Audi S4 B6 4.2 V6 Quattro Fuel Injectors Injection Rail Line Pipe 079133681G

The Audi S4 B6 4.2 V6 Quattro fuel rail with injectors is an original gasoline fuel system component designed for spark-ignition engines paired with an automatic transmission. This solution is engineered for stable engine supply, precise fuel metering, and maintaining optimal engine operating parameters under demanding conditions.

Specifications and technical data

• SKU: 079133681G
• Mark: Audi
• Condition: Used
• OEM Part Number: 079133681G
• Substitutable numbers: 079133681G, 079 133 681 G, 0280160575, 0 280 160 575
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Fuel Injectors

Technical Specifications of the Audi S4 B6 4.2 V6 Quattro Fuel Rail

The fuel rail with injectors operates within the gasoline fuel system, ensuring uniform fuel distribution to all cylinders of the V6 engine. Its design is intended for use with an automatic transmission, meaning it is adapted to the specific loads and operating characteristics of the powertrain in such a configuration.

This component belongs to the injector nozzles category, responsible for shaping the fuel spray, proper atomization, and maintaining stable pressure within the rail. This enables the maintenance of a correct air-fuel mixture, which translates to engine running smoothness, throttle response, and predictable vehicle behavior across the entire RPM range.

Purpose and Application in the Fuel System

The presented fuel rail is dedicated to the Audi S4 B6 4.2 V6 Quattro gasoline engine, where it is responsible for:

• stable cylinder fuel supply under varying loads and engine speeds,
• precise gasoline metering through integrated injectors,
• maintaining proper injector system operation during dynamic driving and when paired with an automatic transmission.

A correctly selected fuel rail with injectors is crucial for preserving power, flexibility, and smooth acceleration, as well as for minimizing issues such as rough idling or performance drops.

Benefits of Using an Original Fuel Rail

Choosing an original Audi fuel rail with a set of injectors is a solution that allows for the preservation of factory engine parameters and vehicle electronics compatibility. The key benefits include:

• factory fit for the 4.2 V6 Quattro engine – no modifications required, compatibility with stock equipment,
• maintenance of the injection characteristics as designed by the manufacturer, facilitating diagnostics and tuning,
• compatibility with the automatic transmission control system, which requires predictable powertrain behavior.

A fuel system component configured in this way helps reduce the risk of starting problems, hesitation during acceleration, or excessive fuel consumption resulting from improper fuel atomization.

Condition, Verification, and Installation Aspects

The fuel rail with injectors is offered as a used part, allowing for economical repair or replacement in specialized workshops. Before installation, the standard service procedure is recommended: leak testing, injector performance verification on a test bench, and checking injection parameters in the vehicle after installation.

Professional installation combined with computer diagnostics of the fuel injection system and engine control unit enables rapid detection of any deviations from reference values, which is particularly important for powerful gasoline engines paired with automatic transmissions.

Technical Support and Additional Materials

If you are looking for other components in the Audi injector nozzles category, please visit the dedicated subpage: Audi injector nozzles. This will allow you to easily compare available solutions within the same group of fuel system components.

To deepen your knowledge about common fuel injection system problems, it is worth reviewing the guide on diagnostics and fault symptoms – you can find it here: diesel injector faults – symptoms, consequences, and diagnostics. Although this description pertains to diesel engines, many control procedures and principles for assessing injector condition remain similar and can be helpful when working with gasoline systems as well.