Land Rover Discovery 4 L319 High Pressure Fuel Pump 3.0 Diesel AH2Q-9B395-AD

The Land Rover Discovery 4 L319 Fuel Injection Pump 3.0 Diesel AH2Q-9B395-AD is a component from the High-Pressure Fuel Pumps group, designed for 3.0 Diesel engines in Land Rover vehicles. This OEM solution helps restore correct fuel system pressure, stable engine operation, and proper fuel dosage across the entire load range.

Specifications and technical data

• SKU: LR041034
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR041034
• Substitutable numbers: LR041034, AH2Q-9B395-AD, AH2Q9B395AD
• Fuel type: Diesel
• Part type: High Pressure Pump
• Category: High Pressure Fuel Pumps

Purpose and Role in the Fuel System

The presented high-pressure pump is a key component of the diesel engine fuel system, responsible for generating the necessary high fuel pressure for the injectors. In the Land Rover Discovery 4 L319 with a 3.0 Diesel engine, it is responsible for:

• precise diesel fuel metering to the common rail,
• maintaining stable operating pressure under various load conditions,
• cooperating with the engine control electronics to optimize combustion.

By maintaining its factory operating characteristics, the pump supports smooth engine running, correct throttle response, and reduced smoke during acceleration.

Benefits of Using an Original High-Pressure Pump

Using an original pump from the High-Pressure Fuel Pumps group in a Land Rover provides a range of practical operational benefits:

• Compatibility with the Diesel Injection System – maintaining parameters specified by the vehicle manufacturer.
• Proper cooperation with sensors and the engine control unit, facilitating diagnostics and calibration.
• Reduced risk of starting problems, power drops, or uneven idling.
• The ability to use the existing fuel system architecture without modifications.

The pump designed for a Diesel engine is structurally adapted to work with diesel fuel, its viscosity, and the required pressure range, which is crucial for the durability of the entire system.

Condition, Selection, and Installation in the Vehicle

The offered pump is a used part, allowing for an economical repair of the fuel system while maintaining the original Land Rover specification. Before installation, it is recommended to:

• verify compatibility using the OEM number or replacement numbers,
• check the fuel line seals and the condition of the fuel filter,
• perform system adaptation/bleeding according to the service procedure.

To select the correct component for a specific version of the Discovery 4 L319, it is advisable to use the manufacturer's designations and vehicle data, which minimizes the risk of incorrect fitting.

Technical Support and Further Knowledge on Fuel Systems

For users who want to better understand the operating principles of diesel engine fuel systems, diagnostics, and the regeneration process, the blog article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Regeneration will be helpful. It discusses, among other things, selecting parts by OEM numbers and typical symptoms of high-pressure pump wear.

If you are planning a comprehensive repair or upgrade of the fuel system area in your Land Rover and need other components from the same group, such as high-pressure pumps for different engine versions, fuel supply components, or parts that cooperate with the common rail, check the available parts in the Land Rover High-Pressure Fuel Pumps category.

Summary

The Land Rover Discovery 4 L319 Fuel Injection Pump 3.0 Diesel AH2Q-9B395-AD is an OEM solution for diesel engines that helps restore the correct operating parameters of the injection system. Choosing an original high-pressure pump is an investment in stable engine performance, proper vehicle dynamics, and compliance with the original Land Rover factory specification.