Audi R8 42 Gearbox Oil Pressure Return Feed Pipe Line Automatic 420317825A

Audi R8 42 Gearbox Oil Pressure Return Feed Pipe Line Automatic is an original automatic transmission system component, belonging to the Oil coolers and lines group. Designed specifically for the sports Audi R8 with a petrol engine, it ensures stable oil return from the automatic transmission and supports the proper operation of the entire lubrication system. This used OEM component is a sensible choice for professional gearbox repair or maintenance under demanding operating conditions.

Specifications and technical data

• SKU: 420317825A
• Mark: Audi
• Condition: Used
• OEM Part Number: 420317825A
• Substitutable numbers: 420317825A, 420 317 825 A
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Purpose and function in the transmission system

This oil pressure return pipe operates within the automatic transmission lubrication circuit, responsible for safely discharging oil from the transmission towards the cooler or reservoir. A properly functioning return line:

• stabilizes transmission oil temperature under high-load conditions,
• reduces the risk of automatic transmission overheating during dynamic driving,
• supports uniform lubrication of the internal gearbox components.

Thanks to its fitment for the petrol engine and automatic transmission in the Audi R8, the pipe works in conjunction with the factory oil cooling system, maintaining the parameters specified by the manufacturer.

Benefits of using an original pipe

Using an original oil pressure return pipe in an Audi R8 provides a number of practical service and operational benefits:

• Factory geometry and connections – facilitate installation in the existing system without the need for modifications.
• Compatibility with the automatic transmission system – the correct oil flow path and appropriate operating pressure are maintained.
• Consistency with the oil cooling system – the pipe works with the vehicle's factory oil coolers and other lines.
• Reasonable repair cost – the used OEM component allows for reduced service costs while maintaining proper operating parameters.

Application in the Audi R8 with a petrol engine

The pipe has been developed with the sports design of the Audi R8 with a petrol engine and automatic transmission in mind. In such units, it is particularly important to maintain a stable transmission oil temperature, because:

• thermal load on the gearbox increases during intensive driving,
• high oil temperature can accelerate the wear of internal components,
• an efficient oil return system supports smooth gear shifting.

Selecting a pipe dedicated to a specific drivetrain configuration reduces the risk of leaks, incorrect oil line routing, and installation problems.

Condition and installation aspects

The item comes from disassembly and is intended for reinstallation in a vehicle after prior verification of compatibility with the specific Audi R8 version. Before installation, it is recommended to:

• check the tightness of connections and connection surfaces,
• verify the condition of connectors and any mounting points,
• install in conjunction with the appropriate transmission oil recommended for the given gearbox.

Professional installation of the pipe in the Oil coolers and lines system helps maintain proper oil circulation and reduce the risk of automatic transmission failure.

If you are planning a comprehensive repair or upgrade of the lubrication and cooling system area of your automatic transmission in your Audi and need other components from the same group, such as oil lines, return lines, or feed pipes, check the available parts in the Audi oil coolers and lines category.

Technical support and knowledge about used parts

To better understand how the oil cooling system and related components behave at high temperatures, it is worth reading the guide on the impact of heat on the cooling system and the operation of used components – details can be found in the article "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings".

If you want to maximize the trouble-free operation time of used components in your car, practical tips on maintenance and operation can be found in the guide "How to extend the service life of used car parts?".