Land Rover Discovery Sport L550 Water Coolant Pipe Hose Line 2.0 G4D318B402BB

The Land Rover Discovery Sport L550 Water Hose Pipe 2.0 is an original cooling system component designed for precise coolant flow in the 2.0 engine. With factory-fitted compatibility for the Discovery Sport L550, it ensures a stable connection between cooling system components and minimizes the risk of leaks. A used OEM part is a sensible choice for cooling system maintenance when you prioritize proven fitment and maintaining the original hose geometry.

Specifications and technical data

• SKU: LR104391
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR104391
• Substitutable numbers: LR104391, G4D318B402BB, G4D3-18B402-BB
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The water hose pipe in the Land Rover Discovery Sport L550 is responsible for directing coolant flow between key engine components of the 2.0 engine. A correctly selected hose:

• maintains proper coolant flow within the designated circuit,
• minimizes pressure drops due to its matched diameter and shape,
• reduces the risk of engine overheating,
• ensures stable mounting at factory attachment points.

Thanks to its design conforming to the manufacturer's specifications, the water pipe works in conjunction with other components of the Cooling System Hoses and Pipes, maintaining the correct geometry of the entire circuit.

Advantages of Using an Original Land Rover Hose

Using an original hose in the Discovery Sport L550 allows you to maintain the cooling system's operating parameters at the level intended by the manufacturer. Key benefits include:

• Factory Fitment – compatibility with mounting points, connector diameters, and hose routing within the engine bay.
• Stable System Operation – reduced risk of micro-leaks, air ingress, and uncontrolled fluid loss.
• Compatibility with Other Cooling System Components – the hose works seamlessly with original connectors, clamps, and mounting elements.
• Hassle-Free Installation – no need for modifications or adjustments to length and shape.

By choosing this part, you opt for compatibility with the 2.0 engine design and predictable system behavior under various thermal load conditions.

Characteristics of a Used Part

The water hose pipe offered as a used component is a solution for users seeking OEM parts at a more attractive price while maintaining original specifications. This type of part:

• retains its original shape and mounting points,
• is suitable as a replacement in case of damage, cracking, or deformation of the existing hose,
• allows for restoring proper coolant circulation without altering the system's design.

This is a practical solution for routine repairs where technical conformity to the original and maintaining the correct operation of the Land Rover Discovery Sport L550 cooling system are priorities.

Technical Support and Cooling System Knowledge

When replacing the water hose, it's advisable to check the overall condition of the cooling system – the integrity of other hoses, the condition of the radiator, thermostat, and water pump. To better understand the impact of efficient coolant circulation on engine longevity, read the article Engine Cooling System – Overheating, Repair, and Used Radiators, which discusses practical aspects of diagnostics and servicing.

Related Land Rover Cooling System Components

If you are planning a comprehensive repair or upgrade of the engine area in your Land Rover and need other parts from the same group, such as additional pipes, flexible hoses, or connecting sections, check the available parts in the Land Rover Cooling System Hoses and Pipes category.