Audi A4 B8 Gearbox Oil Pressure Oil Cooling Line Hose Tube Pipe 8K0317818BM

Audi A4 B8 Gearbox Oil Pressure Oil Cooling Line Hose Tube Pipe is a component from the Oil coolers and lines group, designed for operation in the automatic transmission oil cooling system. It is responsible for the stable dissipation of heat from the transmission oil, which translates into safe operating temperatures and a longer service life for drivetrain components. This solution is intended for users who want to maintain factory operating parameters and avoid transmission overheating.

Specifications and technical data

• SKU: 8K0317818BM
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317818BM
• Substitutable numbers: 8K0317818BM, 8K0 317 818 BM, 8K0 317 818 CS, 8K0317818CS
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Function and role in the transmission oil cooling system

The transmission oil cooling line in the Audi A4 B8 operates in the circuit between the gearbox and the heat exchanger. Its tasks include:

• transporting transmission oil to the cooling element,
• maintaining system tightness under variable operating pressures,
• stabilizing oil temperature during city and highway driving.

Thanks to a properly functioning line, the drivetrain maintains predictable operating parameters, and gear shifts remain smooth even under higher thermal loads.

Why it is worth using an original oil cooling line

For components responsible for transmission oil cooling, it is crucial to maintain factory geometry and flow characteristics. The original line from the Oil coolers and lines group ensures:

• a precise routing relative to the body and other components,
• the correct internal diameter for proper oil flow,
• compatibility with factory connectors and mounts.

Such a solution reduces the risk of stress, leaks, and collisions with other elements in the engine bay, which is particularly important during long-term operation.

Product characteristics and service application

The transmission oil cooling line in the Audi A4 B8 is a wear item that may deteriorate over time due to operation at elevated temperatures and contact with external factors. Replacing it with a functional component allows you to:

• restore proper oil circulation in the transmission cooling system,
• minimize the risk of transmission oil leaks,
• maintain stable transmission operating conditions during intensive driving.

This solution is recommended for repairs related to transmission overheating, cooling system upgrades, or preventive replacement of parts showing visible signs of wear.

Condition of the item and benefits of choosing a used part

The offered line comes from the used parts segment, which allows for economical repair while maintaining factory design specifications. For many Audi users, this is a reasonable compromise between cost and maintaining the original operating characteristics of the system. Choosing this solution is particularly beneficial when servicing vehicles used on a daily basis, where both functionality and repair budget control are important.

Technical support and guide materials

During periods of high temperatures, it is especially important to maintain the efficiency of the entire cooling system, including oil circuits. You can find more about the impact of heat on the cooling system and how to reasonably use used cooling components in the article Summer heat vs. cooling system: used radiators and fans as a guarantee of savings.

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 return lines, supply sections, or additional branches, check the available parts in the Audi oil coolers and lines category.