Audi A8 D4 4H Intercooler Pressure Hose Pipe 3.0 TDI Diesel Engine 4H0145737R

Audi A8 D4 4H Intercooler Pressure Hose Pipe is a component from the Lines, hoses and pipes group, designed for the 3.0 TDI diesel engine boost system. It is responsible for the stable routing of compressed air between the intercooler and other intake system components, which directly impacts the engine's performance and smooth operation.

Specifications and technical data

• SKU: 4H0145737R
• Mark: Audi
• Condition: Used
• OEM Part Number: 4H0145737R
• Substitutable numbers: 4H0145737R, 4H0 145 737 R, 4H0145673P, 4H0 145 673 P
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and function in the intake system

The described intercooler pipe has been designed for the 3.0 TDI Diesel engine in the Audi A8 D4 generation. Its task is to provide a tight and stable path for boost air, which, after being cooled in the intercooler, travels to the intake manifold. A properly selected hose minimizes pressure drops, reduces the risk of leaks, and supports the consistent operation of the turbocharger.

Thanks to its factory geometry and fitment for the specific system, the pipe maintains the correct routing relative to other engine bay components, which facilitates installation and reduces material stress during operation.

Benefits of using an original intercooler hose

Using a hose from the Lines, hoses and pipes group dedicated to the Audi A8 D4 3.0 TDI allows for maintaining boost system performance parameters at the level intended by the manufacturer. In practice, this means:

• maintaining proper boost pressure across the entire rev range,
• reducing the risk of power loss resulting from intake leaks,
• stable engine operation under load, e.g., during acceleration or highway driving,
• better performance consistency compared to parts with uncertain fitment.

This solution is particularly recommended when replacing worn or damaged intake system components, where the compatibility of shape, diameters, and mounting method is crucial.

Characteristics and fitment for the Audi A8 D4 3.0 TDI

The intercooler pipe has been prepared as a component intended for a specific configuration of the diesel engine in the Audi A8 D4. Properly selected connection diameters and the pipe profile allow for a correct connection to the intercooler and other intake components without the need for system modifications.

The product comes from the Audi brand range, which in practice means maintaining factory manufacturing standards and compatibility. This type of hose is the right choice when the priority is to maintain the original engine operating characteristics and compliance with service documentation.

Product condition and service application

The item is offered as a secondary market part in Used condition, making it an attractive solution for repairs where a reasonable cost is important while maintaining the original design. This type of hose will work well both for standard replacement of a worn part and for repairs following mechanical damage within the intake system.

In practice, the intercooler pipe can be used, among other things, for:

• mechanical damage to hoses (cracks, abrasions, leaks),
• diagnosing power loss related to intake leaks,
• comprehensive maintenance of the boost system in the 3.0 TDI engine.

Expanding the intake system and selecting additional components

If you are planning a comprehensive repair or upgrade of the engine area in your Audi and need other components from the same group, such as additional intake lines, flexible pressure hoses, or return pipes, check out the available parts in the Audi Lines, hoses and pipes category.

To better plan service work and reduce vehicle downtime, it is worth checking out the guide describing the importance of a wide assortment in one warehouse – details can be found in the article No more waiting for weeks – how a wide assortment in one warehouse really shortens your car's downtime at the mechanic?.