BMW 3 7 Z3 X5 Series E36 E38 E46 E53 Sonda Monitor Lambda Sensor Probe 1739847

BMW E56 E53 Lambda Sensor Exhaust 1739847 is an original part from the Lambda Sensors and O2 Sensors category, designed for precise monitoring of exhaust gas composition in BMW exhaust systems. This used OEM component ensures proper compatibility with the factory engine control unit, stable engine operation, and correct functioning of emission control systems.

Specifications and technical data

• SKU: 1739847
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1739847
• Substitutable numbers: 11781739847, 1739847, 11781739845, 1739845, 1739848, 11781739848
• Category: Oxygen Sensors

Purpose and Role of a BMW Lambda Sensor

A lambda sensor in a BMW exhaust system is responsible for measuring the oxygen content in exhaust gases and transmitting this signal to the engine control unit. This enables:

• maintaining the correct air-fuel mixture across a wide range of loads,
• stable engine operation at idle and under load,
• efficient functioning of the catalytic converter and emission reduction systems,
• reduced fuel consumption while maintaining adequate performance.

Selecting a sensor dedicated to a specific BMW platform, such as the E53 or E56, minimizes the risk of control unit errors and adaptation issues.

Benefits of Using an Original Exhaust Sensor

An original BMW exhaust sensor provides correct electrical parameters and operating characteristics in line with the manufacturer's specifications. In practice, this means:

• proper communication with the ECU without the need for wiring modifications,
• appropriate heating speed of the measuring element,
• stable signal across the full range of operating temperatures,
• reduced risk of diagnostic errors related to the mixture and catalytic converter.

Compared to universal replacements, a matched OEM part requires less additional configuration and simplifies future diagnostics.

Condition, Origin, and Practical Application

The presented BMW lambda sensor is a used part obtained from disassembly and is offered as a used original component. Such components are often chosen for:

• routine maintenance repairs on vehicles with higher mileage,
• restoring exhaust system functionality after a failure,
• resolving issues with uneven engine running and increased fuel consumption,
• clearing errors related to fuel trims and catalytic converter operation.

Thanks to its original construction and connectors, installation is similar to replacing a new part, without the need for modifications to the wiring harness or exhaust system threads.

Selection by OEM Number and Compatibility

To correctly select a lambda sensor for a specific BMW model, it is crucial to verify the OEM part number and available interchangeable numbers in the specifications. It is also advisable to use the vehicle's VIN and service documentation to avoid hardware and software compatibility issues.

If you have any doubts regarding the selection of a used sensor or other engine electronics and accessories, the Global Parts guide will be helpful: Used Automotive Electronics Onboard – Why Choose Second-Hand ECUs and Sensors?. You will find practical tips there on verifying numbers, compatibility, and installation.

Other BMW Lambda Sensors and O2 Sensors

If you are also looking for other items in the category of lambda sensors and oxygen sensors dedicated to this brand, check out the BMW Lambda Sensors and O2 Sensors available in our assortment. This will allow you to select the appropriate sensor for your car's specific engine version and year.

Summary

BMW E56 E53 Lambda Sensor Exhaust 1739847 is a used, original part from the Lambda Sensors and O2 Sensors category, designed for compatibility with the factory BMW engine control unit. A correctly selected sensor helps maintain the proper air-fuel mixture, supports efficient catalytic converter operation, and reduces fuel consumption, making it a sensible solution for servicing the exhaust system in vehicles of this brand.