Range Rover L405 Sport L494 Air Suspension Tank Reservoir Vessel DPLA-5B709-AA

Range Rover L405 Sport L494 Air Suspension Tank Reservoir Vessel is a component of the Automatic Level Control system, responsible for storing compressed air for the air suspension in Land Rover vehicles. It ensures stable operating pressure, which translates into predictable operation of the air springs, uniform vehicle height maintenance, and driving comfort under various load conditions.

Specifications and technical data

• SKU: DPLA-5B709-AA
• Mark: Land Rover
• Condition: Used
• OEM Part Number: DPLA-5B709-AA
• Substitutable numbers: DPLA-5B709-AA, DPLA5B709AA, LR045311
• Part type: Accumulator
• Category: Self-Levelling Suspension Parts

Purpose and function in the suspension system

The presented reservoir is part of the factory air suspension system used in Land Rover L405 and L494 series models. Its task is to store an adequate amount of compressed air so that the system can react quickly to load changes, height adjustments, and the operation of off-road and on-road modes. Thanks to the use of a dedicated reservoir, the Automatic Level Control system can maintain stable vehicle geometry, which improves handling, braking efficiency, and even tire wear. The properly selected capacity and design of the reservoir reduce the frequency of compressor activation, which promotes its durability.

Benefits of using an original Land Rover component

The original Land Rover air suspension reservoir provides:

• precise fitment to factory mounts and pneumatic lines,
• compliance with the operating parameters of the suspension control unit,
• stable pressure maintenance throughout the entire operating range of the system,
• consistency with other system components, such as the compressor and air springs. Using an original component reduces the risk of leaks, improper suspension operation, or system errors that may occur with parts of uncertain origin. This is particularly important in premium class vehicles, where the air suspension is responsible not only for comfort but also for safety and predictable vehicle behavior.

Condition, installation, and service aspects

The item is offered as a used part, which allows for a significant reduction in repair costs while maintaining the manufacturer's original specifications. Replacing the reservoir is a standard service operation within the pneumatic system and should be performed in accordance with venting procedures and pneumatic line leak testing. Before installation, it is recommended to:

• verify the condition of pneumatic lines and connectors,
• check the operation of the compressor and control valves,
• inspect for any leaks throughout the entire suspension system. Such an approach allows for restoring the proper operation of the system during a single service intervention and reduces the risk of further vehicle downtime.

Practical application and driving comfort

A functional air suspension reservoir has a direct impact on how a Land Rover behaves on the road and off-road. Stable pressure in the system enables smooth raising and lowering of the vehicle body, maintenance of the set height under full load, and proper operation of driving modes. The driver experiences this as more predictable vehicle reactions, better shock absorption, and more confident handling at higher speeds. In vehicles equipped with advanced off-road systems, a functional Automatic Level Control system is crucial for maintaining ground clearance and suspension geometry, which translates into the effectiveness of overcoming obstacles and protecting the undercarriage.

Related components and further knowledge

If you are planning a comprehensive repair or upgrade of the suspension area in your Land Rover and need other elements from the same group, such as air springs, a compressor, or pressure lines, check the available parts in the Land Rover Automatic Level Control category. For a better understanding of the relationship between suspension operation and the characteristics of the drivetrain and gearbox, it is worth reading the guide on transmissions – you will find practical tips in the article Gearbox: manual, automatic, or DSG – common faults and a guide to buying a used gearbox. If you want to optimize service costs while maintaining OEM quality, the material on repair economics, available in the article Rising repair costs and the boom in used parts – how to save on car maintenance?, may also be helpful.