Audi A6 C6 RS4 B7 High Pressure Fuel Pump 4.2 FSI Petrol Right O/S 079127026C

Audi A6 C6 RS4 B7 High Pressure Fuel Pump 4.2 FSI Petrol Right O/S is an original component from the High Pressure Fuel Pumps group, designed for 4.2 FSI petrol engines. It ensures precise fuel delivery to the engine unit under high pressure, which translates into stable operation, proper dynamics, and correct interaction with the injection system. This solution is dedicated to users expecting a technically matched component for the right side of the fuel system.

Specifications and technical data

• SKU: 079127026C
• Mark: Audi
• Condition: Used
• OEM Part Number: 079127026C
• Substitutable numbers: 079127026C, 079 127 026 C, 079 127 026 AB, 079127026AB
• Location on the vehicle: Right
• Fuel type: Petrol
• Part type: High Pressure Pump
• Category: High Pressure Fuel Pumps

Purpose and function in the fuel system

The presented high-pressure pump operates in the FSI petrol engine supply system, responsible for increasing fuel pressure from a low level (in-tank pump) to the values required by precise direct injectors. Its placement on the right side of the engine unit allows for proper cooperation with the timing system and the fuel rail, which is crucial for the smooth operation of all cylinders. Thanks to a design adapted to the specific requirements of the 4.2 FSI engine, the pump ensures:

• stable operating pressure across the full load range,
• correct fuel dosing at low and high RPM,
• consistent cooperation with the engine control electronics.

Compatibility and vehicle fitment

The pump has been designed for use in Audi models, including the A6 C6 and RS4 B7 versions with the 4.2 FSI petrol engine. Its placement on the right side of the vehicle eliminates installation issues and allows for maintaining the factory geometry of fuel lines and connections to the cylinder head. Proper fitment to the specific engine configuration reduces the risk of leaks and engine starting problems. As an element from the High Pressure Fuel Pumps category, the product works with an injection system designed specifically for petrol, which is important for both the durability and correct operation of the entire system.

Technical and operational characteristics

The pump operates in a system powered by petrol, which requires appropriate material resistance to pressure and the chemical properties of the fuel. The design intended for the FSI engine ensures precise control of the fuel dose, as well as rapid response to changes in engine load. Its placement on the right side of the engine unit facilitates service and diagnostics, especially when checking for leaks and the condition of connections. The used condition means that the component comes from dismantling but retains functionality that allows for further operation after proper installation and basic workshop verification. For many users, this is a cost-effective solution while maintaining the original technical specifications.

Practical application and benefits of installation

Using this pump to replace a worn or damaged component allows for restoring proper pressure in the fuel system, which can translate into:

• easier engine starting when cold and warm,
• stable idle speed,
• better throttle response across the full RPM range,
• reduction of fuel pressure-related errors in the engine control unit. For Audi A6 C6 and RS4 B7 users with the 4.2 FSI unit, installing an original high-pressure pump is often the most rational solution, allowing for the preservation of factory engine performance parameters without the need to adapt aftermarket replacements.

Technical support and additional materials

To better understand the role of the high-pressure pump in the entire supply system and to properly plan diagnostics, it is worth checking the guide describing the construction and maintenance of the fuel system – a detailed discussion can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration. If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as additional pumps, supply lines, or pressure control elements, check the available parts in the Audi High Pressure Fuel Pumps category.