Mercedes B Class Catalytic Converter
Replacement catalytic converter — fitment, symptoms & live UK prices.
Fits Mercedes B Class — check your reg/VIN to confirm
From £103.64 · 6 live listings on eBay
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Catalytic Converter Type Approved For Mercedes B-Class W245 B 180 CDI Rear BM
£103.64View ›
Catalytic Converter + Fit Kit For Mercedes B-Class W245 B 200 CDI Rear BM Cats
£113.32View ›
Catalytic Converter Type Approved + Kit For Mercedes B-Class W245 B 200 CDI Rear
£113.32View ›
Catalytic Converter Type Approved For Mercedes B-Class W245 B 200 CDI Front BM
£165.58View ›
Catalytic Converter Type Approved + Kit For Mercedes B-Class W245 B 180 CDI
£170.87View ›
Approved Catalytic Converter + Kit For Mercedes B-Class W245 B 200 CDI Front
£179.87View ›
Will it fit my Mercedes B Class?
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 Mercedes B Class 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 Mercedes B Class parts
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Live pricesFrom £103.64
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