Exhaust Lambda Probe BMW E60 E87 E90 E91 Exhaust Sensor Wiring 7558055

BMW E60 E87 E90 Exhaust Lambda Sensor Petrol 7558055 is an original part from the Lambda Sensors and O2 Sensors category, designed for exhaust systems in petrol BMW E60, E87, and E90 series models. A used OEM sensor ensures accurate exhaust gas composition readings, which translates to stable engine operation, correct mixture regulation, and proper engine control system functionality. This is a solution for users seeking a technically proven component at a reasonable price.

Specifications and technical data

• SKU: 7558055
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7558055
• Substitutable numbers: 11787558055, 7558055
• Category: Oxygen Sensors

Purpose and Function of a BMW Lambda Sensor

The exhaust lambda sensor in petrol BMW E60, E87, and E90 series models is responsible for monitoring oxygen content in the exhaust gases and transmitting a signal to the engine control unit. This enables:

• precise adjustment of the fuel-air mixture,
• maintenance of stable engine RPM and smooth running,
• reduced fuel consumption while maintaining adequate dynamics,
• cooperation with the catalytic converter in reducing exhaust emissions.

Choosing a sensor from the same OEM family ensures signal compatibility with the factory control unit, which is crucial for the correct operation of the injection system.

Benefits of Using an Original Exhaust Sensor

Compared to aftermarket alternatives, an original BMW exhaust lambda sensor offers stable operating parameters and predictable performance over a longer service life. Key advantages include:

• Factory electrical characteristics – the engine control unit receives a signal consistent with the maps stored in the ECU software.
• Correct geometry of the measuring element – the sensor is adapted to the exhaust gas flow in the specific model's exhaust system.
• Appropriate thermal resistance – the sensor's construction is designed to operate in the high temperatures typical of BMW petrol engines.
• Direct installation in place of the original component, without modifications to the wiring.

Therefore, replacing with an original sensor from the same product line helps restore proper engine response to load and reduce errors related to the fuel-air mixture.

Condition, Origin, and Practical Application

The presented BMW lambda sensor is a used part, sourced from disassembly, and offered as a used component, allowing for economical exhaust system repair while retaining an OEM part. This type of solution is particularly beneficial when:

• lambda sensor errors appear in computer diagnostics,
• idle RPM fluctuations or increased fuel consumption occur,
• the car fails emission tests due to incorrect mixture regulation.

Selecting the part based on the OEM part number and interchangeable numbers ensures compatibility with the specific engine version within the E60, E87, and E90 series, minimizing the risk of post-installation problems.

How to Choose the Right Lambda Sensor for Your BMW

To correctly select an exhaust lambda sensor for your BMW, it is advisable to rely on:

• the OEM part number assigned to the specific engine configuration,
• interchangeable numbers specified by the manufacturer,
• the exact model designation and year of the vehicle.

If you have any doubts, VIN lookup tools or consultation with a mechanic may be helpful. Additional tips regarding used sensors and control modules can be found in the Global Parts guide: used automotive electronics – second-hand ECU modules and sensors, which discusses compatibility and safe installation.

Other BMW Lambda Sensors and O2 Sensors

If you are also looking for other solutions in this group, check out the available BMW Lambda Sensors and O2 Sensors to find a component tailored to your car's specific engine version and exhaust system.