Audi A4 B7 Catalytic Converter
Replacement catalytic converter — fitment, symptoms & live UK prices.
Fits Audi A4 B7 — check your reg/VIN to confirm
Catalytic Converter
Aftermarket £80–£250; OEM much more.
View Catalytic Converter on eBay🛡️ eBay Money Back Guarantee🇬🇧 UK sellers↩️ Easy returns
Will it fit my Audi A4 B7?
Must be the correct emissions-spec cat for your engine and year, or it'll fail MOT. Type-approved units only.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Audi A4 B7 catalytic converter needs replacing
- P0420 / catalyst efficiency code
- Rattling inside (broken substrate)
- Failed emissions/MOT
- Sluggish, rotten-egg smell
Fitting it yourself
Bolt-on or welded depending on setup. Lambda sensors often transfer over.
See Catalytic Converter prices on eBayMore Audi A4 B7 parts
HeadlightAudi A4 B7ExhaustAudi A4 B7Window RegulatorAudi A4 B7Engine MountAudi A4 B7EGR ValveAudi A4 B7Starter MotorAudi A4 B7
Live pricesAftermarket £80–£250; OEM much more.
View on eBay