Audi S5 8T Petrol Fuel Injectors Injection Rail Line Pipe Left N/S 079133315BC

The Audi S5 8T fuel rail with injectors left set is an original gasoline fuel system component set, designed for installation on the left side of the engine. The complete configuration of the rail with injectors facilitates servicing and allows for efficient replacement of the assembly in Audi gasoline engine vehicles.

Specifications and technical data

• SKU: 079133315BC
• Mark: Audi
• Condition: Used
• OEM Part Number: 079133315BC
• Substitutable numbers: 079133315BC, 079 133 315 BC
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Fuel Injectors

Technical Characteristics and Purpose

The presented fuel rail with injectors has been specifically designed for Audi S5 8T generation models, in a configuration intended for the left side of the vehicle. The component works with the gasoline engine fuel system, ensuring proper fuel distribution to individual cylinders and stable operating conditions for the injectors.

The complete assembly of the rail with integrated injectors reduces the risk of mismatch between individual components and helps maintain consistent operating parameters for the entire injection system. This solution is particularly beneficial when replacing components in higher-power engines, where fuel metering precision is crucial for the unit's performance and smooth operation.

Set Construction and Function in the Injection System

The fuel rail acts as a fuel distributor, maintaining the correct pressure and supplying it to the injectors mounted within it. In this set, the injectors are already integrated with the rail, which:

• simplifies installation – no need to mount each injector separately,
• ensures consistent positioning relative to the intake ports and cylinder head,
• minimizes the risk of leaks at the connections between the rail and the injectors.

The placement on the left side of the engine is important for routing fuel lines, electrical harnesses, and compatibility with engine accessories. Correct side selection avoids collisions with other components and guarantees proper fitment in the engine bay.

Application in Audi Gasoline Engines

The complete fuel rail with injectors for gasoline engines is designed to operate in fuel supply systems with high demands for pressure stability and metering precision. In Audi S5 8T class vehicles, this directly impacts:

• maintaining predictable engine behavior across the full load range,
• correct formation of the fuel-air mixture at various engine speeds,
• reducing power loss resulting from uneven cylinder fueling.

A properly selected rail with injectors also helps maintain stable exhaust emission parameters, which is important for periodic technical inspections and fuel system diagnostics.

Condition, Selection, and Service Aspects

The offered set comes from the group of used Audi components, allowing for economical repair while maintaining the characteristics of the original injection system. When replacing fuel supply components, it is recommended to:

• select parts according to the intended mounting side on the vehicle,
• verify compatibility with the specific engine version of the S5 8T model,
• have the installation performed by an experienced service center, following procedures for bleeding and leak testing the fuel system.

During installation, pay attention to the condition of seals, correct connection of fuel lines, and electrical harnesses controlling the injectors, to avoid problems with starting, rough engine running, or error codes stored in the ECU.

Related Products and Technical Knowledge

If you need other components from the Audi injector nozzles category, check our offer, where you will also find Audi injector nozzles compatible with various models and engine versions of this brand.

When working with the injection system, it is useful to know the typical symptoms of wear and failure. Although the presented component is for a gasoline engine, many diagnostic principles are similar to diesel units – you can read about the symptoms and consequences of neglect in the article diesel injector failures – how to recognize them and what their neglect threatens, which helps to better understand the importance of functional injectors for the entire engine's operation.