Ford Transit Mk8 Exhaust Gas Temperature Sensor 2.0 Diesel GK31-12B591-AB

Ford Transit Mk8 Exhaust Gas Temperature Sensor 2.0 Diesel is a precision exhaust system component responsible for the accurate measurement of exhaust gas temperatures in a diesel engine. A properly functioning exhaust gas temperature sensor assists the engine control unit in monitoring the combustion process and the operation of the exhaust aftertreatment system, which translates into stable engine performance and reduced emissions. Choosing an original Ford solution in this component group allows you to maintain the factory operating parameters of the 2.0 Diesel engine.

Specifications and technical data

• SKU: GK31-12B591-AB
• Mark: Ford
• Condition: Used
• OEM Part Number: GK31-12B591-AB
• Substitutable numbers: GK31-12B591-AB, GK3112B591AB, 2450806, GK31-12B591-AC, GK3112B591AC
• Fuel type: Diesel
• Category: Oxygen Sensors

Purpose and function in the exhaust system

The exhaust gas temperature sensor in the Ford Transit Mk8 operates directly in the exhaust gas stream, transmitting information about the current temperature in the exhaust system to the engine control unit. Based on this data, the engine management system regulates, among other things, the fuel dose and the operating strategy of the exhaust aftertreatment system, which is particularly important in Diesel units. A functional sensor helps maintain stable engine operating conditions, reduces the risk of overheating exhaust components, and supports the proper operation of filters and catalytic converters.

Benefits of using an original Ford sensor

Using an exhaust gas temperature sensor dedicated to the Ford Transit Mk8 ensures:

• preservation of factory exhaust gas temperature measurement characteristics,
• proper cooperation with the engine control unit software,
• stable operation of the 2.0 Diesel unit across the full load range,
• reduction in the risk of diagnostic errors related to the exhaust system.

Thanks to its precise fit for the specific application, the sensor from this group of components allows for seamless integration with the existing installation and facilitates diagnostics during subsequent service inspections.

Performance characteristics and installation

The presented exhaust gas temperature sensor belongs to the group of control and measurement elements, classified in the Lambda sensors and O2 sensors category. It is a part designed to operate in demanding thermal conditions, which is why it is crucial to maintain the correct mounting position and ensure proper connection to the vehicle's electrical harness. In practice, the replacement involves removing the old component, cleaning the socket in the exhaust system, and installing the sensor while maintaining the correct tightening torque.

The product is offered in a used condition, which allows for an economical vehicle repair while maintaining the manufacturer's original specifications. For workshops and fleet users, this represents a cost-effective solution while maintaining consistency with the factory measurement system.

Selection by numbers and compatibility

The exhaust gas temperature sensor for the Ford Transit Mk8 has an assigned OEM part number and interchangeable numbers, which facilitates unambiguous identification in catalogs and service systems. When selecting, it is recommended to verify compatibility by part number and vehicle data to ensure full compatibility with the specific 2.0 Diesel engine version. This approach minimizes the risk of installing the wrong component and speeds up the service process.

To better understand how to safely use used modules and sensors in modern cars, it is worth reading the guide discussing selection by VIN/OEM, compatibility issues, and practical application examples: Used automotive electronics – a guide to selecting ECU modules and sensors.

Service expansion within the Ford exhaust measurement system

If you are planning a comprehensive repair or upgrade of the exhaust measurement area in your Ford and need other components from the same group, such as additional temperature sensors, control probes, or exhaust composition monitoring elements, check the available parts in the Ford Lambda sensors and O2 sensors category.