Audi S4 B9 Q5 FY 3.0 TFSI Fuel Injectors Left N/S Injection Rail 06M133315L

The Audi S4 B9 Q5 FY 3.0 TFSI Fuel Rail Left is an original gasoline fuel system component designed for 3.0 TFSI engines in Audi S4 B9 and Q5 FY models. The rail ensures stable fuel distribution to the injectors, which translates to predictable engine operation and proper combustion parameters.

Specifications and technical data

• SKU: 06M133315L
• Mark: Audi
• Condition: Used
• OEM Part Number: 06M133315L
• Substitutable numbers: 06M133315L, 06M 133 315 L
• Location on the vehicle: Right
• Category: Fuel Injectors

Purpose and Function in the Fuel System

The fuel rail is responsible for the uniform delivery of fuel to the high-pressure injectors in the 3.0 TFSI engine. A correctly selected component in this area is crucial for:

• stable fuel pressure across the entire RPM range,
• precise mixture dosing by the injectors,
• maintaining engine smoothness under load and during dynamic driving.

The rail works with the factory equipment of the 3.0 TFSI unit, maintaining the parameters specified by the vehicle manufacturer.

Construction and Vehicle Placement

This component belongs to the category of injector nozzles, which are sub-assemblies directly related to the precise delivery of fuel to the combustion chamber. The rail's construction is adapted to the specific V6 TFSI engine architecture, ensuring:

• proper routing of fuel lines within the engine bay,
• correct positioning of injectors relative to the cylinder head,
• safe dissipation of pressure loads during engine operation.

Its placement on the right side of the vehicle (according to the assembly designation) means the rail is intended for a specific cylinder bank, which is important for part selection and repair planning.

Benefits of Using an Original Fuel Rail

Using a component sourced from a dismantled Audi vehicle allows for the preservation of the fuel system's original operating characteristics. In practice, this means:

• maintaining the parameters of the factory control for the 3.0 TFSI engine without the need for adapting non-standard solutions,
• consistency with the original fuel system geometry, facilitating installation and servicing,
• reducing the risk of leaks resulting from mismatched aftermarket parts.

This solution is particularly beneficial for repairs where compliance with the manufacturer's service documentation is essential.

Condition, Verification, and Service Application

The rail is a used part, removed from a vehicle, and intended for reinstallation in Audi S4 B9 and Q5 FY vehicles with the 3.0 TFSI engine. This type of component is often chosen for:

• repairs of the injection system after mechanical or collision damage,
• diagnosing fuel pressure issues when replacing the rail is necessary to rule out leaks,
• comprehensive regeneration of the fuel system, including injectors and associated components.

Selecting the correct rail for a specific engine configuration is crucial for the proper functioning of the entire injection system.

Technical Support, Knowledge, and Related Parts

When working with the injection system, it's beneficial to be aware of common signs of wear. Although the presented component is for a gasoline engine, many diagnostic principles are similar to those for diesel systems – especially regarding fuel pressure and sealing. More information on symptoms and the consequences of neglect in this area can be found in the article diesel injector faults – symptoms, consequences, and diagnostics, which organizes service knowledge.

If you are looking for other components in the Audi injector nozzles category for similar service applications, check the Audi injector nozzles available in our store to select a complete solution for your fuel system.