Focus ST Catalytic Converter
Replacement catalytic converter — fitment, symptoms & live UK prices.
Fits Focus ST — check your reg/VIN to confirm
From £13.26 · 6 live listings on eBay
View Catalytic Converter on eBay🛡️ eBay Money Back Guarantee🇬🇧 UK sellers↩️ Easy returns
Catalytic Converter Fitting Kit fits FORD FOCUS ST170 Mk1 2.0 02 to 04 ALDA BM
£13.26View ›
FORD FOCUS ST170 2.0 03/02-01/05 CONNECTING FLEXI PIPE TO CATALYTIC CONVERTER
£64.86View ›
FORD FOCUS CATALYTIC CONVERTER 1.5 ECOBOOST ST LINE MK3 2017 BV61 5E211EK
£100.00View ›
FORD FOCUS ST-LINE MK4 CATALYTIC CONVERTER 1.0 PETROL MANAUL 2069400x B7DA
£140.00View ›
Ford Focus st Or Cmax Catalytic Converter and Manifold 2.0 Brand New Ecfd1101ta
£156.70View ›
Ford Focus St170 Catalytic Converter
£167.10View ›
Will it fit my Focus ST?
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 Focus ST 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 Focus ST parts
Engine MountFocus STWheel BearingFocus STExhaustFocus STTurboFocus STIntercoolerFocus STDrive ShaftFocus ST
Live pricesFrom £13.26
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