I have been searching for a k and n filter, or green filter for ages, no body seems to list them for 1.9 tdi 2006

does anybody know where to get them, or what other VW car uses the same size filter

thanks

Pipercross and K&n sell them, listed usually for Golf V, pipercross may be better as it's dry not oily.

Do they make any difference to the 1.9 tdi engine?