BMW F10 F20 F30 E90 LCI Oxygen Sensor Exhaust Lambda Petrol 7793825

BMW F10 F20 F30 E90 LCI Petrol Lambda Sensor 7793825 is an original part from the Lambda Sensors and O2 Sensors group, designed for petrol fuel systems in selected BMW models. A used sensor allows for an economical yet technically correct repair of the fuel-air mixture control system, while maintaining factory engine operating parameters.

Specifications and technical data

• SKU: 7793825
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7793825
• Substitutable numbers: 13627793825, 7793825, 0281004028
• Fuel type: Petrol
• Category: Oxygen Sensors

Application and Function in Petrol Systems

The presented lambda sensor operates in the exhaust system of a petrol engine, where it monitors the oxygen content in the exhaust gases and sends a signal to the engine control unit. This allows for precise fuel dose correction, which contributes to stable engine operation, proper idle quality, and reduced fuel consumption. A properly functioning O2 sensor also helps maintain catalyst efficiency and meet emission standards.

Benefits of Using an Original BMW Lambda Sensor

Using an original BMW O2 sensor ensures:

• consistency of signal characteristics with maps stored in the engine control unit,
• stable operation across a wide range of temperatures and loads,
• correct system response to changes in mixture composition,
• reduced risk of diagnostic errors related to incorrect oxygen readings in exhaust gases.

For the user, this means more predictable vehicle behavior, better throttle response, and the ability to maintain optimal combustion parameters without the need for costly software modifications.

Selection by OEM Number and Compatibility

The part has been specifically designed for the BMW brand, which facilitates matching to specific engine versions and model years. When selecting, it is advisable to use the OEM number and interchangeable numbers to verify compatibility with your vehicle. This approach minimizes the risk of installing an incorrect sensor that could generate errors in the control unit or cause improper mixture regulation.

To better understand how to safely use used electronic and measurement components in your car, it is worth reading the guide on selecting and installing modules and sensors: Used Car Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.

Product Characteristics and Condition

The offered lambda sensor is a used part, removed from a vehicle, and intended for reinstallation in a petrol system. This type of solution allows for reduced repair costs while maintaining the original construction of the component. The product is suitable for users who expect factory fitment to the vehicle's electrical and mechanical installation, without the need for modifications to the wiring harness or exhaust threads.

Choosing a used O2 sensor is particularly beneficial when you want to maintain the original vehicle specification while adhering to a rational service budget. This allows you to restore the correct operation of the engine control system, reduce the occurrence of error lights, and improve combustion parameters.

Expanding the Exhaust Gas Measurement System in BMW

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as additional O2 sensors, pre- and post-catalyst sensors, or exhaust gas composition monitoring components, check the available parts in the BMW Lambda Sensors and O2 Sensors category.