BMW E60 E61 E90 E91 LCI F10 Lambda Probe Oxygen Sensor Control Unit 7794634

BMW E60 E61 E90 E91 LCI F10 Lambda Sensor 7794634 is an original part from the Lambda Sensors and O2 Sensors category, designed for the exhaust systems of selected BMW models. A used OEM sensor ensures consistency with factory engine electronics, stable engine operation, and proper control of the fuel-air mixture. This is a solution for users seeking a part that is structurally and electrically matched to a specific BMW generation, without compromising on compatibility.

Specifications and technical data

• SKU: 7794634
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7794634
• Substitutable numbers: 13627794634, 7794634, 0281004029, 0 281 004 029
• Category: Oxygen Sensors

Intended Use and Compatibility with BMW Models

The presented lambda sensor is designed to work with the powertrains used in BMW 5 Series E60/E61, 3 Series E90/E91 (LCI version), and 5 Series F10. This means that the sensor's geometry, connector type, and signal characteristics are adapted to the factory engine control units of these generations.

Thanks to the use of an original BMW solution, proper communication with the ECU is maintained, which translates to:

• correct reading of oxygen content in exhaust gases,
• stable fuel delivery regulation across the full load range,
• reduced risk of diagnostic errors related to sensor parameter incompatibility.

Technical Characteristics of the Lambda Sensor

The lambda sensor in this series belongs to the group of O2 sensors used in modern BMW injection systems. The construction of the measuring element allows for quick achievement of operating temperature and precise reading of exhaust gas composition under various engine operating conditions.

Key features include:

• dedicated signal characteristics compliant with BMW control unit requirements,
• factory electrical connector eliminating the need for wiring modifications,
• designed for specific models, including cable length and harness routing.

This solution facilitates installation and reduces the risk of errors resulting from the use of universal replacements with different operating parameters.

Benefits of Using an Original BMW Lambda Sensor

Using an original lambda sensor in BMW E60, E61, E90, E91 LCI, and F10 models helps maintain the consistency of the entire engine control system. In practice, this means:

• stable idle operation and during acceleration,
• more predictable throttle response due to proper fuel delivery correction,
• reduced risk of the control unit entering limp mode due to an incorrect O2 sensor signal,
• easier diagnostics – sensor parameters are consistent with factory data, facilitating the interpretation of logs and readings from diagnostic tools.

For users who want to keep their car as close to its factory condition as possible, choosing an original O2 sensor is a more predictable solution than installing a random replacement.

Condition, Origin, and Service Application

The offered BMW lambda sensor is a used part from disassembly, which helps reduce repair costs while maintaining the original manufacturer's specifications. This type of part is suitable for both routine replacement of a worn sensor and for comprehensive exhaust system repairs or system upgrades within a specialized service.

Due to its factory origin, the sensor is particularly recommended for workshops specializing in the BMW brand and for users who expect compliance with the parameters set by the vehicle manufacturer.

More BMW Lambda Sensors and Knowledge about Used Electronics

If you are looking for other BMW Lambda Sensors and O2 Sensors compatible with specific models, check out our dedicated category: BMW Lambda Sensors and O2 Sensors. You will find a wide selection of original sensors for various generations of this brand.

Are you planning a broader replacement of electronic components and want to better understand how to safely choose used modules and sensors? Check out our practical guide: Used Automotive Electronics On Board – Why Choose Second-Hand ECU Modules and Sensors?, where we discuss selection by OEM numbers, compatibility issues, and common user questions.