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Robust, long-lasting and flexible solutions
Reliable compensation of mounting tolerances and engine motions to meet strict safety requirements.
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Construction / Agricultural machinery

Aside from simple decoupling elements, curved line assemblies with both rigid and flexible components, as well as gas-tight elements and assemblies such as corrugated hoses or metal bellows, are used.

Off-Highway applications

An overview of our products for trucks, buses and transporters

Witzenmann is the world's leading manufacturer of flexible and rigid pipework components for classic combustion engines (diesel, gas and dual fuel drives). By continuously developing our products, we help to further reduce CO2 emissions.

Upstream Turbocharger Automotive Components
Upstream of the turbocharger

A wide variety of flexible elements, fitted with customer-specific connections, are used before the turbo charger to absorb heat expansions and decouple engine movements and vibrations.
Such as

  • Exhaust gas ducts
  • Ducts in the manifold area
  • Exhaust gas recirculation pipe without microfilter
Product overview for vehicle parts
Downstream Turbocharger Automotive Components
Downstream of the turbocharger

Decoupling elements in the exhaust gas range are temperature and corrosion resistant. Depending on the application, they will be used with or without insulation. Their applications lie in thermo-mechanics (decoupling of vibrations and heat expansions), compensating for mounting inaccuracies or as special elements for dampening structure-borne noise/sound.

Product overview for vehicle parts
Fluid Oil systems oil water cooling circuit
Fluid systems

Pipeline systems for liquid circuits such as water, oil and coolant circuits are mostly semi-flexible bellows/smooth-bore tube solutions or custom-fit curved stainless steel pipelines, precisely tailored to the cramped installations conditions close to the engine. Alongside traditional combustion engines, these air-tight pipe systems are increasingly used in E-mobility or hydrogen applications.

Product overview for vehicle parts
New Mobility Application Fuel cell
Applications for new energy vehicles

A team of specialized engineers from our prototype production and test departments is developing trend-setting New Mobility product solutions in cooperation with our customers. For example electromobility, hydrogen or fuel cell technology. Here we draw on our many years of experience and knowledge of the market.

More on New Mobility products
Other Vehicle Parts Off Highway Image Text
Special Applications

As a supplier to virtually every notable commercial vehicle manufacturer, Witzenmann possesses a vast body of practical knowledge. This serves as the basis for the development of precise special solutions, such as:

  • conduits for pneumatic and fluid systems
  • pressure pipe sheathing
  • exhaust gas consolidation
  • pipes for special media such as CO2
Product overview for vehicle parts in the exhaust system

An overview of our products for construction / agricultural machinery

Construction and agricultural machinery Close to the engine Image Text
Near-engine Components

Flexible pipe elements are used at the engine to absorb thermal expansion, vibrations and to compensate for installation tolerances.

  • expansion elements
  • exhaust manifolds
  • charge air lines
  • oil / exhaust gas re-circulation pipes
Product overview for piping and piping systems
Exhaust System Image Text
Automotive Components in the Exhaust System

Decoupling elements are used in the connecting line between the engine and the exhaust post-treatment; these are configured as metal bellows or stripwound hoses. They are used for decoupling movements of mechanical components, expansion and vibration, as well as for compensating for installation tolerances.

Product overview for engine-related components
Other Vehicle Parts Off Highway Image Text
Special Applications

As a supplier to virtually every notable commercial vehicle manufacturer, Witzenmann possesses a vast body of practical knowledge. This serves as the basis for the development of precise special solutions, such as:

  • conduits for pneumatic and fluid systems
  • pressure pipe sheathing
  • exhaust gas consolidation
  • pipes for special media such as CO2
Product overview for vehicle parts in the exhaust system

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Additional questions

Nothing beats direct contact. We are happy to take the time for a personal discussion with you to answer your questions on an individual basis.
Please send us an inquiry using the contact form, and we will immediately get back to you.