BMW 3 5 X5 Series E60 N E70 E90 F30 Exhaust Lambda Probe Oxygen Sensor 7801158

The BMW E60 E70 E90 M57N2 Lambda Sensor is an original BMW engine control component responsible for precise exhaust gas composition measurement and fuel injection correction. By maintaining factory operating parameters, the sensor works seamlessly with the engine control unit software, supporting stable M57N2 unit operation and proper mixture regulation. It's a practical choice for users looking for an original BMW lambda sensor in the "Other" category.

Specifications and technical data

• SKU: 7801158
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7801158
• Substitutable numbers: 7801158, 13627801158
• Category: Other Starters, Alternators, ECUs & Wiring

Application and Role of the Lambda Sensor in the M57N2 Engine

The BMW E60 E70 E90 M57N2 Lambda Sensor operates within the exhaust system, monitoring oxygen content in the exhaust gases. Based on the sensor's signal, the engine control unit adjusts the fuel injection rate, which affects:

• maintaining the correct fuel-air mixture composition,
• stable operation of the powertrain unit under various load conditions,
• efficiency of the exhaust gas purification system,
• reduction of excessive smoke and incorrect readings from other sensors.

In M57N2 engines, a properly functioning lambda sensor is crucial for maintaining the manufacturer-designed operating characteristics and for accurate computer diagnostics.

Benefits of Using an Original BMW Sensor

Using an original BMW component to replace a worn or damaged sensor offers tangible operational benefits. The sensor maintains factory signal parameters, which translates to:

• consistent cooperation with the engine control unit without the need for adapting aftermarket solutions,
• maintaining the M57N2 unit's operating characteristics as intended by the manufacturer,
• reduced risk of mixture and exhaust system-related errors,
• easier diagnostics – sensor readings are predictable and consistent with BMW service documentation.

For users who want to keep their car in a configuration close to factory specifications, choosing an original BMW lambda sensor is a technically safe and predictable solution.

Product Condition and Installation Aspects

The offered sensor belongs to the Other category, allowing for flexible application in various service configurations for BMW E60, E70, and E90 models with the M57N2 engine. The component is designed for installation in place of the factory sensor, maintaining the original electrical and mechanical connection method.

When replacing the lambda sensor, it is recommended to:

• check the condition of the thread in the exhaust system,
• inspect the wiring harness for abrasions and contact corrosion,
• perform computer diagnostics after installation to verify operating parameters.

This approach facilitates the restoration of correct engine control system operation and reduces the risk of further service interventions.

Other BMW Parts – Expanding Service Scope

If you are planning a broader range of service work and need other parts from the Other category dedicated to this brand, check out our offer for Other BMW Parts. This makes it easier to assemble a set of parts within a single brand, which is convenient for larger repairs or upgrades.

Technical Knowledge and Powertrain Development

If you are interested in how manufacturers differentiate the design of engines, exhaust systems, and accessories in standard and sport versions, it is worth reading the comparative analysis in the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?. This provides a good supplement to your knowledge on how changes in engine accessories, exhaust systems, and control translate into performance and powertrain characteristics – also in the context of conscious selection of replacement parts for BMW.