Home » Oxygen Sensor Upstream Lambda O2 for Mercedes-Benz SLK350 W203

Oxygen Sensor Upstream Lambda O2 for Mercedes-Benz SLK350 W203

SKU: 1005012164113802-Default Title
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€51,12
-37% €81,79 €51,12

Upgrade your Mercedes-Benz SLK350 and other W203 family models with this Upstream Lambda O2 Oxygen Sensor from IWOKPHD. Engineered to monitor the air-fuel ratio at the upstream position, this heated, piezoelectric sensor delivers rapid, accurate lambda readings that help your engine run cleaner, smoother, and more efficiently. By keeping the combustion mixture within optimal limits, you can reduce emissions, improve throttle response, and maintain stable idle across temperatures and driving conditions.

Designed to fit a broad range of W203 Mercedes-Benz C-Class variants (and associated CL/Coupe/SLK lines listed in the compatibility notes), this sensor aligns with OEM specifications to ensure a reliable, long-lasting replacement. It provides a direct, drop-in replacement that supports consistent engine performance without the guesswork of aftermarket mismatches.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

Benefits & Tips

  • Experience faster sensor response thanks to the built-in heating element, reducing cold-start emissions and improving fuel trim accuracy during warm-up.
  • Maintain optimal air-fuel ratios for smoother acceleration, better idle stability, and improved fuel economy on C-Class W203 and SLK350 applications.
  • Verify part compatibility using the OEM numbers and style references listed below to ensure a precise fit before installation.

Product specifications

  • Brand: IWOKPHD
  • Sensor Type: Piezoelectric
  • Heating: Heating Type
  • Measuring Range: Upstream Front Air Fuel Ratio Lambda O2
  • OEM Number: A0035427318
  • Manufacturer Part Numbers (synonyms/listed codes): A0035427318, 0035427318, 0025401817, 0258007161, 0258007162, 0035428218, 234-5117, 2345117, 95560612601, 021906262B, 17242, 25401817, ES11026-12B1, 022906262P, 077906262, 077906262D, 079906262E, 07D906262C, 07C906262D, 17161
  • Origin: Mainland China
  • Repeatability: Specified for W203, CL203, S203, CL203 C209, Sprinter 3.5-box, SLK, E-Class W211 (compatibility codes provided)
  • Resolution: 022906262P, 077906262, 077906262D, 079906262E, 07D906262C, 07C906262D, 17161
  • Application (fitment highlights): For Mercedes-Benz C-Class (W203) from 2000/05 to 2007/08, including C180 Kompressor (203.046), C200 Kompressor (203.042), C200 CGI Kompressor (203.043), C230 Kompressor (203.040); also compatible with related CL203/S203/C209/SLK/E-Class/W211 platforms listed in the product notes

Package includes:

  • 1 x Oxygen Sensor

Warnings / Reminders

Please check product pictures and fitment before ordering. If you are not sure, contact us prior to purchase. We do not refund incorrect orders, so verifying compatibility with the listed OEM numbers and your vehicle is essential.

All electronic and mechanical equipment, devices and machines sold by InterCyprus to EU countries are CE certified and carry a two year warranty.

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