Range Rover Evoque L551 Coolant Temperature Sensor 2.0 Diesel 3L8A-12A648-AA

Range Rover Evoque L551 Coolant Temperature Sensor 2.0 Diesel is a precision component from the Engine sensors and switches group, responsible for reliable reading of the thermal parameters of the power unit. A properly selected temperature sensor ensures stable operation of the diesel engine, correct fuel dosing, and safe operating conditions across various load ranges.

Specifications and technical data

• SKU: 3L8A-12A648-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: 3L8A-12A648-AA
• Substitutable numbers: 3L8A-12A648-AA, 3L8A12A648AA, LR105595
• Fuel type: Diesel
• Part type: Sensor
• Category: Engine Sensors & Switches

Application in the 2.0 Diesel engine of the Range Rover Evoque L551

The presented temperature sensor is designed for the Diesel powertrain in the Range Rover Evoque L551 model with a 2.0 engine. It is responsible for transmitting information about the current temperature to the engine control unit, which has a direct impact on:

• fuel dosage selection and injection strategy under various operating conditions,
• control of radiator fans and cooling system components,
• protection of the power unit against overheating,
• idle speed stability and cold start comfort.

Thanks to accurate temperature readings, the controller can maintain engine operating parameters within a safe range, which translates into predictable performance and reduced risk of failure.

Technical characteristics and role in the control system

The temperature sensor in a diesel engine acts as a measuring element in the engine management system. In practice, this means that it:

• operates in direct contact with a medium of variable temperature (e.g., coolant or a structural engine component),
• sends an electrical signal to the controller depending on the current temperature,
• influences strategies for mixture control, boost, and the cooling system.

A properly functioning temperature sensor helps reduce fuel consumption, maintain stable engine operation, and decrease the thermal load on components working with the engine.

Original origin and fitment for Range Rover

The component comes from the Range Rover line, which means it is designed in accordance with the manufacturer's factory standards. As a result, the sensor is matched to the electrical and mechanical architecture of the Evoque L551 power unit, and its installation does not require any modifications to the wiring or socket adaptations.

Original origin translates into:

• consistency with the engine control unit software,
• correct signal characteristics across the entire range of operating temperatures,
• easier diagnostics during subsequent service inspections.

Used condition and benefits of choosing dismantled parts

The offered sensor is in used condition, sourced from professional dismantling. This solution allows for lower repair costs while maintaining compliance with the vehicle's factory specifications. Compared to cheap replacements, the original used sensor provides:

• better fitment to the electrical installation and controller,
• preservation of operating parameters specified by the vehicle manufacturer,
• reduced risk of issues with controller errors and warning lights.

This is a practical solution for users who want to restore the efficiency of the temperature measurement system without sacrificing original quality.

Support in sourcing used parts

If you are planning a more extensive repair or service of your car and want to select more components from dismantling in one place, it is worth learning the principles of effective component sourcing. Practical tips on how to safely choose original used parts and avoid problematic replacements can be found in the article: Comprehensive supply of used car parts – One-Stop-Shop guide.

If you are planning a comprehensive repair or upgrade of the engine area in your Range Rover and need other components from the same group, such as position sensors, switches, or other measuring elements, check the available parts in the Range Rover engine sensors and switches category.