Audi A4 B8 2.0 TFSI Petrol Fuel System Injection Rail 06J133317AB

The Audi A4 B8 2.0 TFSI Petrol Fuel Rail is an original fuel system component designed for TFSI petrol engines in the Audi A4 B8 generation. It ensures stable fuel distribution to the injectors, which translates to predictable engine operation and proper response to load.

Specifications and technical data

• SKU: 06J133317AB
• Mark: Audi
• Condition: Used
• OEM Part Number: 06J133317AB
• Substitutable numbers: 06J133317AB, 06J 133 317 AB, 1019139S03, 1 019 139 S03
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Role in the Fuel System

The fuel rail for Audi A4 B8 2.0 TFSI operates within the petrol system, responsible for evenly supplying fuel to the injectors at the correct pressure. A properly selected fuel rail is crucial for:

• stable engine operation across the full RPM range,
• precise fuel metering by the injectors,
• maintaining the correct fuel-air mixture in the petrol engine.

This component works in conjunction with the injection system, sensors, and engine control unit, influencing the engine's smoothness, fuel consumption, and emissions.

Design and Fitment for Audi

The fuel rail is designed as part of the injection system within the injector nozzles category, intended for full integration with Audi engine components. The appropriate placement of ports and mounting points allows for:

• secure seating on the cylinder head without the need for modifications,
• proper routing of fuel lines within the engine bay,
• maintaining the original geometry of the petrol fuel system.

This ensures the fuel rail works with factory injectors and components, simplifying installation and subsequent diagnostics.

Operating Characteristics in TFSI Petrol Engines

In TFSI units, the fuel rail is responsible for buffering and distributing high-pressure petrol. A properly functioning component helps in:

• maintaining stable fuel pressure under varying engine loads,
• limiting power drops resulting from insufficient fuel supply,
• reducing rough idling caused by disruptions in fuel flow.

This is particularly important in turbocharged engines, where injection precision directly impacts performance and engine safety.

Condition, Application, and Benefits of Installation

The offered fuel rail is a used part, sourced from dismantling, allowing for an economical repair of the fuel system while maintaining the original manufacturer's specifications. This is a good solution in situations where:

• the existing fuel rail is mechanically damaged (e.g., after a collision or improper dismantling),
• there are problems with engine starting or operation related to the fuel system,
• the component needs to be replaced with an original equivalent without investing in a new part.

Choosing an original fuel rail from dismantling allows for maintaining the original injection system operating parameters while reducing service costs.

Technical Support and Additional Materials

If you are looking for other components in the Audi injector nozzles category, check out the Audi injector nozzles available in our store to select complete fuel system components for your model.

For a better understanding of injection systems in diesel engines, you can read an article describing the symptoms and consequences of failures – you can find it here: diesel injector faults – how to recognize them and what are the consequences of neglecting them. Although it concerns diesel units, it helps to understand the importance of a functional injection system in any engine type.

If you are considering whether a reconditioned or used part would be a better choice, it's worth checking out the guide: reconditioned or used original – which part to choose for repair?, which discusses the practical differences between these solutions in the context of real repairs.