VW Volkswagen Polo Mk5 Turbocharger Oil Feed Pipe Line Tube 1.4 TDI 04B145771L

VW Volkswagen Polo Mk5 Turbocharger Oil Feed Pipe Line Tube 1.4 TDI is an item from the Oil coolers and lines group, responsible for the stable supply of oil to the turbocharger in the 1.4 TDI unit. A properly selected oil line ensures correct lubrication of the rotor, reduces the risk of seizure, and supports the safe operation of the forced induction system in your Polo Mk5. This is a practical solution for users looking for a proven component with factory geometry and fitment.

Specifications and technical data

• SKU: 04B145771L
• Mark: Volkswagen
• Condition: Used
• OEM Part Number: 04B145771L
• Substitutable numbers: 04B145771L, 04B 145 771 L
• Category: Engine Oil Coolers & Lines

Purpose and function in the lubrication system

The turbocharger oil line in the 1.4 TDI engine is responsible for precisely delivering oil at the correct pressure to the turbine bearings. A properly functioning component:

• maintains a stable oil film on the turbocharger rotor,
• reduces overheating and excessive friction within the bearings,
• supports smooth operation of the power unit under load,
• reduces the risk of turbocharger failure resulting from insufficient lubrication.

By maintaining the factory shape and internal diameter, the line works with the stock oil pump and other lubrication system components, which facilitates installation and subsequent operation.

Compatibility with Volkswagen Polo Mk5 1.4 TDI

The described line has been designed for use in the Volkswagen Polo Mk5 with a 1.4 TDI engine, which translates into proper routing of the oil line relative to the engine block, turbocharger, and accessories. Appropriate profiling and mounting points allow for:

• collision-free routing of the line in the engine bay,
• maintaining required distances from hot components,
• reducing vibrations and stress during engine operation.

Such fitment is particularly important during turbocharger service, when you want quick installation without the need to modify other components.

Product characteristics and benefits of use

The turbocharger oil line from the Oil coolers and lines group is a practical choice when replacing a worn or leaking component. Using this component allows you to:

• restore proper oil flow to the turbocharger after repair or regeneration,
• minimize the risk of oil leaks in the vicinity of the turbine and engine block,
• maintain stable operating conditions for the forced induction system in daily use.

The product comes from the Volkswagen brand, which means factory mounting points are preserved and it is compatible with the design of the 1.4 TDI unit in the Polo Mk5.

Condition, origin, and service application

The item is offered as a used part, which is a cost-effective solution for maintenance repairs or restoring the efficiency of the forced induction system after a failure. This type of component is particularly useful in situations where:

• it is necessary to replace the line after removing the turbocharger,
• corrosion, clogging, or damage to the existing oil line has been identified,
• you want to reduce service costs while maintaining compliance with the factory solution.

Thanks to the preservation of the original geometry, the line fits well into the existing system, which facilitates the mechanic's work and shortens the vehicle's downtime in the workshop.

Technical support and additional materials

To better understand the impact of the lubrication and cooling system on engine and turbocharger longevity, it is worth reading the guide on diagnostics and repair of cooling systems and oil coolers: Engine cooling system – overheating, repair, and used radiators. You will find practical tips there on how to maintain stable operating conditions for the power unit.

If you are planning a comprehensive repair or upgrade of the engine area in your Volkswagen and need other items from the same group, such as oil lines, oil coolers, or additional sections of the lubrication line, check the available parts in the Volkswagen oil coolers and lines category.

More information on how the availability of used OEM parts affects repair time and service costs can be found in the article: Availability of car parts off the shelf vs. repair time – how do used OEM parts shorten workshop stays?.