Audi A4 B8 A5 8T 2.0 TDI Automatic Gearbox Oil Line Pipe 8K0317817EC 8K0317818EC

Audi A4 B8 A5 8T 2.0 TDI Automatic Gearbox Oil Line Pipe is a component from the Oil coolers and lines category, designed for the automatic transmission lubrication system in Audi models with a 2.0 TDI engine. It is responsible for the safe routing of transmission oil between the gearbox and the cooling system, which directly impacts the stable operation of the drivetrain and the durability of the components. This is a solution for users who want to maintain the factory operating characteristics of the automatic transmission and avoid issues with oil overheating.

Specifications and technical data

• SKU: 8K0317817EC-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317817EC
• Substitutable numbers: 8K0317817EC, 8K0 317 817 EC, 8K0317818EC, 8K0 317 818 EC
• Gearbox type: Automatic
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and function in the drivetrain

The automatic gearbox oil line pipe in the Audi A4 B8 and A5 8T with a 2.0 TDI engine operates in a demanding environment of high temperature and pressure. Its task is to maintain a stable flow of transmission oil between the automatic gearbox and the cooling components, which allows for the maintenance of proper oil viscosity and smooth gear shifting. A functional line minimizes the risk of pressure drops, leaks, and overheating, which can lead to costly gearbox failures.

Benefits of using the Audi oil line pipe

Using an oil line pipe dedicated to specific Audi models ensures:

• proper fitment to the automatic transmission system without the need for modifications,
• stable oil flow across the full range of operational loads,
• reduced risk of leaks at connections and mounts,
• maintenance of the correct operating temperature of the transmission oil. As a result, the automatic transmission retains its operating characteristics, and gear shifting remains predictable and repeatable. For workshops and users, this means a more controlled repair process and a lower risk of the fault recurring.

Installation and operational characteristics

The automatic gearbox oil line pipe designed for the Audi A4 B8 and A5 8T is engineered for specific routing within the engine bay and chassis. Properly selected shapes and mounting points facilitate installation and reduce stress during drivetrain operation. Correct routing of the line is important for:

• collision-free routing relative to other drivetrain components,
• resistance to vibrations and movements of the power unit,
• maintaining tightness over a long period of use. Selecting a line compatible with the automatic transmission design allows for avoiding problems typical of universal solutions, such as improper positioning or excessive stress on the connections.

Component condition and practical service application

The offered oil line pipe comes from dismantling and is intended for reinstallation in Audi vehicles equipped with an automatic transmission. Such components are often chosen by workshops specializing in automatic transmission service when it is necessary to replace a damaged or corroded line while maintaining the factory geometry of the system. In service practice, this allows for:

• restoring the original routing of oil lines,
• reducing installation time thanks to matched connectors,
• maintaining the operating parameters of the gearbox oil cooling system.

Technical support and part selection

When selecting an automatic gearbox oil line pipe for an Audi, it is worth paying attention to compatibility with the automatic transmission type and the 2.0 TDI engine configuration. Proper matching of the component to the specific vehicle version allows for avoiding installation problems and ensures correct cooperation with the existing oil cooling system. If you are planning a comprehensive repair or upgrade of the transmission lubrication and cooling area in your Audi and need other components from the same group, such as oil return lines, supply sections, or additional branches to the cooler, check the available parts in the Audi oil coolers and lines category. To better understand the impact of a functional cooling and lubrication system on the durability of the power unit and the gearbox, it is worth reading the guide on our blog: Engine cooling system – overheating, repair, and used radiators. For users considering the choice between a used component and a cheap replacement, the following article may also be helpful: Cheap car part replacements – hidden defects and costs that workshops rarely talk about, which discusses practical differences in operation.