Hi guys, i've tried a search, but for some reason i can't use that facility. I appreciate that the question will have been asked before. SO............
I'm going to remove my airbox and go open cone (Green or Jetex) but i could do with knowing the size of the neck of the filter required. I'll be connecting it to the air mass sensor tube.
It's a mk5 astra 1.8 16valve
Thanks in advance,