Core charge can only be refunded, when within two weeks:
- the old part is sent to us on your (customer´s) cost and
- the old part is not broken or undissected and
- the original box from the remanufactured part is used for return
  (Box must be clean!) and
- copy of your invoice and filled out "Rücksendeschein" (on back of invoice) is included with the return