Range Rover L405 Air Conditioner Evaporator Expansion Valve MF447510-0270

Range Rover L405 Air Conditioner Evaporator Expansion Valve is a precision component of the air conditioning system, responsible for controlling the expansion of the refrigerant in the evaporator. Thanks to its factory design for the Range Rover brand, it ensures consistent operation of the entire system and stable cabin cooling parameters, which translates into vehicle user comfort.

Specifications and technical data

• SKU: LR036434
• Mark: Range Rover
• Condition: Used
• OEM Part Number: LR036434
• Substitutable numbers: MF447510-0270, MF4475100270, LR036434, CPLA19E959BA, CPLA-19E959-BA
• Part type: A/C Expansion Valve
• Category: A/C Expansion Valves

Purpose and function in the air conditioning system

The presented valve belongs to the Expansion valves group and is mounted directly at the air conditioning evaporator. Its task is to precisely dose the refrigerant and maintain the appropriate pressure drop between the high and low-pressure sides, which allows the evaporator to effectively absorb heat from the vehicle's interior.

A properly selected expansion valve helps reduce air temperature fluctuations, decreases the risk of evaporator icing, and supports smooth compressor operation. In practice, this means more stable cooling, better control over the air conditioning, and less load on other system components.

Construction, fitment, and identification parameters

As a component developed for Range Rover vehicles, the valve has been designed with the correct fitment to the geometry of the evaporator and air conditioning lines in the L405 body in mind. The body construction, port layout, and mounting method are consistent with the manufacturer's factory specifications, which facilitates installation and reduces the risk of leaks.

The product has a dedicated OEM part number and assigned replacement numbers, which allows for unambiguous identification in service catalogs and parts selection systems. This makes it possible to verify compatibility with a specific air conditioning equipment version in a given Range Rover unit, also by using VIN-based searches.

Condition, service application, and benefits of installation

The offered item is in used condition, making it an attractive cost-effective alternative to new components while maintaining the original design specifications. This type of part is suitable for both standard air conditioning system repairs and when replacing the evaporator, lines, or receiver-drier, where it is necessary to restore full tightness and correct refrigerant flow regulation.

Replacing the expansion valve is particularly recommended in situations where the system shows symptoms such as uneven cooling, excessively high pressure on the low-pressure side, or suspected refrigerant contamination. Using an original solution dedicated to the Range Rover reduces the risk of compatibility issues and ensures predictable air conditioning performance after service.

Integration with other system elements and parts selection

When working on the air conditioning system, it is worth treating the expansion valve as a component that works in conjunction with the evaporator, compressor, condenser, and receiver-drier. Consistent selection of components, based on catalog numbers and manufacturer specifications, minimizes the risk of leaks, incorrect operating pressures, and accelerated compressor wear. In practice, this translates into stable air conditioning operation and fewer service returns.

If you are planning a comprehensive repair or upgrade of the air conditioning zone in your Range Rover and need other elements from the same group, such as additional valves, control elements, or compatible regulation components, check the available parts in the Range Rover Expansion valves category.

Technical support and service knowledge

When working with engine system elements and accessories, such as valves or control modules, current service knowledge regarding the principles of operation and selection of used components is helpful. In the context of exhaust gas recirculation systems and emission management, it is worth reading the article EGR: what it is and why it is worth considering used EGR valves, which discusses the practical aspects of using used components in modern power units.