Range Rover L405 Fuel Feed Line Injection Hose Pipe 4.4 Diesel AH4Q-9J280-BA

Range Rover L405 Fuel Injector Line 4.4 Diesel AH4Q-9J280-BA is a specialized fuel system component designed for 4.4 Diesel engines in Land Rover vehicles. It is responsible for precisely delivering fuel to the injectors, which is crucial for stable engine operation and correct combustion characteristics.

Specifications and technical data

• SKU: LR022587
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR022587
• Substitutable numbers: LR022587, AH4Q-9J280-BA, AH4Q9J280BA
• Fuel type: Diesel
• Part type: Line
• Rim width: 9
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The 4.4 Diesel fuel injector line operates under high pressure, typical of modern diesel engines. Its task is to maintain sealing and a stable flow of diesel fuel between the fuel rail and the injector, which affects:

• correct fuel metering across the entire engine load range,
• smooth engine operation at idle and under load,
• reduction of pressure drops in the common rail system.

A properly selected injector line is particularly important in large-capacity engines, such as the 4.4 Diesel, where fuel supply stability directly translates to operational refinement and durability of the components.

Compatibility and Fit for Range Rover L405

This component has been designed for use in the Range Rover L405 model with a diesel engine. This means that:

• the line's geometry is adapted to the factory routing in the engine bay,
• the connection ends are compatible with the original ports on the fuel rail and injector,
• the stiffness and internal diameter are selected according to the requirements of the 4.4 Diesel injection system.

This ensures that installation is similar to the factory process, without the need for modifications or additional adapters.

Technical and Operational Characteristics

As a component in the Lines, Hoses, and Tubes category, the injector line operates in a demanding thermal and pressure environment. Its construction is prepared for:

• operation with diesel fuel in high-pressure systems,
• resistance to vibrations generated by the 4.4 Diesel engine,
• maintaining sealing over a long service life with proper installation.

Choosing the correct injector line not only affects engine performance but also safety – leaks in the high-pressure fuel area can lead to serious damage to the injection system.

Condition, Origin, and Service Application

The offered line is a used part, allowing for economical repair of the fuel system while maintaining compliance with the original Land Rover specification. This type of part is particularly suitable for situations where:

• a quick replacement of a damaged injector line is necessary,
• cost optimization is important while maintaining original geometry and fit,
• compatibility with existing 4.4 Diesel engine components is crucial.

Before installation, standard visual inspection is recommended, along with installation according to the vehicle manufacturer's procedures, observing correct tightening torques and system bleeding procedures.

Land Rover Lines, Hoses, and Tubes – Selection and System Expansion

If you plan to replace other components from the same group during fuel or cooling system service, it is worth considering selecting additional components from the same line. If you need to purchase other Land Rover lines, hoses, and tubes, you can use the dedicated category: Land Rover lines, hoses, and tubes.

For users considering the use of used parts in key vehicle systems, an expert guide discussing facts and myths about powertrain components may be helpful. More information on the approach to used powertrain components can be found in the article: Why Buy Used Gearboxes and Engines – Facts Instead of Myths.