Audi A8 D4 Intercooler Air Pressure Pipe Upper Left N/S 4.2 TDI V8 057145957Q

Audi A8 D4 Intercooler Air Pressure Pipe Upper Left N/S 4.2 TDI V8 is an original intake system component designed for V8 diesel engines, ensuring stable airflow to the engine. Thanks to its precise fit for the engine bay layout on the left side, this component supports smooth engine operation and proper air circulation. It is a practical solution for users looking for a proven, factory-spec intake pipe for their Audi A8 D4 with a 4.2 TDI engine.

Specifications and technical data

• SKU: 057145957Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 057145957Q
• Substitutable numbers: 057145957Q, 057 145 957 Q
• Location on the vehicle: Left
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The presented intake air pipe operates in the upper part of the system on the left side, directing air to the V8 diesel engine in the Audi A8 D4. Its properly shaped cross-section and factory mounts allow for stable seating in the engine bay, without stress or leaks. A correctly selected intake pipe reduces pressure drops, supports efficient cylinder filling, and helps maintain the proper operating parameters of the diesel unit.

Construction and fitment for Audi A8 D4 4.2 TDI V8

The pipe belongs to the Pipes, hoses and tubes group, responsible for transporting air and operating fluids in the vehicle. The design was developed specifically for the geometry of the Audi A8 D4 engine bay with the 4.2 TDI V8 unit, which translates into:

• secure intake routing on the left, upper side of the engine,
• compatibility with factory brackets and clamps,
• preservation of the original airflow path.

As a result, installation is straightforward, without the need for modifications or non-factory solutions, and the entire intake system maintains the flow characteristics designed by the manufacturer.

Benefits of using an original intake pipe

Using an original air intake component in an Audi A8 D4 with a V8 diesel engine offers a number of practical operational benefits. The most important include:

• Factory fitment – maintaining the correct geometry of the intake system and compatibility with engine accessories.
• Stable operation of the diesel unit – reducing the risk of leaks that could affect combustion parameters and accessory performance.
• Consistency with other system components – the pipe works in harmony with other hoses and connectors, creating a uniform, predictable intake system.

For users who value technically correct, factory solutions, this is a sensible choice when repairing or restoring the original intake configuration in an Audi A8 D4.

Characteristics of the used part

The offered intake pipe is a used part, sourced from dismantling, which allows you to combine original quality with a more favorable purchase cost. Such components are frequently chosen for servicing intake systems in diesel vehicles, where both compliance with factory specifications and repair economy are important. In the case of items such as intake pipes and hoses, a used OEM component often represents a technically sound alternative to aftermarket replacements with uncertain fitment.

If you are considering whether it is better to refurbish or install a used original part, our guide article may be helpful: Refurbished or used original – which part to choose for repairs?, which discusses the practical differences between these approaches to repair.

Comprehensive Audi intake system support

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 additional pipes, hoses, or intake tubes, check out the available parts in the Audi pipes, hoses and tubes category.