Lambda Oxygen Sensor (BEFORE Catalyst) Cylinder 4-6. Porsche 958 Cayenne 3.6L Petrol 2010-17  ❭  958906262E

Lambda Oxygen Sensor (BEFORE Catalyst) Cylinder 4-6. 
Maintain optimum engine performance, fuel efficiency, and emissions control with this Genuine Porsche Lambda Oxygen Sensor (Before Catalyst) – Cylinders 4–6, a direct replacement for 958906262E. Manufactured to Porsche's exact factory specifications, this high-precision sensor continuously monitors the oxygen content of the exhaust gases from cylinders 4–6 before they enter the catalytic converter. It provides real-time feedback to the engine control unit (ECU), allowing precise adjustment of the air-fuel mixture for efficient combustion, maximum engine performance, and reduced exhaust emissions.

Fits:

Diagram Ref No 29

Installed upstream of the catalytic converter on the cylinder bank serving cylinders 4–6, this lambda sensor is a vital component of the engine management and emissions control system. It measures the oxygen concentration in the exhaust stream and enables the ECU to continuously optimise fuel injection and ignition parameters under all driving conditions. Manufactured using premium sensing elements within a durable, heat-resistant housing, this genuine Porsche sensor is engineered to withstand extreme exhaust temperatures, vibration, and harsh operating environments, making it ideal for routine servicing, diagnostics, repairs, and restoration projects.

What This Product Does:

• Monitors oxygen levels in the exhaust gases before the catalytic converter.
• Specifically monitors the exhaust from cylinders 4–6.Provides accurate air-fuel ratio feedback to the engine control unit.
• Optimises fuel injection and combustion efficiency.
• Improves engine performance and throttle response.
• Helps reduce fuel consumption and exhaust emissions.
• Protects the catalytic converter from incorrect fuel mixtures.
• Provides a genuine Porsche fit for straightforward installation.

Symptoms Of Wear Or Failure:

• Engine management warning light illuminated.
• Increased fuel consumption.
• Rough idle or unstable engine operation.
• Reduced engine performance or acceleration.
• Poor throttle response.
• Increased exhaust emissions.
• Failed emissions or MOT testing.
• Diagnostic fault codes relating to the oxygen sensor or air-fuel ratio on Bank 2 (cylinders 4–6).
• Premature catalytic converter deterioration caused by incorrect fuel mixture.

Why Replacement Matters:

• The pre-catalyst lambda oxygen sensor for cylinders 4–6 is one of the primary inputs for the engine management system, allowing the ECU to maintain the ideal air-fuel ratio for that cylinder bank. A worn or faulty sensor can cause excessive fuel consumption, poor engine performance, rough running, increased exhaust emissions, and potential catalytic converter damage due to prolonged rich or lean fuel mixtures.
• Replacing a worn or faulty sensor with this Genuine Porsche Lambda Oxygen Sensor (Before Catalyst) – Cylinders 4–6 restores accurate exhaust gas monitoring, improves fuel efficiency, enhances engine performance, reduces emissions, and helps protect expensive emissions system components. Manufactured to Porsche's exacting standards, it delivers exceptional fit, precision, durability, and long-term reliability for Porsche maintenance, repairs, and restoration projects.

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958906262E

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