Mercedes-Benz B-Class W245 Catalytic Converter
New, used, or aftermarket – from sellers across Europe.
Parts availability
This part appears to be widely available.
Estimated price range
Widely available Limited Hard to find
Last updated: 02.11.2026, 03:46
Catalytic Converter for your Mercedes-Benz B-Class?
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Prices from recent listings
| Source | Condition | Price (approx.) | Last seen |
|---|---|---|---|
| rema-parts via ebay.de | New | 177.99 € | 2026-11-02 |
| technikautoteile via ebay.de | New | 198.99 € | 2026-11-02 |
| superturbo-store via ebay.de | New | 206.99 € | 2026-11-02 |
| vehicles-plaza via ebay.de | New | 221.05 € | 2026-11-02 |
| ingenleuf-automobile via ebay.de | Used | 274.00 € | 2026-11-02 |
| hr.ilmaauto via ebay.de | Used | 299.00 € | 2026-11-02 |
| echappementauto-fr via ebay.de | New | 349.10 € | 2026-11-02 |
| autoteile_schnellversand via ebay.de | New | 433.41 € | 2026-11-02 |
Indicative values only – current prices may vary.
Price comparison: Catalytic Converter
Current median for the Mercedes-Benz B-Class W245: 299.00 €.
Median across all car models: around 360 €. This model is 15% below that and cheaper than 60% of the models compared.
Median across Mercedes-Benz car models: around 420 €. This model is 30% below that and cheaper than 75% of the models compared.
Compares the medians of the most recent offers found for each model.
Find Mercedes-Benz B-Class W245 parts online
hank's free AI report searches specialized shops for Mercedes-Benz B-Class W245 parts, including LLLParts, Cannstatt Classic Mercedes Parts & Hilton and Moss.
About this part
The catalytic converter on your B-Class W245 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 Mercedes-Benz B-Class?
Emissions standard, engine code and flange dimensions of your B-Class W245 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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