Audi Q3 8U A4 B8 Fuel Pump Injector Unit 2.0 TDI Engine 04L130755D

Audi Q3 8U A4 B8 Fuel Pump Injector Unit is a component from the High-pressure fuel pumps group, designed for Audi diesel engines paired with a manual transmission. This solution is engineered to ensure stable fuel supply to the engine unit, precise fuel metering, and the maintenance of correct operating parameters for the injection system.

Specifications and technical data

• SKU: 04L130755D-2
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L130755D
• Substitutable numbers: 04L130755D, 04L 130 755 D, 0445010537, 0 445 010 537, 04L130101, 04L 130 101
• Fuel type: Diesel
• Gearbox type: Manual
• Part type: Fuel Injector Pump
• Category: High Pressure Fuel Pumps

Purpose and role in the fuel system

The described fuel pump is dedicated to 2.0 TDI Diesel units used in Audi Q3 8U and Audi A4 B8 models. It is responsible for generating high pressure in the fuel rail, which enables the injectors to function correctly and ensures proper engine performance across the entire load range.

When paired with a manual transmission, the pump supports stable torque development, reduces power drops during dynamic acceleration, and helps maintain proper combustion parameters, which translates into a predictable throttle response.

Benefits of using an original Audi pump

Using a pump from the High-pressure fuel pumps family designed for Audi allows you to maintain the factory characteristics of the injection system. Proper matching to the specific engine and transmission configuration reduces the risk of starting issues, rough idling, or power drops under load.

The main advantages of this solution include:

• compatibility with factory engine management and fuel system accessories,
• maintenance of correct operating pressure across the entire RPM range,
• the ability to restore proper injection system operation after a pump failure,
• reduction of the risk of additional malfunctions resulting from part incompatibility.

Condition, verification, and part matching

The offered pump is a used component, which allows for an economical repair of the fuel system while maintaining original specifications. Before installation, it is recommended to perform a standard check of the fuel system (filter, lines, injectors) to ensure the newly installed component operates under proper conditions.

It is advisable to base the pump selection on the OEM number and available interchangeable numbers, as well as vehicle data (model, generation, engine type, transmission type). This minimizes the risk of incompatibility and ensures that the injection system's operating parameters will be consistent with the manufacturer's specifications.

Fuel system operation and diagnostics

To maximize the service life of the fuel pump, it is crucial to use high-quality fuel, replace the fuel filter regularly, and perform periodic fuel rail pressure diagnostics. In the event of symptoms such as starting difficulties, power drops, or error messages related to fuel pressure, it is worth conducting a detailed analysis of the entire system's operation.

For users who want to better understand the principles of operation and proper maintenance of such components, an article comprehensively describing injectors, pumps, and the fuel tank will be helpful – you can find it here: Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration.

Repair expansion and other Audi high-pressure pumps

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as additional pumps, control elements, or injection system accessories, check the available parts in the Audi high-pressure fuel pumps category.

If you are consciously choosing used parts, also with ecological and economic aspects in mind, it is worth reading the material discussing the benefits of this solution: Eco-driving: discover the benefits of used car parts.