Audi Q7 4M Quattro Automatic Gearbox Pressure Cooler Line Hose Set 4N0317801E

Audi Q7 4M Quattro Automatic Gearbox Pressure Cooler Line Hose Set is an original component from the Oil coolers and lines group, designed for the drivetrain system in quattro-equipped models. The set ensures stable transmission fluid flow in the automatic gearbox, supporting its proper lubrication and cooling during daily operation.

Specifications and technical data

• SKU: 4N0317801E
• Mark: Audi
• Condition: Used
• OEM Part Number: 4N0317801E
• Substitutable numbers: 4N0317801E, 4N0 317 801 E
• Gearbox type: Automatic
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and function in the drivetrain system

The presented hose set is a component of the oil transmission system in the Audi Q7 4M automatic gearbox with quattro drive. It is responsible for the safe delivery of the working medium between the gearbox and the oil cooling system components, which directly affects the stability of the transmission operating temperature and the smoothness of gear shifts.

Thanks to precise fitting to the specific drive configuration, the hoses maintain the correct routing geometry, minimizing the risk of vibrations, leaks, and improper oil flow. This is particularly important in vehicles with higher weight and torque, where the thermal loads on the gearbox are significantly higher.

Set construction and role in the Oil coolers and lines category

The set belongs to the Oil coolers and lines group, i.e., components responsible for transporting and dissipating heat from the oil operating in the drivetrain. In practice, this means that the hoses work with the gearbox oil cooler, creating a closed circuit in which the oil is directed to the heat exchanger, cooled, and then returned to the transmission.

Such a solution allows for maintaining stable oil viscosity parameters, which translates into:

• more predictable automatic gearbox operation,
• reduced wear of friction elements,
• limited risk of overheating when driving under load.

Compatibility with the automatic gearbox

The product is intended for vehicles equipped with an automatic gearbox, which is crucial when selecting spare parts. In this type of transmission, stable oil pressure and temperature are essential for the proper operation of the mechatronics, clutches, and gear shift control system.

Selecting hoses dedicated to the specific Audi Q7 4M Quattro configuration reduces the need for installation modifications and allows for maintaining the factory operating characteristics of the system. This is a particularly beneficial solution when servicing gearboxes after oil changes, oil cooler repairs, or fixing leaks in the circuit.

Characteristics of the used component

The offered set is a used part, sourced from dismantling, which allows for economical repair while maintaining the manufacturer's original specifications. In practice, this means factory-fit to mounting points, correct hose routing, and compliance with system operating parameters.

Choosing an original used component is often preferred over replacements with uncertain geometry, as it reduces the risk of installation problems and leaks in the gearbox oil system.

Technical support and knowledge expansion

If you want to better understand how the oil and fluid cooling system affects the durability of the powertrain and transmission, it is worth checking out our guide material. Practical information on symptoms of overheating, diagnostics, and the role of coolers can be found in the article Engine cooling system – overheating, repair, and used coolers, which discusses the relationships between an efficient fluid circuit and the service life of components.

If you are interested in a broader context of using original parts from dismantling in premium brand cars, including Audi, practical examples of upgrades and repairs can be found in the guide The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years. This is a good supplement to your knowledge when planning long-term vehicle maintenance.

Related Audi oil cooling system components

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