Audi S8 D3 Petrol Fuel Injector Tube Rail Pipe Left N/S 07L133315A

Audi S8 D3 left fuel rail is an original gasoline fuel system component designed to work with injectors in this model's engine. It ensures stable fuel distribution to the cylinders on the left side of the engine, which translates to smooth engine operation and predictable performance.

Specifications and technical data

• SKU: 07L133315A
• Mark: Audi
• Condition: Used
• OEM Part Number: 07L133315A
• Substitutable numbers: 07L133315A, 07L 133 315 A
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Fuel Injectors

Purpose and Function of the Fuel Rail

The Audi S8 D3 left fuel rail operates within the gasoline engine's fuel system, responsible for evenly supplying fuel to the injectors on one side of the engine. A correctly selected fuel rail helps maintain:

• stable fuel pressure within the injectors,
• precise mixture dosing by the engine control unit,
• smooth engine operation across the entire RPM range.

This component is crucial for the correct operation of the injection system, especially in the powerful units used in the Audi S8 D3, where reliable fuel supply is required for dynamic driving.

Technical Specifications and Compatibility

The fuel rail belongs to the injector nozzles category, working directly with gasoline injectors. Its design is adapted for installation on the left side of the engine, which facilitates proper routing of fuel lines and maintaining the original equipment layout.

Original Audi OE origin means that the geometry, mounting points, and connection diameters are compliant with factory specifications, promoting hassle-free installation and proper system sealing.

Component Condition and Service Application

The offered fuel rail is a used part, sourced from disassembly. This is a practical service solution in situations where:

• the existing fuel rail has suffered mechanical damage or corrosion,
• there are leaks in the injector fuel supply,
• the component needs replacement as part of a fuel system repair.

Using an original fuel rail from disassembly allows for maintaining the factory fit and operating characteristics of the injection system, while also reducing repair costs compared to new parts.

Benefits of Using an Original Fuel Rail

Choosing a fuel rail dedicated to the Audi S8 D3 offers a range of practical benefits:

• Full mounting compatibility – factory mounting points and fuel connections.
• Stable fuel system operation – proper fuel distribution to the injectors on the left side of the engine.
• Reduced risk of leaks – fitted sockets and correct fuel rail geometry.
• Reasonable repair cost – a used OEM part as an alternative to new components.

Related Audi Injector Nozzles

If you are planning to replace other fuel system components during servicing, it is worth considering selecting other Audi injector nozzles from the same model group. Check available Audi injector nozzles to complete the set of fuel system components with a consistent specification.

Injection System Diagnostics and Service Knowledge

Although the presented fuel rail is intended for a gasoline engine, many principles of diagnostics and symptoms of incorrect injector operation are similar to those in diesel systems. To better understand the role of injection in engine operation and the potential consequences of neglect, it is worth reading the guide: diesel injector faults – symptoms, consequences, and diagnostics. This will help you better assess the condition of the entire fuel system and plan a comprehensive repair.