Audi A4 B8 A8 D4 3.0 TDI Intake Hose Air Charge Intercooler Pipe 059145737A

Audi A4 B8 A8 D4 3.0 TDI Intake Hose Air Charge Intercooler Pipe is a component from the Lines, hoses and pipes category, designed for 3.0 TDI diesel engine forced induction systems. It is responsible for the stable routing of compressed air between the intercooler and subsequent components of the intake system, which directly impacts the engine's performance and operational efficiency. This is a practical solution for users looking to restore proper airtightness and efficiency to the forced induction system in their Audi models.

Specifications and technical data

• SKU: 059145737A
• Mark: Audi
• Condition: Used
• OEM Part Number: 059145737A
• Substitutable numbers: 059145737A, 059 145 737 A
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Application in the 3.0 TDI engine

The presented hose is designed to work with 3.0 TDI Diesel units, where the forced induction system relies on precise air routing from the turbocharger through the intercooler to the intake manifold. A properly selected intercooler hose limits pressure drops, helps maintain stable boost values, and supports smooth engine operation across the full load range. In practice, this translates into better throttle response, consistent performance, and more predictable vehicle behavior during acceleration.

Technical and functional characteristics

In Audi forced induction systems, it is crucial to maintain the appropriate stiffness of the hose while ensuring resistance to vibrations and temperature fluctuations. The intercooler hose in this model operates under high-pressure conditions and in the vicinity of exhaust system components, which is why its construction is adapted to the loads typical of powerful diesel engines. The proper shape and diameter of the hose ensure correct airflow, and the matched ends allow for a tight connection with other intake components.

For the user, this means the ability to restore factory forced induction system parameters without the need for system modifications. Replacing a worn or leaking hose with an original component from the same design group reduces the risk of power loss, limp mode, and errors related to incorrect boost pressure.

Benefits of using an original Audi hose

Choosing an intercooler hose dedicated to specific Audi models allows for maintaining the integrity of the entire intake system. The original geometry of the component facilitates installation in the engine bay, and proper hose routing minimizes the risk of rubbing against other parts. As a result, the user gains:

• stable boost parameters across the full RPM range,
• reduced risk of leaks and power loss,
• better consistency of engine operation under load,
• compatibility with the factory mounting system in the Audi A4 B8 and A8 D4.

This solution is particularly beneficial when operating high-mileage vehicles, where the intake system is exposed to material fatigue, micro-cracks, and leaks at the joints.

Component condition and installation aspects

The intercooler hose offered in this configuration is a used product, which allows for an economical repair of the forced induction system while maintaining compliance with Audi's factory specifications. This type of component is a good choice in situations where the existing hose has suffered mechanical damage, delamination, or shows signs of leaking under load.

During installation, it is recommended to check the condition of clamps, connectors, and other sections of the intake to avoid secondary leaks. A properly secured hose should operate without excessive tension, maintaining appropriate clearance relative to adjacent components. In combination with a properly functioning intercooler and turbocharger, this helps maintain stable operating conditions for the 3.0 TDI engine.

Audi lines, hoses and pipes – expansion and service of the intake system

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other elements from the same group, such as intake hoses, vacuum hoses, or charge air cooling pipes, check the available parts in the Audi lines, hoses and pipes category.

For drivers interested in broader powertrain diagnostics – especially in vehicles with all-wheel drive and powerful diesel units – our guide on selecting and evaluating drivetrain components may be helpful. You can find more practical tips in the article Clutch and dual-mass flywheel – diagnostics and selection of drivetrain parts, which facilitates planning comprehensive service for higher-power vehicles.