Ford Focus Mk3 Kuga Lambda Oxygen Sensor 2.0 Petrol BA5A-9Y460-AA

Ford Focus Mk3 Kuga Lambda Oxygen Sensor 2.0 Petrol is a component from the Lambda sensors and O2 sensors category, responsible for the precise measurement of exhaust gas composition in petrol engines. A properly functioning sensor supports stable engine operation, improves engine performance, and helps maintain compliance with exhaust emission standards. This solution is intended for users looking for a proven, factory-made component for their Ford exhaust system.

Specifications and technical data

• SKU: BA5A-9Y460-AA
• Mark: Ford
• Condition: Used
• OEM Part Number: BA5A-9Y460-AA
• Substitutable numbers: 1928404687, 1 928 404 687, BA5A-9Y460-AA, BA5A9Y460AA
• Fuel type: Petrol
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The presented lambda sensor has been designed to work with 2.0 petrol engines in Ford Focus Mk3 and Ford Kuga models. Its task is to monitor the oxygen content in the exhaust gases and send a signal to the engine control unit, which allows for real-time fuel mixture correction. As a result, the fuel system keeps the mixture in the optimal range, which promotes efficient starting, stable idle, and predictable throttle response. A properly selected lambda sensor helps reduce fuel consumption and supports the correct operation of the catalytic converter. For the user, this means more consistent performance, less susceptibility to jerking during acceleration, and better control over engine operating parameters in daily use.

Technical characteristics and compatibility

The element belongs to the Lambda sensors and O2 sensors group, which means it works directly with the fuel-air mixture control system. It has been developed for petrol-powered engines, so its signal characteristics and operating range are matched to the requirements of Ford petrol units. Using an original solution from this group allows for consistency with the factory engine control unit calibration. Selecting a sensor for a specific vehicle should be based on the OEM part number and interchangeable numbers, as well as vehicle data (model, year of manufacture, engine type). This approach minimizes the risk of electrical and mechanical compatibility issues and limits the need for additional installation modifications.

Product condition and practical application

The offered lambda sensor is a used item, which is an attractive solution for users looking for a factory component at a reasonable price. In practice, such parts often come from dismantled functional vehicles, thanks to which they retain their original operating parameters and can be successfully used as a replacement for a damaged sensor. Replacing the lambda sensor is particularly recommended in situations where symptoms such as increased fuel consumption, unstable idle, loss of dynamics, or error messages related to the combustion system appear. Using a properly selected sensor allows for restoring correct mixture control and limiting the risk of further damage to exhaust system components.

Benefits of using an original lambda sensor

Using an original lambda sensor in a Ford Focus Mk3 or Ford Kuga brings a number of practical benefits:

• better fit to the factory engine control unit and its fuel maps,
• more stable engine operation across the full load range,
• more predictable reactions to changes in load and operating temperature,
• support for maintaining correct exhaust emissions and protecting the catalytic converter. For the user, this means more comfortable vehicle operation, reduced risk of diagnostic errors, and the possibility of maintaining the efficiency of the exhaust system for longer. Choosing an original component from this group is particularly important in the case of more modern petrol units, where the engine control unit is sensitive to the quality of the signal from the sensors. If you are planning a comprehensive repair or upgrade of the engine area in your Ford and need other elements from the same group, such as additional sensors, exhaust gas temperature sensors, or oxygen sensors, check the available parts in the Lambda sensors and O2 sensors Ford category.

Support in selecting used sensors

When choosing a used lambda sensor, it is crucial to pay attention to compliance with the manufacturer's markings and the vehicle's technical parameters. It is worth using OEM data and reference numbers to ensure that the sensor will work correctly with the electrical installation and the control unit software. If you want to better understand how to safely select used sensors and control modules, what to pay attention to when comparing markings, and how to interpret differences in hardware and software versions, read the guide Used automotive electronics on board – why is it worth choosing second-hand ECU modules and sensors?. This is a practical supplement to your knowledge when planning the replacement of elements such as a lambda sensor.