Land Rover Discovery 4 L319 Hydro Power Steering Pump Return Pipe Hose LR013790

The Land Rover Discovery 4 Power Steering Hydraulic Return Hose is an original steering system component designed to work with the factory pump in this model. It ensures stable hydraulic fluid flow in the return circuit, which translates to proper steering system operation and driving comfort. This is a practical solution for users looking for a perfectly matched component for their specific Discovery 4 configuration.

Specifications and technical data

• SKU: RHD-LR013790
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR013790
• Part type: Power Steering Pump
• Category: Power Steering Pumps

Purpose and Function in the Power Steering System

The return hose works in conjunction with the hydraulic power steering pump, responsible for draining fluid from the steering rack back to the reservoir. A correctly selected component in this part of the system:

• maintains the correct operating pressure in the hydraulic system,
• reduces the risk of cavitation and air ingress into the system,
• supports the smooth operation of the power steering pump,
• indirectly affects the smoothness and ease of steering wheel movement.

Thanks to its design tailored to the specific model, the hose maintains proper routing within the engine bay, reducing mechanical stress and the risk of abrasion.

Why Use an Original Return Hose

Using a component from the same product line as the factory Land Rover parts ensures the integrity of the entire power steering system. In practice, this means:

• secure fit with the power steering pump and other hydraulic components,
• preservation of the original hose routing and mounting points,
• reduced risk of leaks due to improper installation or a poorly shaped aftermarket part,
• easier diagnosis of potential steering system faults.

For users who want to maintain their power steering system in a configuration close to the factory setup, such a hose is a more predictable solution than universal aftermarket alternatives.

Component Condition and Installation Aspects

The offered hose comes from the power steering pump category, meaning it is designed for operation in the demanding environment of hydraulic systems. Before installation, it is recommended to:

• check the entire power steering system for leaks,
• verify the condition of the hydraulic fluid and replace it if necessary,
• inspect mountings and clamps,
• bleed the system after completing the service work.

Proper installation and system bleeding help reduce pump noise and improve the precision of the steering system's operation.

Technical Support and Parts Selection

When selecting a return hose for a specific Discovery 4 version, it is advisable to use manufacturer markings and vehicle data to avoid installation errors. If in doubt, it is a good idea to compare the shape and length of the hose with the part removed from the vehicle, which allows for quick verification of compatibility.

If you want to better understand the relationships between individual components in the engine bay, an article describing the diagnosis and selection of engine supply system components may be helpful: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. Although it concerns a different system, it demonstrates the approach to identifying parts by manufacturer markings and technical parameters.

Other Land Rover Power Steering Pumps

If you are also looking for other Land Rover power steering pumps for your vehicle, check out our dedicated category: Land Rover Power Steering Pumps. This will allow you to easily match the return hose with the appropriate pump and assemble the entire system based on components from a single, cohesive product group.