Brisk Silver Racing Spark Plugs (1 step colder for modified boost). These plugs work well with Stage 2 engine tunes and K04 turbo upgrades. Sold each.
Fitment:
Audi A4 1.8T 1997-2005
VW Golf/GTI/Jetta 1.8T 1999-2005
VW Passat/Beetle 1.8T 1999-2005