BMW E46 E60 E61 E65 M52 M54 Lambda Probe Sensor Petrol Engine 1433940

BMW E46 E60 E61 E65 Lambda Sensor 1433940 is an original part from the Lambda Sensors and O2 Sensors category, designed for BMW gasoline engines. A used OEM sensor ensures accurate mixture composition readings, stable engine operation, and proper exhaust gas purification system functionality.

Specifications and technical data

• SKU: 1433940
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 1433940
• Substitutable numbers: 1433940, 11781433940
• Fuel type: Petrol
• Category: Oxygen Sensors

Application and Role of Lambda Sensor in BMW

The lambda sensor in BMW E46, E60, E61, and E65 series models is responsible for precisely measuring the oxygen content in the exhaust gases of gasoline engines. Based on the signal from the sensor, the engine control unit adjusts the fuel dosage, which translates to:

• stable idling and under load operation,
• proper throttle response,
• maintaining optimal fuel-air mixture composition,
• efficient catalytic converter operation and reduced emissions.

A correctly chosen BMW lambda sensor is crucial for resolving issues such as increased fuel consumption, fluctuating idle speed, or fuel system-related errors.

Benefits of Using an Original BMW Lambda Sensor

Choosing a used original O2 sensor is a sensible solution for users who want to maintain factory engine operating parameters while controlling service costs. The main advantages include:

• Factory compatibility with BMW's electrical system and engine control unit.
• Appropriate signal characteristics, matched to the injection maps for specific gasoline engines.
• No need for wiring modifications or adapter use.
• Ability to restore correct fuel trims after replacing a worn sensor.

By maintaining the original specifications, the engine control unit adapts faster after installation, and the diagnosis of operating parameters (e.g., in live data logs) is more predictable.

Condition, Verification, and Selection by Technical Data

The offered BMW lambda sensor is a used part from a dismantled vehicle, allowing for a combination of an attractive price with OEM quality. Before being offered for sale, the element is verified for:

• compliance with the Lambda Sensors and O2 Sensors category,
• suitability for gasoline engines,
• appropriate connector type and cable length (within the given reference).

Part selection is facilitated by the OEM marking and available cross-reference numbers, enabling precise matching of the sensor to a specific engine version and model year, minimizing the risk of incompatibility.

Installation and Diagnostic Tips

When replacing a lambda sensor in a BMW, it's worth paying attention to several technical aspects to fully utilize the element's potential:

• before installation, check the condition of the thread in the manifold or exhaust pipe,
• avoid damaging the cable and connector during tightening,
• after replacement, clear adaptations and errors in the engine control unit,
• verify the sensor's operation in live data parameters (response time, voltage range, fuel trims).

A correctly installed BMW lambda sensor for a gasoline engine helps restore proper engine running smoothness, reduce fuel consumption, and decrease the risk of catalytic converter damage due to an overly rich mixture.

Related Guides and Other BMW Lambda Sensors

If you want to learn more about when to opt for used sensors and how to safely select them by OEM numbers and hardware parameters, check out the guide: Used Automotive Electronics and Sensors – Why Choose Proven Second-Hand Parts. You'll find practical tips on compatibility, installation, and diagnostics there.

Are you looking for other BMW Lambda Sensors and O2 Sensors for your car to comprehensively care for your exhaust system and mixture control? Check out the available BMW Lambda Sensors and O2 Sensors to select the right part for your specific model and engine version.