WUZETEM guarantees high quality of produced parts. It’s achieved thanks to use of high quality material from renowned manufacturers and modern and innovative manufacturing technologies, all in accordance with ISO 9001 standards.

We guarantee that our products are free of manufacturing and material faults that would cause improper work under normal working conditions and handling.

Our commitment under the foregoing warranty is limited to replacement of our products to ones free from defects or repair in our factory, for one year since installation on the engine and no later than 18 months from the date of sale from factory

This warranty does not cover damage resulting from improper handling and operation and in particular:

  1. Nozzles
    • damage to the conical seat by impurities introduced during assembly or coming from the fuel,
    • seizure of the needle in the needle hole being the result of overtightning of the nut or debris,
    • Not replacing thermal seals of the engine (pintle nozzles),
    • Not replacing thermal seals of the engine (pintle nozzles),
    • Repairs not carried out properly, in accordance with the principles.
  2. Pumping elements
    • damage to the edge at the head of the piston (clumping) caused by incorrect handling,
    • wear of the surface of the piston and the cylinder lying opposite to the fuel holes due to impurities from the fuel,
    • piston seizure caused by exceeding the maximum permissible torque on the filler or contamination of fuel,
    • Repairs not carried out properly, in accordance with the principles.
  3. Injectors
    • damage to the assembly parts, especially with threads,
    • Replaced parts and assemblies, deregulation, repairs not carried out properly in accordance with the principles,
    • Nozzle damage due to impurities.
  4. Injection and feed pumps
    • Damage to the external parts,
    • dysregulation, repairs improperly performed, not in accordance with the principles,
    • damage cause by fuel pollution (working with ineffective filter).