NO MORE P0420 CODE!
I'm not here to persuade any one to use OE parts from the factory, but when your faced with a part that is $1000 from VW and less than $200 aftermarket, I think you'll make the right decision. The cat was exactly the right fit for my MK 4 Jetta with the 2.0L AZG type motor. Be sure to know what motor type you have as there are 3-4 different types in these Jettas and some have 4 or 6 bolt flange configurations. The best part is my P0420 code never returned and I passed my AZ emissions!
I got mine a day early the box was in good condition all parts were there fit perfectly no adjusting necessary sounds terrific I get more throttle response and better fuel economy win win win I would highly recommend this brand and this site to any one looking for easy fast and effective thanks guys you did great I will be looking here for future projects