IEC is your reliable partner when it comes to motor components!



Engine valves, valve guides, valve seat inserts, valve springs, valve cotters, valve spring retainers, valve rotators


Pistons, piston rings, cylinder liners, pins, crankshafts, connecting rods, bearing shells


Camshafts, valve/bucket tappets, hydraulic compensation elements/hydraulic tappets, rocker arms/drag levers, roller cam followers, pushrods, shims, thrust pads


Cylinder heads, ready-to-install cylinder heads (complete), prechambers, crankcases, short blocks


Seals, cylinder head gaskets, seal kits, sealing rings


Nozzle inserts (injectors), nozzle holder assemblies, injection pump components




  • Development and production according to sample components
  • Development and production according to drawings
  • Development and production according to specifications


IEC offers a particularly extensive catalogue.


Concept from the design to the series

  • Conceptual design of your system on the basis of the motor data according to customer requirements (technical specifications) (power, speed, fuel type, service life, etc.)
  • Simulation/component calculation and strength analyses including fatigue strength test
  • Sample production and testing
  • Validation and verification of the samples with measures of optimization
  • Production and testing of pilot series components and prototypes up to series release
  • Material analysis and testing


Optimization in critical applications

  • Industrial/marine engines under high loads from heavy fuel or poor fuel quality, high temperatures and influence of sea air
  • Biogas/landfill gas engines in CHPs
  • Car engines under high loads such as LPG-powered turbo engines
  • Motorsport applications


  • Replacement of expensive material combinations with cost-optimized solutions having similar behaviour and comparable stability
  • New design of existing systems, for example, in marine engines to replace expensive butterfly valves with systems equipped with valve rotators
  • Development of special materials to avoid expensive protected raw materials


The quality of the components start with the development

All components at IEC are conceived and designed by experienced engineers.

The development is complemented by calculations with a modern software, FEM analyses and simulations as well as tests.

Using the best material is a guarantee for producing the best components

IEC only uses materials from the best manufacturers. IEC develops its own materials for special applications.

Enjoy excellent quality thanks to local production

In modern production facilities in Germany and Europe you can rely on the highest precision and on compliance with local standards and tolerances.

Testing and quality assurance

IEC meets the highest customer requirements. All components are completely checked according to carefully prepared test plans and the results are documented according to customer specifications.

Do you need special tests, certificates or documentation? Feel free to tell us, we will be pleased to include it in the production and testing process.

Testing of the materials used

At IEC all raw materials are carefully tested. The comparison between the factory certificates and the actual values registered through measurements and analyses guarantees that only proper and faultless materials are used. The required specifications can also be checked with metallographic tests (structure) in our own laboratory.

Right: Material analysis by means of X-ray fluorescence, factory certification of the composition and granulation of a welding powder.

Crack testing

We use dye penetrant inspection (DPI) to reveal cracks that are not visible to the eye. The non-destructive testing guarantees totally crack-free components.

The magnetic particle testing also reveals micro-cracks under UV light and thus guarantees totally crack-free components.

X-ray inspection

Pores or cracks can be detected through X-ray inspections. Both 2D and 3D X-rays (computer tomography) are used to ensure perfect quality of the components.

Right: X-ray inspection of a friction weld and seat armouring

Ultrasonic testing

Components can also be tested by means of completely non-destructive ultrasound. Ultrasound allows us to reveal defects in seat armouring or similar components.


The microstructure represents an essential feature of the material properties. It is therefore utterly necessary to analyse and evaluate the structure of the components in the micrograph.

In the in-house metallographic laboratory, components are analysed microscopically, for example to validate and document the correct sequence of heat treatments or other processes.

Right: Microscopic analysis of the connection of a seat armouring, structure of a seat armouring

IEC stands for flexible solutions

Does your project include optimizations or other kinds of adjustment?

Is your project time-sensitive?

IEC is ready to support you at short notice.

IEC stands for sustainability

Ethics and environmental compatibility are actively implemented at IEC.

Fair wages, investments in education and social security as well as environmental and nature protection are the basis of all activities at IEC.