BMW E60 E63 540i 550i 650i Lambda Sensor Oxygen Exhaust Probe L=550mm 7540168

BMW E60 E61 E63 E64 540i 550i 650i Lambda Sensor 550mm 7540167 is an original part from the Lambda Sensors and O2 Sensors group, designed for precise control of the air-fuel mixture in BMW 5 and 6 Series gasoline engines. Thanks to its original BMW origin, it ensures proper compatibility with the engine control system and stable engine performance.

Specifications and technical data

• SKU: 7540168
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7540168
• Substitutable numbers: 7540168, 11787540168
• Category: Oxygen Sensors

Intended Use and Compatibility

The presented lambda sensor is dedicated to BMW E60, E61, E63, and E64 models in the 540i, 550i, and 650i versions, where it is responsible for measuring the oxygen content in the exhaust gases. The component works with the factory engine control unit, enabling correct fuel injection adjustment, maintaining the proper mixture composition, and limiting exhaust emissions to the manufacturer's specified level.

A cable length of approximately 550 mm allows for proper routing of the harness in the engine bay, maintaining the original path and mounting points. This ensures an organized installation and prevents the cable from being exposed to excessive stress or contact with hot exhaust system components.

Function in the Engine Control System

The lambda sensor in these V8 units plays a crucial role in the closed-loop mixture control. Based on the sensor's signal, the engine control unit adjusts the fuel injection timing, which translates to:

• stable idle and under load operation,
• proper throttle response across the entire RPM range,
• maintaining fuel consumption at the level intended for the specific engine,
• protecting catalytic converters from overheating and excessive thermal load.

A functional lambda sensor also helps reduce the risk of engine control unit errors and limp mode activation, which directly impacts vehicle usability.

Component Characteristics and Application Benefits

The offered component comes from the original BMW parts line, meaning factory electrical and mechanical parameters are maintained. This ensures that:

• the sensor's voltage signal is correctly interpreted by the control unit,
• the sensor's warm-up time is matched to the ECU's operating strategy,
• the electrical connector fits the factory harness without modifications.

The used nature of the part makes it an economical solution, allowing for the restoration of proper fuel system operation without the need to invest in a new OEM component. This is particularly beneficial for comprehensive repairs when the exhaust system, catalytic converters, or multiple sensors in the vehicle are serviced simultaneously.

Professional Selection and Installation

To ensure full compatibility, it is advisable to verify the fitment with your specific engine version and car year before purchasing, using the OEM number or catalog data. Proper installation includes:

• removing the old sensor while observing the correct work sequence,
• checking the thread condition in the manifold or exhaust pipe,
• correctly routing the cable, maintaining clearance from hot components,
• securely connecting the connector in the electrical harness.

By adhering to these principles, you can fully utilize the sensor's potential and achieve stable engine performance after replacement.

Related Parts and Technical Knowledge

If you are planning a comprehensive engine area repair or upgrade for your BMW and need other parts from the same group, such as additional lambda sensors, O2 sensors, or related exhaust sensors, check the available parts in the BMW Lambda Sensors and O2 Sensors category.

When selecting used sensors and electronic components, a guide on choosing modules and sensors by catalog numbers and installation principles will be helpful – detailed information can be found in the article Used Automotive Electronics Onboard – Why Choose Second-Hand ECU Modules and Sensors?.