BMW E60 E61 E63 N52 Lambda Probe Monitor Sensor L= 520MM Petrol

BMW E60 E61 E63 N52 Lambda Probe Monitor Sensor L= 520MM Petrol is a component from the Lambda probes and O2 sensors category, designed for BMW petrol engine fuel systems from the N52 family. It enables precise measurement of exhaust gas composition, which supports the proper operation of the engine control unit, stable engine performance, and compliance with emission standards.

Specifications and technical data

• SKU: 7545244
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7545244
• Substitutable numbers: 7545244, 11787545244
• Fuel type: Petrol
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The lambda probe in a petrol engine plays a key role in the closed-loop air-fuel mixture control. Based on the signal from the sensor, the engine control unit adjusts the fuel dose, maintaining the air-fuel ratio within the optimal range. In N52 units, this translates into:

• stable operation at idle and under load,
• efficient operation of the three-way catalytic converter,
• reduced fuel consumption while maintaining proper dynamics,
• reduction of harmful exhaust gas emissions.

For BMW petrol engines, using the correct O2 sensor is important both from the perspective of performance and the durability of exhaust system components.

Compatibility and OEM selection

The offered lambda probe is a component intended for BMW vehicles, compatible with control systems used in N52 engines. Selection based on the OEM number and interchangeable numbers allows for verifying compatibility with a specific version of the control unit and electrical harness, which minimizes the risk of installation problems and OBD diagnostic errors.

Before purchasing, it is recommended to compare the parameters with the vehicle's service documentation or verify via the VIN number to ensure that the sensor matches the applied exhaust system and engine control unit configuration.

Performance characteristics and advantages of use

A properly selected lambda probe in a petrol engine ensures:

• correct air-fuel mixture correction across the full load range,
• consistency of readings with other sensors in the control system,
• reduced risk of the MIL (check engine) light turning on due to mixture errors or catalytic converter efficiency issues,
• more predictable measurement results during periodic technical inspections.

In BMW vehicles with an N52 engine, replacing the lambda probe with a functional unit is often one of the basic steps when troubleshooting issues with rough idling, increased fuel consumption, or exhaust gas composition errors.

Condition, origin, and use in service practice

The presented lambda probe is a used component, which allows for an economical repair of the exhaust system while maintaining the original installation specifications. Such components are frequently used in professional workshops specializing in BMW service, especially in the case of intensively operated vehicles where a reasonable repair cost while maintaining proper functionality is a priority.

More practical information on selecting and installing used sensors and control modules can be found in our guide: Used automotive electronics – ECU modules and second-hand sensors in service practice.

BMW Lambda probes and O2 sensors – expansion and system modernization

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other components from the same group, such as additional pre- and post-catalytic converter probes, O2 sensors for other cylinder banks, or auxiliary exhaust gas measurement system components, check the available parts in the BMW Lambda probes and O2 sensors category.