Oil Pipe Audi A4 B8 A5 8T 2.0 TDI Automatic Gearbox Cooler Line 8K0317825AC

Oil Pipe Audi A4 B8 A5 8T 2.0 TDI Automatic Gearbox Cooler Line is an original transmission oil cooling system component designed for use with the automatic gearbox in Audi A4 B8 and Audi A5 8T models with the 2.0 TDI engine. It ensures stable heat dissipation from the transmission oil, which translates into predictable gearbox operation and reduces the risk of overheating during daily use.

Specifications and technical data

• SKU: 8K0317825AC
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317825AC
• Substitutable numbers: 8K0317825AC, 8K0 317 825 AC
• Gearbox type: Automatic

Function and role of the automatic gearbox oil cooler line

The oil cooler line in an automatic transmission is responsible for transporting transmission oil between the gearbox and the cooler. Maintaining the correct oil temperature is crucial for:

• stable operation of the automatic transmission under load,
• reducing wear on internal gearbox components,
• maintaining proper lubrication parameters and oil pressure,
• limiting the risk of failure resulting from overheating.

A properly selected line, dedicated to a specific engine version and gearbox type, allows for maintaining factory flow and cooling parameters.

Dedicated application for Audi A4 B8 and Audi A5 8T 2.0 TDI

The presented component has been designed for the drivetrain of the Audi A4 B8 and Audi A5 8T with the 2.0 TDI unit and automatic transmission. This means:

• geometry adapted to the factory routing of lines in the engine bay,
• maintaining appropriate connection diameters and oil flow cross-sections,
• compatibility with the original oil cooler and the automatic gearbox housing.

Thanks to this, installation proceeds in a manner similar to the factory assembly, without the need for modifications or the use of adapters.

Benefits of using an original Audi line

Choosing an original oil cooler line for an Audi automatic transmission brings a number of practical advantages:

• Factory fitment – maintaining the original routing of the line minimizes the risk of chafing, vibrations, and leaks.
• Parameters consistent with the manufacturer's design – appropriate resistance to the temperature and pressure of the transmission oil.
• Consistency with other drivetrain components – the line works with factory mounts, brackets, and the oil cooler.

This solution is particularly recommended for automatic gearbox repairs, where maintaining stable transmission oil operating conditions is essential.

Characteristics of the used component

The offered line comes from dismantling and is a used part, which allows for reducing service costs while maintaining the original manufacturer's specification. This type of component, when used correctly, retains its functional properties for a long time, which is why it is a reasonable choice for repairs and upgrades of the automatic gearbox oil cooling system.

If you want to better understand how to safely choose second-hand parts and what to pay attention to when purchasing, check out the guide on how to consciously buy used parts in an automotive store.

Application in service and drivetrain modernization

Replacing the oil cooler line is recommended, among other things, in the event of:

• detected leaks or corrosion of the existing line,
• repairs or replacement of the automatic transmission,
• modernization of the oil cooling system after a thermal failure.

Selecting the right line for a specific drivetrain configuration has a direct impact on the durability of the automatic gearbox and the comfort of gear shifting. In the case of extensive projects related to improving performance or changing drivetrain characteristics, it is also worth checking out material on sports components, such as the discussion of the differences between BMW M and M Performance components and standard parts, which shows how the design of elements affects the operation of the entire system.