Range Rover L405 Fuel Return Pipe Hose Line 4.4 SDV8 Diesel AH4Q-9K022-CC

Range Rover L405 Fuel Return Hose 4.4 SDV8 Diesel AH4Q-9K022-CC is a specialized fuel system component designed for 4.4 SDV8 diesel engines. It is responsible for the safe return of fuel from the injection rail to the tank, stabilizing the operation of the entire common rail system in the Range Rover L405.

Specifications and technical data

• SKU: LR022590
• Mark: Range Rover
• Condition: Used
• OEM Part Number: LR022590
• Substitutable numbers: LR022590, AH4Q9K022CC, AH4Q-9K022-CC
• Fuel type: Diesel
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The fuel return hose in the 4.4 SDV8 Diesel engine operates under high pressure and temperature conditions, so its correct selection directly impacts the stability of the engine's operation. It is responsible for:

• controlled return of excess fuel from the injection system to the tank,
• maintaining proper working pressure in the injection rail,
• reducing the risk of air ingress into the fuel system of a diesel engine,
• safe fuel discharge without leaks or performance drops.

The dedicated fitment for the Range Rover L405 with the 4.4 SDV8 Diesel unit allows for the preservation of the fuel system's factory operating characteristics and reduces the risk of starting problems or uneven engine running.

Construction, Fitment, and Installation

This part belongs to the category of Hoses, Pipes, and Tubes, meaning it has been designed for precise fuel routing within the engine bay. The hose's construction is adapted to:

• the geometry of the 4.4 SDV8 Diesel engine in the Range Rover L405,
• factory mounting points on the body and engine accessories,
• the quick connectors and spigots used in the fuel system.

This ensures an organized installation process, maintaining the original hose routing, which minimizes the risk of chafing, vibration, and leaks during operation.

Performance Characteristics and Benefits of Use

Choosing an original fuel return hose for the Range Rover L405 with a 4.4 SDV8 diesel engine allows for the preservation of fuel system operating parameters close to factory specifications. The use of this component promotes:

• stable injector operation due to the proper return of excess fuel,
• reduced risk of leaks at critical points in the fuel system,
• maintaining appropriate fuel temperature through circulation,
• minimizing power loss resulting from incorrect system pressure.

The product is marked as used, which is a cost-effective solution for users seeking original components at a reasonable price, while ensuring proper fitment for a specific diesel engine configuration.

Selection by Part Numbers and Online Purchase Support

The fuel return hose has an OEM part number and related interchange numbers, which facilitates precise identification of the component for a specific version of the Range Rover L405 with a diesel engine. When selecting, it is advisable to compare the markings with the vehicle's documentation or the existing part to ensure full compatibility with the fuel system.

If you wish to learn more about verifying component compatibility by part numbers, you will find practical tips in the guide Risk-Free Online Parts Shopping – How to Verify Component Compatibility by OEM Numbers, which describes proven methods for selecting parts based on manufacturer markings.

Other Hoses, Pipes, and Tubes for Range Rover

For users looking for other hoses, pipes, and tubes for Range Rover, a dedicated category has been prepared where you can find a wide selection of fuel, cooling, or vacuum system components. Check out the available Range Rover hoses, pipes, and tubes to select complete service solutions for your vehicle.