Mercedes B Class Oxygen Sensor
Replacement oxygen sensor — fitment, symptoms & live UK prices.
Fits Mercedes B Class — check your reg/VIN to confirm
From £14.95 · 6 live listings on eBay
View Oxygen Sensor on eBay🛡️ eBay Money Back Guarantee🇬🇧 UK sellers↩️ Easy returns
Lambda Probe Mercedes ML GL Class W164 W169 Oxygen Sensor A0035427018
£14.95View ›
Mercedes A B Class W176 W246 Petrol Lambda Oxygen Sensor A0075426318
£19.95View ›
Lambda Oxygen Sensor Front Aim Fits Mercedes C-Class 2.0 2.2 4 Wire
£22.50View ›
Lambda Oxygen Sensor + Socket Front For Mercedes A Class B
£26.95View ›
5-Pin Upstream Pre-Cat Lambda Oxygen Sensor A0065424918 For Mercedes W166 11-18
£30.39View ›
Upstream O2 Oxygen Sensor For Mercedes-Benz C Class W204 W205 0065424918 5Pin UK
£30.39View ›
Will it fit my Mercedes B Class?
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 Mercedes B Class 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 Mercedes B Class parts
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