Jaguar XK8 X100 Range Rover Sport L320 Air Mass Flow Meter Sensor 1X43-12B579-AB

Jaguar XK8 X100 Range Rover Sport L320 Air Mass Flow Meter Sensor is a component from the Air and fuel intake sensors group, designed for precise measurement of the air intake volume in Jaguar XK8 X100 and Range Rover Sport L320 engines. A properly selected air mass flow meter stabilizes engine operation, supports correct fuel dosing, and helps maintain smooth, predictable acceleration characteristics.

Specifications and technical data

• SKU: 1X43-12B579-AB-1
• Mark: Jaguar
• Condition: Used
• OEM Part Number: 1X43-12B579-AB
• Substitutable numbers: PHF000140, 1X43-12B579-AB, 1X4312B579AB, C2S2670
• Part type: Sensor
• Category: Air Intake & Fuel Sensors

Purpose and function of the air mass flow meter

The air mass flow meter in the Jaguar XK8 X100 and Range Rover Sport L320 is responsible for measuring the mass of air drawn into the engine, which is crucial for the operation of the fuel injection system. Based on the signal from the sensor, the engine control unit selects the fuel dose, corrects the mixture composition, and influences the engine's performance across the entire rev range. A functional sensor from this group helps reduce issues such as rough idling, power loss, or increased fuel consumption. Replacing a worn-out component with the correct air mass flow meter dedicated to Jaguar and Range Rover restores proper throttle response and stabilizes combustion parameters.

Benefits of using a dedicated sensor

Using an air mass flow meter matched to specific Jaguar XK8 X100 and Range Rover Sport L320 models ensures:

• proper cooperation with the factory engine control unit,
• stable signal values across the full load range,
• more predictable acceleration and smooth power delivery,
• reduced risk of warning lights related to the air-fuel mixture. As a result, the air mass flow meter from the Air and fuel intake sensors category is an important element for restoring correct engine performance parameters, especially in vehicles that have been in operation for many years.

Product characteristics and fitment

The offered item comes from the Jaguar brand, which means the construction is consistent with the vehicle manufacturer's factory specifications. The sensor is designed for installation in the intake system, in the location provided by the engine design, while maintaining the original air flow geometry. The product has an assigned OEM part number and corresponding interchangeable numbers, which facilitates verification of compatibility with a specific engine version. Before purchasing, it is recommended to compare the markings with the vehicle documentation or the existing component to confirm full compatibility with your specific Jaguar XK8 X100 or Range Rover Sport L320 configuration.

Condition of the item and service application

The air mass flow meter is offered in used condition, making it an attractive service solution for users looking for parts at a reasonable price while maintaining proper operating parameters. This type of component is particularly useful when diagnosing problems with the air-fuel mixture, power loss, or increased fuel consumption. Replacing the air mass flow meter is a typical service operation in high-mileage vehicles. A correctly selected component helps restore stable engine operation without the need to interfere with other intake system components.

More solutions in the same group

If you are planning a comprehensive repair or upgrade of the engine area in your Jaguar and need other elements from the same group, such as additional air flow sensors, intake temperature measurement elements, or components related to fuel dosing, check the available parts in the Jaguar Air and fuel intake sensors category.

How to safely choose used engine electronics

When selecting a used air mass flow meter, it is worth knowing the basic principles of evaluating engine electronics to reduce the risk of an unsuccessful purchase. Practical tips on verifying compatibility, interpreting markings, and testing modules and sensors can be found in our guide: A second life for electronics – when is it worth choosing used engine control units, comfort modules, and parking sensors?