Range Rover L322 Automatic Transmission Gearbox Cooler 4.4 V8 Petrol PFD000020

Range Rover L322 Automatic Transmission Gearbox Cooler 4.4 V8 Petrol is a specialized component of the transmission oil cooling system, designed to work with the automatic transmission in the 4.4 V8 petrol engine. Thanks to its precise design, it ensures stable thermal operating conditions for the transmission, which translates into greater gearbox durability and consistent gear shifting parameters. This solution is dedicated to users who expect efficient and predictable drivetrain performance under demanding operating conditions.

Specifications and technical data

• SKU: PFD000020
• Mark: Range Rover
• Condition: Used
• OEM Part Number: PFD000020
• Substitutable numbers: PFD000020, XH428K560AA, XH42-8K560-AA
• Fuel type: Petrol
• Gearbox type: Automatic
• Part type: Oil Cooler
• Category: Oil Coolers & Lines

Purpose and function in the drivetrain

The presented cooler is a component from the Oil coolers and lines group, responsible for dissipating heat from the oil operating in the automatic transmission. In the 4.4 V8 petrol unit, which generates high torque, oil temperature stabilization is crucial for maintaining proper operating pressure, protecting clutch packs, and reducing overheating during off-road driving, in traffic jams, or when towing.

A properly selected automatic transmission cooler supports:

• maintaining optimal transmission oil viscosity across a wide temperature range,
• reducing the risk of slipping and jerking during gear changes,
• stable operation of the transmission's hydraulic-electronic control system.

Compatibility with the 4.4 V8 petrol system and automatic transmission

The cooler has been designed to work with a petrol engine with a V8 layout and an automatic transmission, which means the oil flow and heat exchange surface are adapted to the loads characteristic of this drivetrain configuration. Such matching allows for maintaining the proper thermal balance during both calm road driving and conditions of increased thermal load.

In practice, this translates into:

• more predictable transmission behavior during dynamic acceleration,
• limiting the drop in transmission efficiency at high ambient temperatures,
• reducing the risk of premature wear of friction elements.

Product characteristics and advantages of use

As a component dedicated to the Range Rover, the automatic transmission cooler was developed with the vehicle's weight, drivetrain, and typical usage conditions in mind. Using an original design from the Range Rover group allows for maintaining factory flow and cooling parameters, which is particularly important in vehicles operated in off-road mode or with frequent use of the engine's full power range.

Key benefits of installation include:

• maintaining compliance with the factory oil cooling system architecture,
• reducing the risk of transmission overheating under high thermal load,
• support for smooth transmission operation across the entire operating temperature range.

Condition, selection, and installation aspects

The offered item is in used condition, which allows for an economical repair or replacement of a damaged cooler while maintaining the proper operating parameters of the system. When choosing this product, it is worth paying attention to compatibility with the vehicle's drivetrain configuration – especially regarding fuel type and transmission type – to ensure correct integration into the existing oil and cooling line system.

Before installation, it is recommended to:

• verify the tightness of the oil cooling system,
• check the condition of the medium supply and return lines,
• check the correct operation of the transmission after bleeding and topping up the oil.

Technical support and additional materials

During the summer, the cooling system – both for the engine and transmission oil – operates under particularly demanding conditions. To better understand the impact of high temperatures on cooler efficiency and the potential for savings when using aftermarket parts, it is worth reading the guide Summer heat vs. cooling system: used coolers and fans as a guarantee of savings, which discusses practical aspects of operating and selecting used cooling components.

If you are planning a comprehensive repair or upgrade of the lubrication and oil cooling area in your Range Rover and need other components from the same group, such as additional coolers, oil lines, or connecting elements, check the available parts in the Range Rover oil coolers and lines category.