Audi A4 B8 A5 8T Oil Pressure Hose Tube Pipe Line Gearbox Cooler 8K0317825AN

Audi A4 B8 A5 8T Oil Pressure Hose Tube Pipe Line Gearbox Cooler is an original component from the Oil coolers and hoses group, designed for the gearbox oil cooling system in Audi A4 B8 and A5 8T models. It ensures stable oil flow under pressure between the cooler and the gearbox, which translates into safe transmission operating temperatures and predictable drivetrain performance. This is a solution for users looking for a proven, factory-spec component instead of universal replacements.

Specifications and technical data

• SKU: 8K0317825AN
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317825AN
• Substitutable numbers: 8K0317825AN, 8K0 317 825 AN, 8T2 820 356, 8T2820356
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and function in the gearbox oil cooling system

The oil pressure hose is responsible for transporting the lubricating and cooling medium between the gearbox and the oil cooler. A correctly selected component in this area:

• maintains the required operating pressure in the gearbox oil circuit,
• reduces the risk of transmission overheating during city and highway driving,
• minimizes the possibility of oil leaks at connections and critical points of the installation. Thanks to a design tailored to the specific Audi A4 B8 / A5 8T platform, the hose maintains the correct routing geometry, which facilitates installation and reduces mechanical stress on the connections.

Benefits of using an original Audi hose

Using a hose from the Oil coolers and hoses group dedicated to Audi allows you to maintain the factory characteristics of the drivetrain. Key advantages include:

• precise fit to the mounts and ports on the gearbox and oil cooler,
• preservation of the factory oil flow diameter, which supports stable transmission operation,
• compatibility with original seals and quick-connect fittings used by the manufacturer. In practice, this means fewer modifications during installation, predictable system behavior, and easier diagnostics of potential faults in the future.

Characteristics of the used component

The offered hose is a used part, which allows for lower repair costs while maintaining the manufacturer's original specifications. This type of part is particularly attractive for:

• repairs following local oil leaks in the area of the gearbox cooler,
• mechanical damage to the hose (abrasions, kinks, cracks),
• servicing the oil cooling system when it is necessary to replace several components simultaneously. Choosing a used hose of factory origin is often a beneficial compromise between cost and maintaining the operating parameters of the drivetrain.

Selection, part numbers, and practical service application

When selecting a gearbox oil cooler pressure hose, it is crucial to compare the manufacturer's markings and connection configurations with the part installed in the vehicle. This model has an assigned OEM part number and interchangeable numbers, which facilitates compatibility verification in service catalogs and parts selection systems. This allows the mechanic to quickly confirm whether the hose will be suitable for a specific version of the Audi A4 B8 or A5 8T. If you are planning a comprehensive repair or upgrade of the lubrication and gearbox cooling system area in your Audi and need other elements from the same group, such as additional oil hoses, oil coolers, or connection fittings, check the available parts in the Audi oil coolers and hoses category.

Operational safety and technical support

A functional oil pressure hose has a direct impact on the durability of the gearbox and the operational safety of the vehicle – leaks in this area can lead to a drop in oil level, overheating, and accelerated wear of the transmission. It is therefore worth treating oil leaks in the area of the gearbox cooler as a signal for quick diagnostics and replacement of damaged components. For users considering the use of used components in oil and drivetrain system repairs, a guide describing when such a solution makes sense and how to assess the scope of work will be useful – you can find detailed tips in the article Operational faults vs. costs: how to repair a car using used auto parts?. If you want to organize a gearbox and oil cooling system service with parts delivered directly to the workshop, you will find practical tips on ordering components online, including oil hoses, in the material Repairing your car without leaving home: how to order used parts online straight to the workshop?.