Audi A7 4G Turbocharger Lubrication Inlet Oil Feed Line Pipe 3.0 TDI 059145736G

Audi A7 4G Turbocharger Lubrication Inlet Oil Feed Line Pipe 3.0 TDI is an original lubrication system component designed for the precise drainage of oil from the turbocharger in the 3.0 TDI unit. Thanks to its factory-fit design for the Audi A7 4G, it ensures stable turbine operation and helps maintain proper oil pressure and temperature parameters. This is a practical solution for users who want to restore the correct operation of the turbocharging system using an original part from the Oil coolers and lines group.

Specifications and technical data

• SKU: 059145736G
• Mark: Audi
• Condition: Used
• OEM Part Number: 059145736G
• Substitutable numbers: 059145736G, 059 145 736 G
• Category: Engine Oil Coolers & Lines

Function and role of the oil return line

The oil return line in the 3.0 TDI engine is responsible for the safe drainage of heated oil from the turbocharger housing to the engine lubrication system. A properly selected component:

• stabilizes oil flow within the turbine,
• reduces the risk of oil overheating in the hot zone,
• supports even lubrication of the turbocharger bearings,
• decreases the probability of leaks around the connections with the turbine and engine block.

As a result, the turbocharging system in the Audi A7 4G can operate under stable conditions, which translates into the performance and durability of the 3.0 TDI unit.

Why choose an original Audi line

The original turbocharger oil return line designed for the Audi A7 4G stands out due to its perfect fit for the factory lubrication system and engine bay geometry. In practice, this means:

• properly selected length and shape, facilitating stress-free installation,
• adaptation to the temperatures and pressures typical for the 3.0 TDI engine,
• compatibility with original mounting points and seals.

Choosing such a component reduces the risk of assembly issues and leaks that may occur when using replacements with a different profile or build quality. This is particularly important in the area where the turbocharger operates and where thermal loads are high.

Part condition and service application

The line belongs to the Oil coolers and lines group, which are components responsible for the proper circulation and temperature control of engine oil. This type of component is often replaced during:

• turbocharger repairs or remanufacturing,
• removal of oil leaks in the turbine area,
• preventive maintenance of the lubrication system at higher mileages.

Using an original line in an Audi A7 4G with a 3.0 TDI engine allows for restoring factory oil flow parameters and limiting the risk of secondary failures related to improper oil drainage from the turbine.

Operational and diagnostic tips

When working with the lubrication system and turbocharger components, it is worth paying attention to:

• the condition of sealing surfaces at the line connection points,
• the cleanliness of oil channels before installation,
• any signs of overheating or deformation on the old line, which may indicate other problems in the system.

For a better understanding of the impact of oil circulation and temperature on engine durability, the article describing the relationship between the cooling system and engine lifespan may be helpful – check the material: Engine cooling system – overheating, repair and used radiators.

Service expansion within the Audi oil system

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

Summary

Audi A7 4G Turbocharger Lubrication Inlet Oil Feed Line Pipe 3.0 TDI is a practical choice for users who want to restore proper turbocharger operating conditions using an original manufacturer solution. Precise fitment to the lubrication system, compatibility with the 3.0 TDI engine design, and its classification in the specialized Oil coolers and lines group make this component well-suited for both routine repairs and more extensive service work on the Audi A7 4G.