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Defective core return

Our exchange system means that the defective core must be returned intact to us after the new gearbox has been installed. If the defective core is not returned to us, we will charge a core fee. If the defect core is returned but has external damage we will invoice a part of the core fee


Mounting parts needed when installing a new gearbox are often still mounted on the defective core when it gets returned to us. We do not save these parts. The work of installing the new gearbox can be made difficult, impossible or unnecessarily costly if important mounting parts are missing. Therefore, return the defective core only when the new gearbox is installed and the vehicle is once again working.

Preparations before shipping

  • The return unit should be intact when we receive it, not disassembled.
  • Empty the return unit on oil. If the return unit is not emptied on oil and causes leakage during transport, you will be billed for the cleaning of the transport vehicle.
  • Clean the return unit roughly using a cloth. Do not use water.
  • Pack the return unit in the same packaging as the replacement unit arrived in.
    • Oilcloth and corrugated cardboard should be used as oil protection.
  • Remove old shipping notes from the packaging.

Book return shipping

  • Book return shipping through the form below.
    You can also call customer service on phone +46 300 - 742 20.
  • You will need the following information available:
  1. The order number or invoice number and postal code from the invoice address.
  2. The car’s mileage and symptoms (before action).
  3. Pickup address, name and phone number of the contact person at the location.
  4. A correct/functioning e-mail address.

*** NOTE! ***
You must supply us with the vehicle's meter reading and fault symptoms
(before action) in order for the warranty to be activated.

Shipping takes place with TNT, who will also send you consignment document by e-mail once return shipping has been booked.
  • Have not received any consignment documents?
    • It takes a couple of hours before the consigment documents are sent.
      Still missing? Check the trash in your e-mail inbox.
  • Please contact the TNT Customer Service on phone +46 20 - 96 09 60 in case of shipping problems, rebooking of shipping or if you have not received any consignment document. State customer number 73644 as reference.

At time of return shipping

NOTE! It is important that a copy of the consignment document gets signed by the driver and then saved by you. This copy is your receipt that the return core has been sent to us.

Hellsten Gears AB
Varbergsvägen 416
SE-439 73 Fjärås

+46 300 - 742 20