Audi RS4 B8 Gearbox Transmission Oil Cooling Pipe Hose Line 8K0317818CQ

Audi RS4 B8 Gearbox Transmission Oil Cooling Pipe Hose Line is an original drivetrain component designed for operation in the front section of the vehicle. It ensures stable heat dissipation from the transmission oil, which supports safe transmission operating temperatures and reduces the risk of overheating during dynamic driving. This used OEM component is a sensible choice for servicing the oil cooling system in high-performance vehicles.

Specifications and technical data

• SKU: 8K0317818CQ
• Mark: Audi
• Condition: Used
• OEM Part Number: 8K0317818CQ
• Substitutable numbers: 8K0317818CQ, 8K0 317 818 CQ
• Location on the vehicle: Front
• Category: Oil Coolers & Lines

Function and role in the transmission oil cooling system

The Audi RS4 B8 Gearbox Transmission Oil Cooling Pipe Hose Line is responsible for transporting oil between the transmission and the oil cooler, operating in the front zone of the vehicle body. A properly functioning pipe:

• stabilizes transmission oil temperature under high-load conditions,
• limits the degradation of oil lubricating properties at high temperatures,
• supports the durability of internal transmission components,
• ensures predictable drivetrain behavior during intensive acceleration and engine braking.

For a vehicle with a sports character like the RS4 B8, a functional transmission oil cooling pipe is particularly important for consistent performance and the protection of drivetrain components.

Construction and fitment for Audi

The offered component comes from the Audi brand, which means compatibility with the factory pipe routing geometry and mounting points in the front of the vehicle. As a result:

• original oil flow paths and pipe routing relative to other components are maintained,
• the risk of interference with suspension, bodywork, or shield elements is minimized,
• installation is performed in a manner similar to the factory process, without the need for modifications.

Such fitment promotes the integrity of the entire oil cooling and piping system and facilitates future servicing.

Condition, application, and benefits of installation

The item is offered in used condition, which allows for an economical repair of the transmission oil cooling system while maintaining the manufacturer's original specifications. Replacing the pipe is particularly recommended when:

• leaks or traces of oil seepage are visible,
• mechanical damage has occurred in the front section of the vehicle,
• you are upgrading or refreshing the drivetrain system in a vehicle driven dynamically.

Selecting a pipe that complies with the factory design reduces the risk of oil pressure drops in the cooling circuit and helps maintain stable transmission operating conditions in the long term.

Integration with the oil cooling system and service knowledge

The Audi RS4 B8 Gearbox Transmission Oil Cooling Pipe Hose Line works in conjunction with other components of the oil cooling system, so when replacing it, it is worth checking the condition of the oil cooler, connectors, and mounts in the front section of the vehicle. For a better understanding of the impact of temperature on the durability of the powertrain and lubrication system, you can refer to our guide Engine cooling system – overheating, repair, and used radiators, which discusses the relationship between overheating and component lifespan.

Expanding service within the oil cooling system

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 hoses, oil coolers, or additional return lines, check out the available parts in the Audi oil coolers and hoses category.