Audi A5 S5 8T Fuel Distribution Pipe Hose Line 4.2 V8 FSI CAUA Petrol 079127501N

The Audi A5 S5 8T Fuel Line Hose 4.2 V8 FSI CAUA Gasoline is an original fuel supply system component designed for V8 FSI gasoline engines in Audi A5 / S5 8T models. As part of the hoses, pipes, and tubes group, it is responsible for the safe and stable routing of fuel within the engine unit, which directly impacts engine performance and durability.

Specifications and technical data

• SKU: 079127501N
• Mark: Audi
• Condition: Used
• OEM Part Number: 079127501N
• Substitutable numbers: 079127501N, 079 127 501 N
• Fuel type: Petrol
• Part type: Line
• Category: Hoses, Lines & Pipes

Purpose and Function in the Fuel System

The presented fuel line has been specifically designed to work with the 4.2 V8 FSI gasoline engine, designated CAUA. It is responsible for the precise delivery of fuel within the engine unit, ensuring:

• stable pressure in the supply system,
• a leak-proof connection between fuel system components,
• resistance to typical thermal and mechanical loads encountered in the engine bay.

Thanks to its factory-fitted design for a specific engine and body, the hose maintains the correct routing geometry, reducing the risk of chafing and improper positioning during engine operation.

OEM Construction and Fit for Audi A5 / S5 8T

As an Audi product, the fuel line belongs to the OEM parts group, meaning it adheres to the vehicle manufacturer's original quality standards. In practice, this translates to:

• precise fit with factory brackets and mountings in the engine bay,
• compatibility with the stock V8 FSI engine fuel system,
• no need for modifications or shape adjustments during installation.

This solution is particularly beneficial for servicing high-performance engines, where proper routing of fuel lines is crucial for safety and engine stability.

Technical Characteristics and Application in Gasoline Engines

The hose belongs to the Hoses, Pipes, and Tubes category and is designed for gasoline engine fuel supply systems. Its construction is adapted for use with petrol fuel, meaning:

• material resistance to contact with gasoline and fuel additives,
• maintenance of flexibility and sealing within the typical engine operating temperature range,
• long-term operational capability without loss of essential performance characteristics.

This makes the hose suitable for both standard driving and conditions of higher engine load, typical for S5 versions.

Condition, Verification, and Benefits of Using a Used Part

This item is from the used parts group, allowing for economical repair of the fuel system while maintaining the original manufacturer's specifications. A correctly selected fuel line enables:

• restoration of proper fuel circulation in the V8 FSI engine,
• reduction of leak and pressure drop risks in the system,
• maintenance of the engine's factory performance characteristics.

This solution is particularly recommended for replacing damaged or worn hoses when preserving the original configuration of the Audi A5 / S5 8T fuel system is a priority.

Selecting a Fuel Line and Related Materials

When selecting a fuel line for the Audi A5 / S5 8T with a 4.2 V8 FSI engine, it is important to ensure compatibility with the specific engine version and fuel supply system. If necessary, catalog data and manufacturer markings can be helpful in confirming compatibility with a particular vehicle.

If you are looking for other Audi hoses, pipes, and tubes for your car, check out our dedicated category: Audi hoses, pipes, and tubes.

To better understand the design differences between sport versions and standard models, it is worth reading the comparative material: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?. This will help you better assess the importance of correctly selecting fuel system components for more powerful engines.