BMW E82 E88 E90 E91 E92 N54 Regulating Lambda Probe L=1200MM 7558087

BMW E90 E92 N54 Exhaust Lambda Sensor 7558087 is an original part from the Lambda Sensors and O2 Sensors group, designed for precise exhaust gas composition monitoring in BMW engines with the N54 unit. A used, tested sensor allows for a technically correct repair of the exhaust system and restoration of proper fuel-air mixture control without the need for more expensive aftermarket alternatives.

Specifications and technical data

• SKU: 7558087
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7558087
• Substitutable numbers: 7558087, 11787558087, 51417240416, 7240416
• Category: Oxygen Sensors

Purpose and Function of a BMW Lambda Sensor

The presented BMW exhaust lambda sensor is an OEM component from BMW, working with the engine control system in E90 and E92 series models with the N54 engine. Its task is to continuously measure the oxygen content in the exhaust gases and transmit the signal to the control unit, which uses this information to adjust the fuel dose, injection timing, and the operation of other components responsible for engine smoothness.

A properly functioning lambda sensor contributes to:

• stable engine operation across the full range of loads,
• maintaining optimal mixture composition,
• efficient catalyst operation and reduced emissions,
• economical fuel consumption in daily use.

Benefits of Using an Original BMW Sensor

Using an original exhaust lambda sensor in an N54 engine ensures the correct signal characteristics and full compatibility with the factory control unit software. In practice, this means:

• accurate reproduction of performance parameters as intended by the manufacturer,
• reduced risk of diagnostic errors and dashboard warning lights,
• compatibility with the factory wiring harness and connectors.

Additionally, using a used OEM part allows for a technically correct repair while maintaining a favorable cost-to-quality ratio, which is particularly important when servicing high-performance turbocharged engines.

Condition, Compatibility, and Selection by Part Numbers

The offered sensor belongs to the group of used parts, meaning it comes from a dismantled vehicle and is intended for further use after proper installation. This solution is often chosen by professional workshops specializing in the BMW brand, especially for repairs requiring full compliance with factory specifications.

The selection of the correct lambda sensor for a specific vehicle should be based on the OEM part number and interchangeable numbers, as well as vehicle data (model, year, engine type). If in doubt, it is advisable to consult manufacturer catalogs or seek expert advice to avoid issues with electrical and software compatibility.

If you want to learn more about selecting and installing used sensors and control modules, you can find practical tips in the article: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?.

Importance of the Lambda Sensor for N54 Engine Operation

The N54 engine, with its turbocharging and advanced control, is particularly sensitive to the quality of signals from sensors. A functional exhaust lambda sensor:

• facilitates maintaining the correct mixture composition under high load,
• reduces the risk of overly rich or lean operation, which can affect engine durability,
• supports the proper functioning of emission control systems.

Therefore, replacing a faulty sensor with an original part from this offer is a crucial step in restoring the full functionality of the exhaust system and engine control in BMW E90/E92.

Expanding the Exhaust Measurement System in BMW

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

When planning a more extensive vehicle service, it is also worth familiarizing yourself with practical advice on the operation and replacement of wear parts, described in the material: TOP 10 Most Frequently Replaced Parts in Your Car.