Audi A4 8K A5 8T Automatic Gearbox Cooling Oil Pressure Lines V6 8K0317825AG

Audi A4 8K / A5 8T V6 Automatic Transmission Oil Cooler Hoses are specialized components of the automatic transmission oil cooling system, designed for V6 engine models. They are responsible for maintaining stable oil pressure between the gearbox and the cooler, supporting a safe operating temperature for the automatic transmission and reducing the risk of overheating. This solution is dedicated to specific Audi A4 and A5 versions, ensuring proper geometric and functional fit.

Specifications and technical data

• SKU: 8K0317825AG
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317825AG
• Substitutable numbers: 8K0317825AG, 8K0 317 825 AG
• Gearbox type: Automatic
• Part type: Vent
• Category: Automatic Transmission Parts

Purpose and Function in the Drivetrain

The described set of hoses is part of the Automatic Transmission Parts group, responsible for transporting working oil between the transmission and the heat exchanger. In an automatic transmission, stable oil temperature is crucial for the operation of clutches, hydraulic valves, and mechatronics. Therefore, sealed and properly routed pressure lines are essential for the durability of the entire system.

In Audi A4 B8 (8K) and Audi A5 (8T) vehicles with V6 engines, these hoses are adapted to the specific routing within the engine bay, which reduces stress, minimizes the risk of abrasion, and facilitates servicing. This allows the automatic transmission oil cooling system to operate under stable conditions, ensuring smooth gear changes even under heavy loads.

Construction and Fit for Automatic Transmissions

The oil cooler pressure hoses in this set are designed to work with automatic transmissions, taking into account the appropriate operating pressure and medium temperature. Their shape, length, and mounting points are adapted to the factory routing in the Audi A4 8K and A5 8T body, allowing for installation in existing brackets and clamps without the need for modifications.

Original Audi parts ensure correct connection diameters and compatibility with factory quick connectors and seals. This allows the hoses to work with the standard transmission oil cooler, and the hydraulic system to maintain the parameters specified by the vehicle manufacturer.

Benefits of Using Original Oil Cooler Hoses

Using dedicated pressure hoses in the automatic transmission oil cooling system offers a range of practical benefits:

• maintaining proper oil flow between the transmission and the cooler,
• reducing the risk of leaks caused by ill-fitting aftermarket parts,
• stable thermal operating conditions for the transmission during city and highway driving,
• reduced stress on internal transmission components due to maintained oil viscosity,
• easier diagnostics and servicing due to factory-standard hose routing.

In cases of symptoms such as transmission overheating, decreased gear shifting quality, or visible leaks around the oil cooler, checking the condition of the pressure hoses is one of the basic service steps. Replacing them with an original part from the same construction group helps restore the system's proper operating conditions.

Condition, Origin, and Application in Service Practice

This part is sourced from a dismantled Audi vehicle and is offered as a used part, allowing for economical repair while maintaining factory geometry and fit. For workshops specializing in automatic transmission service for Audi A4 8K and A5 8T, this solution enables the recreation of the original hose routing without the need for custom fabrication.

When planning drivetrain service work, it's important to remember that a functional oil circulation and cooling system are as crucial as the condition of the torque converter or mechatronics. Additional information on diagnosing components that work with the transmission can be found in the article Clutch and Dual-Mass Flywheel – Diagnostics and Part Selection for the Drivetrain, which discusses a practical approach to assessing wear and selecting components for the power transmission system.

Expanding Work on Audi Automatic Transmissions

If you are planning a comprehensive repair or upgrade of the automatic transmission area in your Audi and need other parts from the same group, such as oil lines, cooling components, or additional hydraulic parts, check the available parts in the Audi Automatic Transmission Parts category.

By using components from the same construction group, you can consistently renovate the entire system, reduce the risk of recurring faults, and ensure predictable transmission behavior in daily operation.