Audi R8 42 Engine Fuel Rail Pipe Unit Distributor Right O/S 079133316L

Audi R8 42 Engine Fuel Rail Pipe Unit Distributor Right O/S is an original fuel system component designed for the right side of the engine unit in the Audi R8 42 generation model. As part of the Fuel Injector Nozzles group, the rail is responsible for the stable distribution of fuel to the injectors, which translates into smooth engine operation and predictable power characteristics. This used OEM component is a sensible choice for workshops and users who expect factory-fit quality without compromising on construction.

Specifications and technical data

• SKU: 079133316BA
• Mark: Audi
• Condition: Used
• OEM Part Number: 079133316BA
• Substitutable numbers: 079133316BA, 079 133 316 BA, 079133316L, 079 133 316 L
• Location on the vehicle: Right
• Part type: Fuel Injector
• Category: Fuel Injectors

Function and role of the fuel rail in the Audi R8

The fuel rail on the right side of the Audi R8 engine plays a key role in the precise fueling of the cylinders. It is responsible for:

• maintaining proper fuel distribution to the injectors in the given cylinder bank,
• stabilizing pressure within the fuel supply system,
• ensuring repeatable operating conditions for the engine control unit. Thanks to its factory geometry and correct positioning on the vehicle on the right side, the rail works in harmony with the original injectors and engine accessories, which helps maintain the engine's stock performance parameters.

Benefits of using an original fuel rail

Using an original fuel rail in the Audi R8 brings tangible operational and service benefits. The most important include:

• Factory fit – maintaining the correct position of ports, mounting points, and connections, which facilitates installation and eliminates the need for modifications.
• Consistency with the injection system – the rail is designed as an integral part of the system, allowing it to work with injectors, fuel lines, and controls without additional adaptations.
• Predictable engine behavior – uniform cylinder fueling promotes stable engine operation, which is particularly important in a sports car like the Audi R8. Choosing a used OEM component allows you to maintain high manufacturing quality while optimizing the costs of repairing or upgrading the fuel system.

Purpose and installation on the right side of the engine

The described fuel rail is intended for installation on the right side of the engine, in accordance with the original Audi design. This positioning ensures:

• correct routing of fuel lines in the engine bay,
• collision-free proximity to other components,
• easier service access during injector replacement or diagnostic work. For workshops, this means faster installation and a lower risk of errors resulting from improper component fitment. Correct positioning on the vehicle has a direct impact on the safety and reliability of the entire fuel system.

Used condition and repair cost-effectiveness

The fuel rail offered in used condition is an attractive solution for Audi R8 owners and service centers specializing in the brand. Compared to cheap replacements, the original component retains its factory construction and operating parameters, which limits the risk of fitment issues and leaks. If you are considering whether a budget replacement or a used OEM component is a better choice, it is worth reading the analysis of costs and potential risks described in the article cheap car part replacements vs. used OEM components. This will allow you to make a more informed service decision.

Injection system diagnostics and technical knowledge

The fuel rail works directly with the injectors, so any irregularities in the fuel system operation may originate from the injectors themselves or the associated components. For a more complete assessment of the system's technical condition, it is worth reading the material describing the symptoms and consequences of diesel injector failures – you can find them in the article diesel injector failures – symptoms, consequences, and diagnostics. Although the Audi R8 is not a typical diesel-powered car, the principles of evaluating injection performance and diagnostic approaches remain similar. If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as fuel rails, supply components, or parts working with injectors, check the available parts in the Audi Fuel Injector Nozzles category.