Focus ST Oxygen Sensor
Replacement oxygen sensor — fitment, symptoms & live UK prices.
Fits Focus ST — check your reg/VIN to confirm
From £12.68 · 6 live listings on eBay
View Oxygen Sensor on eBay🛡️ eBay Money Back Guarantee🇬🇧 UK sellers↩️ Easy returns
FOR FORD FIESTA OXYGEN SENSOR O2 LAMBDA MK4 MK6 MK1 FUSION FOCUS 1.25I 1.3 1.4
£12.68View ›
Lambda Sensor Post Cat Oxygen Sensor fits FORD FOCUS Mk3 ST 2.0 2012 to 20 R9DA
£18.99View ›
OXYGEN SENSOR O2 FOR FORD FIESTA LAMBDA MK4 MK6 MK1 FUSION FOCUS 1.25I 1.3 1.4
£19.59View ›
Lambda Oxygen Sensor Front Fits Ford Focus (Mk1) ST170
£21.95View ›
Lambda Oxygen Sensor Front Fits Ford Focus (Mk2) 1.6
£21.95View ›
Lambda Oxygen Sensor Front For Ford Focus (1998-2004) 1.6 2.0 2.3
£21.95View ›
Will it fit my Focus ST?
Pre-cat (upstream) and post-cat (downstream) sensors are different parts — check which one your fault code points to, and how many your engine has.
Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.
Signs your Focus ST oxygen sensor needs replacing
- Engine warning light (O2/lambda code)
- Poor fuel economy
- Rough idle or hesitation
- Failed emissions/MOT
Fitting it yourself
Usually a single plug and a thread into the exhaust — quick if it's not seized. Penetrating oil helps on an old sensor.
See Oxygen Sensor prices on eBayMore Focus ST parts
Engine MountFocus STWheel BearingFocus STExhaustFocus STTurboFocus STIntercoolerFocus STDrive ShaftFocus ST
Live pricesFrom £12.68
View on eBay