Audi A4 B8 A5 8T Gearbox Oil Cooler Pressure Line Hose Tube Pipe 8K0317826BC

Audi A4 B8 A5 8T Gearbox Oil Cooler Pressure Line Hose Tube Pipe is an original component from the Oil coolers and lines group, designed for the automatic transmission oil cooling system in Audi A4 B8 and Audi A5 8T models. The precisely selected geometry of the line ensures stable routing of the cooling medium and supports the safe operation of the gearbox under a wide range of loads.

Specifications and technical data

• SKU: 8K0317826BC
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317826BC
• Substitutable numbers: 8K0317826BC, 8K0 317 826 BC
• Part type: Oil Cooler Line
• Category: Engine Oil Coolers & Lines

Purpose and function in the drivetrain

The gearbox oil cooler line is responsible for transporting transmission oil between the gearbox and the heat exchanger. A correctly selected component in this area is crucial for:

• maintaining a stable transmission oil temperature,
• reducing the risk of gearbox overheating,
• maintaining smooth gear shifting,
• extending the service life of internal transmission components. Thanks to the factory fitment for the specific configuration of the Audi A4 B8 and A5 8T, the line maintains proper connection tightness and correct routing relative to other components in the engine bay.

Original origin and installation fitment

The product comes from the Audi line, which means maintaining factory manufacturing standards, connection diameters, and line shape. Original mounts and connection ends facilitate installation in the location intended by the vehicle manufacturer, without the need for system modifications or the use of additional adapters. Such fitment translates into:

• secure seating in brackets and guides,
• minimization of hose stress during drivetrain operation,
• maintenance of proper oil flow across the entire operating temperature range.

Characteristics of the used component

The line comes from the secondary market, which allows for reduced service costs while maintaining the manufacturer's original specifications. A used component of this type is a particularly attractive solution for maintenance repairs, where compliance with the factory design and predictable behavior in the oil cooling system are priorities. Choosing an original line from disassembly instead of a random replacement reduces the risk of fitment issues, leaks, or incorrect routing in the engine bay, which is important for both the durability of the gearbox and operational safety.

Technical support and knowledge about the cooling system

To better understand the impact of an efficient cooling circuit on the durability of the powertrain and transmission, it is worth checking out the guide material on the diagnostics and repair of cooling systems – this is discussed in detail in the article Engine cooling system – overheating, repair, and used radiators. Knowledge in this area helps to properly assess the condition of associated components, such as oil coolers or supply lines.

Service expansion within the oil cooling system

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

Summary of application in Audi A4 B8 and A5 8T

Audi A4 B8 A5 8T Gearbox Oil Cooler Pressure Line Hose Tube Pipe is a solution intended for users who expect factory fitment and predictable operation of the transmission oil cooling system. Its original origin, compatibility with the design of the A4 B8 and A5 8T models, and maintenance of flow parameters make it a practical choice for repairs and inspections of the drivetrain in these cars.