Audi A4 B9 Q5 FY A6 C8 Turbo Oil Return Pipe 2.0 TDI DTNB 05L145736C

The Audi A4 B9 Q5 FY A6 C8 Turbo Oil Hose Pipe 2.0 TDI DTNB is an original turbocharger lubrication system component designed for Audi diesel engines. It ensures a stable oil supply to the turbine, ensuring safe engine operation and reducing the risk of costly breakdowns.

Specifications and technical data

• SKU: 05L145736C
• Mark: Audi
• Condition: Used
• OEM Part Number: 05L145736C
• Substitutable numbers: 05L145736C, 05L 145 736 C
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and function of the turbo oil line

The turbocharger oil line is responsible for supplying engine oil to the turbine bearings, ensuring their lubrication and cooling. In diesel engines, the load on the turbocharger is particularly high, so a functioning oil line is crucial to the durability of the entire turbocharging system.

This component is part of the turbocharger and parts category, meaning it's designed to operate at high temperatures and oil pressures. The correct shape and internal diameter of the hose ensure proper lubricant flow, and the matching ends ensure a tight seal with the engine block and turbine housing.

Original origin and fitment to Audi

The cable comes from Audi's original equipment line, ensuring compliance with the manufacturer's factory specifications. This ensures:

• correct cable geometry and length,
• appropriate type of connectors and fasteners,
• compatibility with the lubrication system in diesel engines.

The original design also means the hose is designed for specific Audi models, making installation easier and minimizing the risk of leaks. This is especially important for turbocharged systems, where even minor deviations from the factory design can lead to a drop in oil pressure or turbine overheating.

Used condition – a conscious technical choice

The turbo oil hose offered is in used condition, representing a reasonable compromise between repair cost and maintaining original OEM quality. A used, factory-installed component often meets design requirements better than a replacement of questionable origin.

When choosing aftermarket parts, it's worth carefully comparing different solutions. If you're wondering whether remanufacturing or installing a used part is better for you, the article: Remanufactured or Used Original Part – Which Part to Choose for Repair? may be helpful. There, you'll find practical arguments for using original, disassembled components in key vehicle systems.

Benefits of using the original turbo oil hose

The use of the original oil line in the turbocharging system brings a number of operational benefits:

• Stable turbine lubrication – correct oil flow reduces bearing wear and reduces the risk of seizure.
• Better compliance with factory parameters – original hose geometry supports proper oil pressure throughout the system.
• Trouble-free installation – matched mounting points and connectors shorten the mechanic’s work time and reduce the risk of leaks.
• Consistency with other system components – the hose is designed as part of the complete turbocharger and lubrication system.

Completing the turbocharger system in an Audi

Replacing the turbocharger oil line is often performed in conjunction with servicing or replacing the turbocharger itself. To maintain full system efficiency, it's also worth considering inspecting the other components in this group. If you're looking for other components in the Audi turbocharger and parts category, check out the Audi turbochargers and parts available in our store to find a complete solution tailored to your diesel engine.