Audi A4 B7 Oil Pressure Line Hose Tube Transmission Cooler Automatic 8E0317825BA

Audi A4 B7 Oil Pressure Line Hose Tube Transmission Cooler Automatic is an original transmission oil cooling system component, designed for use with an automatic transmission. It ensures stable oil flow between the gearbox and the cooler, supporting safe operating temperatures for the transmission and smooth gear shifting performance.

Specifications and technical data

• SKU: 8E0317825BA
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0317825BA
• Substitutable numbers: 8E0317825BA, 8E0 317 825 BA
• Gearbox type: Automatic
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and function in the oil cooling system

The oil line in the Audi A4 B7 model is responsible for the controlled flow of the cooling medium between the automatic transmission and the oil cooler. A properly selected component in this group reduces the risk of transmission overheating, which translates into:

• stable automatic gear shifting across a wide range of loads,
• reduced thermal stress within the gearbox,
• more predictable vehicle behavior in city traffic and on the highway.

Thanks to its precise fit for the specific drivetrain configuration, the line works with the factory oil cooler, maintaining original routing geometry and mounting points.

Construction and fitment for automatic transmission

The component has been designed for use with the automatic transmission type, which means it features a properly selected flow diameter, shape, and connection ends. In practice, this results in:

• maintaining proper oil pressure and flow in the cooling circuit,
• minimizing pressure drops along the line,
• secure connection to the oil cooler and the transmission housing.

Its original origin from the Oil coolers and lines group helps maintain the factory operating characteristics of the system without the need for installation modifications.

Benefits of using an original oil line

Using an oil line dedicated to the Audi A4 B7 helps reduce typical problems associated with leaks or improper routing of aftermarket lines. In practice, the user gains:

• more predictable automatic transmission operating conditions at high ambient temperatures,
• reduced risk of oil leaks at critical connection points,
• better control over transmission oil temperature when driving under load.

This used component, sourced from disassembly, offers a reasonable compromise between cost and maintaining the original oil cooling system specifications.

Application in service practice

The automatic transmission oil cooler line is suitable both for the typical replacement of a damaged section and for broader service work involving the transmission oil cooling system. It can be used, among other things, for:

• eliminating leaks in the transmission oil circuit,
• repairs following front-end collisions,
• preventive replacement of rubber and metal oil line components.

Selecting a line compatible with the Audi A4 B7 design facilitates installation and allows for maintaining the original routing of oil lines in the engine bay.

Expanding the oil cooling system in an Audi

If you are planning a comprehensive repair or upgrade of the oil cooling area in your Audi and need other components from the same group, such as additional oil lines, return sections, or connecting elements, check out the available parts in the Audi oil coolers and lines category.

Technical support and operation in high temperatures

When operating an automatic transmission during summer heat, maintaining an efficient oil cooling system is crucial. The impact of high temperatures on the entire cooling system and practical operating tips can be found in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which will help you better plan service and the selection of cooling-related components.