The Audi S4 B9 Q5 FY 3.0 TFSI right fuel rail is an original component of the gasoline fuel system, designed for 3.0 TFSI engines in Audi S4 B9 and Audi Q5 FY models. The right fuel rail is responsible for stable fuel distribution to the injectors, which directly impacts engine smoothness, performance, and operational safety.
Specifications and technical data
- SKU: 06M133316L
- Mark: Audi
- Condition: Used
- OEM Part Number: 06M133316L
- Substitutable numbers: 06M133316L, 06M 133 316 L
- Location on the vehicle: Right
- Category: Fuel Injectors
Application and Function in the Fuel System
The right fuel rail operates within the high-pressure injection system of the 3.0 TFSI engine, ensuring uniform fuel supply to the cylinders on one side of the unit. A correctly selected fuel rail is crucial for:
- stable fuel pressure across the entire engine load range,
- precise mixture dosing by the injectors,
- maintaining nominal performance and throttle response in the 3.0 TFSI engine.
Its original Audi origin ensures full compatibility with the engine's factory operating characteristics and proper integration with engine ancillaries.
Construction and Vehicle Fitment
This fuel rail belongs to the category of injector nozzles, working directly with the gasoline injectors installed in the engine cylinder head. The component is designed for installation on the right side of the engine, in accordance with the factory layout of ancillaries in Audi S4 B9 and Audi Q5 FY models with the 3.0 TFSI engine.
Key installation features:
- factory connector geometry enabling correct connection of fuel lines,
- dedicated mounting points to the engine head, ensuring stable seating of the rail,
- compatibility with original injectors used in 3.0 TFSI units.
This allows the fuel rail to be installed in place of a worn or damaged component without the need for fuel system modifications.
Benefits of Using an Original Fuel Rail
Using an original fuel rail in the 3.0 TFSI fuel system allows for engine operating parameters to be maintained in line with the manufacturer's specifications. The most significant advantages include:
- maintaining factory injection characteristics and stable engine operation across the full RPM range,
- reducing the risk of fuel system leaks due to proper component fitment,
- better cooperation with the engine control unit, which is calibrated for original components,
- maintaining predictable vehicle behavior during dynamic driving and under load.
For Audi S4 B9 and Q5 FY owners, this translates to more reliable operation, a reduced risk of starting issues, hesitation, or power loss resulting from unstable fuel supply.
Component Condition and Service Application
The fuel rail is offered as a used original part, allowing for economical repair of the fuel system while maintaining a component that is compliant with Audi's factory specifications. This is a practical solution in situations where:
- the existing fuel rail has suffered mechanical damage or corrosion,
- there are fuel pressure issues on one side of the engine,
- the component needs replacement as part of a comprehensive injector system service.
Prior to installation, standard leak testing and inspection of the connection ports are recommended, in accordance with service procedures for Audi vehicles.
Related Products and Technical Knowledge
If you are looking for other Audi injector nozzles for your car, please check our dedicated category: Audi injector nozzles. There you will find a wide selection of fuel system components tailored to various models of this brand.
When diagnosing the fuel system, it is helpful to be aware of the typical symptoms of wear in injection components. An article describing the symptoms and consequences of neglecting this area may be useful: diesel injector faults – symptoms, consequences, and diagnostics. Although it concerns diesel engines, many diagnostic and service principles remain similar for modern gasoline injection systems.
