911 Carrera 4 Cabriolet (996) F6-3.4L (1999)
/f6-3.4l/Page-418008.png)
The period of validity is between 2 and 3 years. The expiration date of the approval is given in the last column in the list shown.
Once this validity period has elapsed, the approval in question is revoked unless an extension is requested by the relevant manufacturer.
