Exhaust components

Products and components for exhaust applications

Our products, components and systems transport liquid and gaseous substances in many exhaust applications ensuring that drivers arrive at their destination safely and in comfort while protecting the environment.

With BOA components, manufacturers meet continuously stricter emission requirements.

Modern automotive manufacturing requires exhaust systems with gastight flexible connecting elements, which provide high endurance and corrosion resistance as well as a maximum vibration decoupling performance in order to increase vehicle comfort.

Product applications:

  • Highly Flexible Metal Hoses
    For compensation of large axial, angular and lateral motion as well as for decoupling of engine vibration and high acoustic comfort
  • Self-supporting Decoupling Joint
    A robust and cost-effective alternative for compensation of angular motion combined with good decoupling performance of engine vibration
  • Thermal Compensators
    For compensation of stresses caused by varying thermal expansion rates
  • High-Frequency Damper “HFD”
    For damping high-frequency vibration after the turbo-charger

We are one of the market leaders for exhaust system decoupling and have developed a state of the art knowledge base, engineering tools, and testing systems over many years that allow us to quickly produce solutions specifically designed for the automotive industry.

Products for Exhaust Systems

Flexible Hoses

The EnduroFlex® is a highly flexible metal hose designed to fit all common exhaust system pipe diameters.

Flexible Hose FHA   Flexible Hose SG type

Properties include:

  • Compensation of large axial, angular and/or lateral motion
  • Best decoupling of engine vibration
  • Horizontal or vertical mounting orientation
    Ends are free of lubricants and designed for accurate and smokeless welding into the exhaust system
  • 100% tested and documented function and geometry
  • The function remains constant over the life of the vehicle

The SG type is a semi-self supporting design which may be a lower-cost alternative to self-supporting decoupling joints:

Properties include:

  • Compensation of angular and axial motion
  • Good decoupling of engine vibration
  • Compact and symmetrical design
  • Horizontal or vertical orientation – vertical when located near the exhaust manifold

Self-Supporting Decoupling Joints

We also offer a decoupling joint as a self-supporting device (with no hangers).

Self Supporting SE Self Supporting CE

It is highly gas-tight and corrosion-resistant for a long time period. Basic functions of the self-supporting decoupling joint are:

  • Decoupling engine motions
  • Suppressing system resonances

We design calculators and 6 DOF (degrees of freedom) validation provide our customers with a tailored and optimized product design according to their needs – reducing application size, weight and cost.

The SE is a low-cost decoupling joint that uses a circumferentially mounted stainless steel cable as the load support mechanism in place of the wire mesh element used in other designs.

Properties include:

  • Acceptance of angular motion
  • Very good decoupling of engine vibration
  • Compact and a rotationally symmetric design
  • Vertical mounting orientation
  • Can be flange mounted

The CE type is also a cost-reduced version. It has already proven its durability in several million vehicle applications.

Thermal Compensators

Auto Thermal Compensator

Our thermal compensators are used in tubular exhaust manifolds, down-pipes and crossover pipes and provide the following functions:

  • Compensation of stresses caused by varying thermal expansion rates.
  • Flexibility in the alignment of parts during installation.

High-Frequency Damper

High Frequancy Damper (HFD)

The high-frequency damper (HFD) dampens and prevents transmission of high-frequency vibrations within turbocharged exhaust structures, increasing the acoustic comfort of the vehicle.

It is very stiff and self-supporting and consists of special multi-layer bellows with a maximum of 5 corrugations, combined with a damper cushion which is installed on the inlet side of the damper.

How can we help you?

If you want any information or if you need any help? Just visit our online expert center. Here you find information on all our products or you can contact one of our engineers about your challenge. We will be glad to support you.

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