
£ 19,66
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  • Fitting Position: Centre
  • Catalytic Converter Type: for vehicles with catalytic converter
  • Condition: New

OEM-Number

8A 02 5 340 9F

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WALKER Middle Silencer
Article № : 01010
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  • Length [mm]: 930
  • Technical Information Number: 52
  • Weight [kg]: 3,025
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OEM-Number

AY 18 2 0

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POLMO Middle Silencer
Article № : 24.34
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£ 24,48**
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OEM-Number

6Q 02 5 320 9

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POLMO Middle Silencer
Article № : 01.104
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£ 24,49**
£ 19,35
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  • Fitting Position: Centre, Middle Silencer
  • Catalytic Converter Type: for vehicles with catalytic converter
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OEM-Number

1J 02 5 320 9B

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POLMO Middle Silencer
Article № : 01.106
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£ 23,21**
£ 18,34
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  • Fitting Position: Centre
  • Catalytic Converter Type: for vehicles with catalytic converter
  • Condition: New

OEM-Number

1J 02 5 320 9C

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BOSAL Middle Silencer
Article № : 233-577
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OEM-Number

7H 02 5 320 9

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POLMO Middle Silencer
Article № : 30.233
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£ 24,88**
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OEM-Number

1J 02 5 320 9

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BOSAL Middle Silencer
Article № : 233-323
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£ 37,20**
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OEM-Number

6N 02 5 320 9L

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