Want to modify or upgrade your 2002-2004 Audi A4 with aftermarket catalytic converter universal? At OGTuners.com we have a great selection of aftermarket performance parts for your Audi A4. We have 6 catalytic converter universal parts available in our store with free shipping to the Continental US.
Magnaflow Universal Converter
 $197.00 51234MagnaFlow Conv Univ 2in In/Out Ctr/Ctr Round 9in Body L x 5.125in W x 13in Overall L Single O2 Port IN STOCK (5+) SHIPS FROM MANUFACTURER (Last checked: 12/30/2025) Shipping times vary by Manufacturer (Can take days or weeks, contact us for an ETA) 2003-2006 Audi A4 Cabriolet |
 $197.00 51235MagnaFlow Conv Universal 2.25 with single O2 OEM IN STOCK (5+) SHIPS FROM MANUFACTURER (Last checked: 12/30/2025) Shipping times vary by Manufacturer (Can take days or weeks, contact us for an ETA) 2003-2006 Audi A4 Cabriolet |
 $202.00 51355MagnaFlow Conv Univ 2.25in Inlet/Outlet Center/Center Round 11in Body L x 5.125in W x 15in Overall L IN STOCK 2002-2004 Audi A4 Base 2003-2004 Audi A4 Cabriolet |
 $182.00 99234HMMagnaFlow Conv Univ 2.00inch w/ single O2 IN STOCK (5+) SHIPS FROM MANUFACTURER (Last checked: 12/30/2025) Shipping times vary by Manufacturer (Can take days or weeks, contact us for an ETA) 2003-2006 Audi A4 Cabriolet |
 $182.00 99235HMMagnaFlow Conv Univ 2.25inch w/ single O2 IN STOCK (5+) SHIPS FROM MANUFACTURER (Last checked: 12/30/2025) Shipping times vary by Manufacturer (Can take days or weeks, contact us for an ETA) 2003-2006 Audi A4 Cabriolet |
 $188.00 99355HMMagnaFlow Conv Univ 2.25inch Honda IN STOCK 2002-2004 Audi A4 Base 2003-2004 Audi A4 Cabriolet |