Good tip, thanks!! I take a look from another 4L from 1991 and they have the same headrest..Now i need find one to buy. THeadrest looks like ours from a Slovenian-built 1990 GTL.
Note that the distance between the 'prongs' or 'legs' (and their diameter) might be different to the 'soft' type.
PetakCan you point me where you bought it.
Mine is also leaking and need to find replacement.