VALEO 368271 

Oxygen Sensor (Lambda Sensor ) 

Technical Data

Product Information

The Oxygen Sensor (Lambda Sensor) is a vital emissions control component. Positioned upstream (before the catalytic converter), it continuously measures the amount of unburned oxygen in the exhaust gases . This high-quality VALEO unit utilizes advanced planar sensor technology with an integrated heater, enabling it to reach operating temperature rapidly. This allows the Engine Control Unit (ECU) to precisely adjust the air-fuel ratio for optimal combustion efficiency almost immediately after startup . Featuring 4 circuits, a 400 mm cable length, and factory pre-greased M18x1.5 threads, it ensures a seamless and secure installation . It serves as a direct OE replacement for several Renault applications, specifically the Renault Twingo III .

About the Manufacturer: VALEO is a multinational automotive supplier based in France, renowned for providing cutting-edge technologies and systems to automakers globally. As a trusted Original Equipment Manufacturer (OEM), VALEO oxygen sensors guarantee exact fitment, outstanding durability, and highly accurate signal transmission to keep your engine running efficiently and cleanly .

• ✔ Premium VALEO planar technology ensures highly accurate, continuous air-fuel mixture regulation and fast light-off times .
• ✔ Upstream heated sensor (4 terminals, 400 mm cable) featuring factory pre-greased threads for reliable and safe installation .
• ✔ Exact replacement for OEM part numbers including Renault 226903337R .

Cross Reference

Fully interchangeable with OEM/OE parts:

⚠ Diagnostic & Installation Tip ⚠

Before replacing the oxygen sensor:

• Check the exhaust system for leaks upstream of the sensor. Exhaust leaks can draw in outside air, skewing the sensor's readings and triggering false lean mixture codes .
• This VALEO sensor comes with threads pre-coated with anti-seize compound. Do not apply additional anti-seize, and ensure it never touches the sensor tip or slots, as this will permanently ruin the sensor element .
• Always route the 400 mm sensor cable carefully, keeping it away from extreme heat sources like the exhaust manifold to prevent melting and short circuits .

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