Audi S6 C7 S7 4G High Pressure Fuel Pump 4.0 TFSI V8 Petrol 079127025AJ

Audi S6 C7 S7 4G High Pressure Fuel Pump 4.0 TFSI V8 is an original petrol fuel system component designed for V8 TFSI engines. Thanks to its factory design, it ensures stable fuel pressure across the entire load range, which translates into proper engine operation and predictable performance. This is a solution for users who expect compliance with manufacturer requirements and wish to maintain the correct operating parameters of the injection system.

Specifications and technical data

• SKU: 079127025AJ
• Mark: Audi
• Condition: Used
• OEM Part Number: 079127025AJ
• Substitutable numbers: 079127025AJ, 079 127 025 AJ
• Fuel type: Petrol
• Part type: Fuel Injector Pump
• Category: Fuel Pumps & Sending Units

Purpose and role in the fuel system

The presented high-pressure pump operates in the direct petrol injection system of the 4.0 TFSI V8 engine, where it is responsible for generating sufficiently high fuel pressure on the fuel rail. This component works with the low-pressure part of the system, ensuring proper fuel supply to the injectors during dynamic load changes, typical for high-power units. Thanks to a design tailored to the specific requirements of the TFSI engine, the pump allows for maintaining stable operating parameters both during calm driving and during intense acceleration. A properly selected component of this class reduces the risk of power drops, uneven engine operation, or problems with warm starts.

Benefits of using an original Audi pump

Using an original high-pressure pump in Audi S6 C7 and S7 4G models allows you to maintain the factory characteristics of the fuel system. The component designed by the vehicle manufacturer is matched in terms of performance, pressure characteristics, and compatibility with the engine control electronics.

• Consistency with engine control unit software – the pump operates within the parameters specified by the manufacturer.
• Adequate performance for the 4.0 TFSI V8 unit, even under higher loads.
• Reduced risk of adaptation issues and the need for system modifications. For users who expect predictable vehicle behavior after replacing a fuel system component, choosing an original pump is a technically safe solution that is consistent with the vehicle's design assumptions.

Technical characteristics and fuel

The pump belongs to the group of components referred to as Fuel pumps and level sensors, responsible for transporting and monitoring the amount of fuel in the vehicle. In this case, we are dealing with a component designed for a petrol fuel system, which is crucial when selecting parts for a specific engine version. Adaptation for petrol fuel means that the pump's construction, the seals used, and the operating parameters are optimized for the properties of this type of fuel. Proper selection of the component for the fuel type reduces the risk of leaks, accelerated wear, or improper operation of the injection system.

Condition, selection, and installation

The offered pump is a used component, which in practice means the possibility of an economical replacement while maintaining the original manufacturer's specifications. For this type of subassembly, it is particularly important to match it by part number and interchangeable numbers to ensure full compatibility with the given engine version and vehicle year. Before installation, it is recommended to:

• verify compatibility based on manufacturer markings and engine configuration,
• check the condition of connection sockets and fuel lines,
• use new seals in accordance with service recommendations. Professional installation and the correct fuel system bleeding procedure help reduce the risk of leaks and ensure stable pump operation in the long term.

Selection support and additional materials

If you are planning a comprehensive repair or upgrade of the fuel system area in your Audi and need other elements from the same group, such as low-pressure pumps, power modules, or fuel level sensors, check the available parts in the Audi fuel pumps and level sensors category. When selecting used fuel system components and other subassemblies, it is worth using manufacturer markings and catalog data to avoid compatibility problems. Practical tips on selecting used components, including working with OEM and reference numbers, can be found in the guide: how to professionally select used car parts, saving time and nerves. For components that work with engine control electronics, information from the article dedicated to modules and sensors may also be helpful, where the principles of selection by numbers and issues of hardware and software compatibility are discussed: used car electronics on board – why it is worth choosing second-hand ECU modules and sensors.