Range Rover Sport L494 Injector Leak Off Fuel Pipe 3.0D D300 Diesel LR125521

Range Rover Sport L494 Injector Leak Off Fuel Pipe 3.0D D300 is an original component from the Lines, hoses and pipes group, designed for the diesel engine fuel supply system. Engineered specifically for the 3.0D D300 unit, it ensures stable fuel return and proper operation of the injection system under demanding operating conditions.

Specifications and technical data

• SKU: LR125521
• Mark: Range Rover
• Condition: Used
• OEM Part Number: K6D3-9K022-AA
• Substitutable numbers: LR125521, K6D39K022AA, K6D3-9K022-AA
• Fuel type: Diesel
• Part type: Pipe
• Category: Hoses, Lines & Pipes

Purpose and function in the fuel system

The leak-off fuel pipe is responsible for the controlled return of excess diesel fuel from the injectors to the supply system, which stabilizes pressure and reduces the risk of air entering the system. In a Diesel engine, this has a direct impact on the engine's refinement, ease of starting, and uniform fuel delivery under various loads.

Dedicated to the 3.0D D300 version in the Range Rover Sport L494 model, it features tailored geometry, the correct internal diameter, and the appropriate resistance to temperature and pressure typical of modern common rail systems.

Benefits of using an original pipe

Using an original leak-off pipe instead of a worn or leaking component allows you to:

• reduce pressure drops in the fuel rail and improve engine stability,
• minimize the risk of fuel leaks in the engine bay,
• maintain correct injection system performance parameters under high load,
• preserve the factory supply characteristics of the 3.0D D300 unit.

For Range Rover users, it is particularly important that the original leak-off pipe works with factory mounts and routing, which facilitates installation and reduces the risk of stress on the connections.

Installation and operational characteristics

The component from the Lines, hoses and pipes group is structurally prepared to work in a diesel environment, taking into account engine vibrations and temperature changes in the engine bay. The properly selected flexibility of the pipe makes it easy to route according to the factory path, without excessive bending or twisting.

When replacing, it is recommended to maintain the cleanliness of the fuel system, check the condition of the quick-connectors, and visually inspect the remaining pipes around the fuel rail and fuel filter to avoid subsequent leaks.

Application in Range Rover vehicles

The leak-off fuel pipe is designed for the diesel engine fuel supply system in the Range Rover Sport L494 with the 3.0D D300 unit. This ensures the user has compatibility with factory engine equipment, including injectors, the common rail, and the fuel return system to the tank.

Such a fit is particularly important in premium vehicles, where the fuel system operates under high pressure, and any leaks can lead to a drop in performance, ECU errors, or accelerated wear of injection components.

Condition of the item and cost-effectiveness

The offered leak-off fuel pipe is a used component, which allows for a significant reduction in repair costs compared to a new part, while maintaining the manufacturer's original specifications. This solution is particularly beneficial for comprehensive service work within the fuel system, where several components are replaced simultaneously.

If you want to better plan your repair and learn about the advantages of using original used parts, it is worth checking out our guide: Repairing a car after a collision using original used parts.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Range Rover and need other components from the same group, such as supply lines, flexible fuel hoses, or rigid return pipes, check out the available parts in the Range Rover Lines, hoses and pipes category.