Trucks & Powertrain

Robustness. Reliability. Optimised customer support.

As a leading supplier of wiring systems, including engine harnesses, and associated components to truck and diesel engine manufacturers worldwide, we specialise in providing tailored product solutions. These have the robustness and reliability demanded by commercial vehicle applications. Our global footprint and key account management structure ensure that personal service and partnership support are always on hand – wherever and whenever it is required.

Specialised connector systems, custom designed components, innovative logistics solutions – all part of our full service supply capability and expertise in supplying the global truck and diesel engine markets. For example, our pre-formed harnesses are widely used in truck and engine applications. This approach provides complete protection for the harness from oil, diesel, water and salt as well as from thermal and mechanical stress. In addition, the defined form of the harness makes it easier to fit to the vehicle.

From the initial design studies to the safe installation of the final product, LEONI delivers the full package.


For further information please contact us.

More on us

Want to get to know us better? Have a look on our business profile and our visions.

Where we are?

Always close to you. Find our locations in Europe, Americas, Africa and Asia.