Audi RS6 C7 Gearbox Cooler Oil Transmission Cooling Radiator 4H0317021H

Audi RS6 C7 Gearbox Cooler Oil Transmission Cooling Radiator is a specialized drivetrain component designed to work with the automatic transmission in Audi sports models. It is responsible for stabilizing transmission oil temperature, which translates into smooth gear shifting and reduced component wear. Using an OEM component of this class allows for a technically correct restoration of proper transmission operating conditions after a failure or upgrade.

Specifications and technical data

• SKU: 4H0317021H
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0317021H
• Substitutable numbers: 4H0317021H, 4H0 317 021 H
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Function and role of the transmission oil cooler

The transmission oil cooler in the Audi RS6 C7 is responsible for dissipating excess heat from the transmission oil in the automatic system. Maintaining a stable operating oil temperature:

• reduces the risk of transmission overheating,
• ensures consistent gear shifting characteristics,
• supports the durability of clutch plates, valves, and the mechatronics unit,
• allows for maintaining proper oil viscosity parameters across a wide range of loads.

For high-performance engines, such as those in the RS6 C7, an efficient transmission oil cooling system is crucial for reliability during dynamic driving and prolonged load.

Designed for automatic transmission

The presented cooler has been engineered to work with an automatic transmission, which means it is matched to the oil flow and pressure parameters characteristic of this type of gearbox. In practice, this translates into:

• stable system operation during frequent load changes,
• adequate thermal efficiency reserve at higher speeds,
• compatibility with the factory oil line system and mounting points.

Thanks to this, the cooler can be integrated into the existing system without the need for structural modifications, which is important both for repairs and for restoring the vehicle's factory configuration.

Benefits of using an original oil cooler

Choosing an original transmission oil cooler for an Audi allows you to maintain the manufacturer's factory engineering standards. The most important advantages include:

• Precise fit for the RS6 C7 drivetrain – compatibility with mounting geometry and oil line routing.
• Operating parameters adapted to the high power and torque of the engine.
• The ability to utilize the existing cooling system architecture without additional modifications.

For workshops specializing in the Audi brand and users expecting repeatable, predictable repair results, using such a component is a technically safe solution that complies with the manufacturer's specifications.

Condition, verification, and selection based on technical data

The offered cooler comes from the Oil coolers and lines group and is a used component, which allows for economical repair while maintaining the original design. Before installation, a standard workshop procedure is recommended: checking for leaks, ensuring oil channels are clean, and verifying mounting points when matching to a specific vehicle configuration.

It is worth basing the selection of parts on the vehicle's technical data and manufacturer markings, which minimizes the risk of ordering errors and speeds up the service process. In case of doubt, it is helpful to compare the geometry of the connectors, the type of connections, and the mounting layout with the currently installed component.

Technical support and related components

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

When working on engine and transmission operating temperatures, it is worth expanding your knowledge about the relationships between the engine cooling system and component durability. Practical tips on diagnosing overheating and the use of used coolers can be found in the article Engine cooling system – overheating, repair, and used coolers.