Audi Q5 8R Gearbox Oil Pressure Return Feed Pipe Line Automatic 4H0317817M

Audi Q5 8R Gearbox Oil Pressure Return Feed Pipe Line Automatic is a component from the Oil coolers and lines category, designed for the automatic transmission system in petrol vehicles of this brand. It ensures stable routing of the operating oil between the gearbox and the cooling system, which translates into safe transmission operation and predictable drivetrain performance.

Specifications and technical data

• SKU: 4H0317817M
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0317817M
• Substitutable numbers: 4H0317817M, 4H0 317 817 M
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Purpose and function in the drivetrain

The automatic transmission oil line in the Audi Q5 8R is responsible for transporting the lubricating and cooling medium between the transmission and the oil cooling module. In a vehicle with an automatic transmission, stable oil pressure and flow are crucial for smooth gear shifting, protection of multi-plate clutches, and reduction of component overheating.

In cars with a petrol engine, the line operates under varying thermal load conditions, which is why its tightness and correct flow cross-section have a direct impact on the durability of the entire drivetrain system.

Benefits of using the original oil line

Using an oil line from the same design family as factory Audi components allows for maintaining proper flow parameters and fitment to the gearbox and oil cooler ports. As a result:

• proper oil circulation in the automatic transmission is maintained,
• the risk of local overheating and degradation of lubrication quality is reduced,
• the possibility of leaks at connections is limited,
• compatibility with the factory mounting system in the Audi Q5 8R is preserved.

This solution is particularly beneficial during transmission service when you want to maintain the factory operating characteristics of the gearbox and predictable vehicle behavior in daily use.

Application in the oil cooling system

As an element of the Oil coolers and lines category, this line works with the heat exchanger responsible for maintaining a stable transmission oil temperature. A correctly selected and tight line:

• supports efficient heat dissipation from the automatic transmission,
• helps keep the oil within the optimal operating temperature range,
• indirectly influences the transmission's refinement and response time to load changes.

Replacing the line is recommended upon any signs of corrosion, mechanical damage, or after detecting leaks within the gearbox oil cooling system.

Selection, installation, and operation

When selecting an oil line for an Audi Q5 8R with an automatic transmission and a petrol engine, it is worth paying attention to compatibility with the specific vehicle powertrain version and cooling system configuration. A correctly matched component facilitates installation, minimizes the need for modifications, and allows for maintaining the factory routing of oil lines.

During installation, it is recommended to:

• inspect the condition of the ports on the gearbox and oil cooler,
• replace seals at the connections,
• check the system for leaks after the transmission has warmed up for the first time.

Such an approach reduces the risk of recurring leaks and allows for longer, stable operation of the entire drivetrain.

Expanding oil cooling system service

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

When working with oil circulation and drivetrain operating temperatures, it is also worth paying attention to the general condition of the vehicle's cooling system. How high temperatures affect the condition of components and where to look for savings when choosing components is described in the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which will help you better plan your car's service.