Audi RS4 B9 Catalytic Converter
New, used, or aftermarket – from sellers across Europe.
Parts availability
Limited availability – hank searches the web for you.
Estimated price range
Widely available Limited Hard to find
Last updated: 05.11.2026, 20:57
Catalytic Converter for your Audi RS4?
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In addition, sellers on hank can send you offers directly.
Prices from recent listings
| Source | Condition | Price (approx.) | Last seen |
|---|---|---|---|
| oldtimer-thimm via ebay.de | New | 878.90 € | 2026-11-05 |
| porscheteile-sommerfeld via ebay.de | New | 1,399.00 € | 2026-11-05 |
| autocirc_kungsara_bildemontering via ebay.de | Used | 1,732.25 € | 2026-11-05 |
| dwparts_eu via ebay.de | New | 2,249.00 € | 2026-11-05 |
| donkers.vag.parts via ebay.de | Used | 2,475.00 € | 2026-11-05 |
| eBay | New | 878.90 € | 2026-09-03 |
| eBay | Used | 2,475.00 € | 2026-09-03 |
Indicative values only – current prices may vary.
Price comparison: Catalytic Converter
Current median for the Audi RS4 B9: 1,732.25 €.
Median across all car models: around 360 €. This model is 380% above that and more expensive than 95% of the models compared.
Median across Audi car models: around 450 €. This model is 285% above that and more expensive than 85% of the models compared.
Compares the medians of the most recent offers found for each model.
Find Audi RS4 B9 parts online
hank's free AI report searches specialized shops for Audi RS4 B9 parts, including Progressive Parts, Awesome GTI & Partshaus Ltd.
About this part
The catalytic converter on your RS4 B9 converts the pollutants in the exhaust and decides whether the emissions test passes. Rattling when pulling away, a loss of power from blocked ceramic or a lambda control fault all call for replacement.
Frequently asked questions
What should I check when buying a catalytic converter for the Audi RS4?
Emissions standard, engine code and flange dimensions of your RS4 B9 matter, because a converter for the wrong standard never brings the sensors into their control range. Look for a valid approval number on the housing and check that the lambda sensor bosses and heat shield are there.
A used original converter or an aftermarket one?
A used original fits without surprises and keeps the vehicle's approval, but tap it first to hear whether the ceramic has come loose. Aftermarket converters cost less yet need the matching approval, otherwise the roadworthiness test turns into a problem.
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