Audi A4 B7 2.0 TFSI Petrol Turbo Intercooler Air Intake Hose Pipe 8E0145737Q

Audi A4 B7 2.0 TFSI Petrol Turbo Intercooler Air Intake Hose Pipe is an original intake system component designed for the turbocharged petrol engine. It ensures a tight and stable flow of compressed air between the turbocharger and the intercooler, which translates into proper engine operation and the maintenance of factory parameters. This used OEM component is a sensible choice for servicing the turbocharging system in an Audi A4 B7 2.0 TFSI.

Specifications and technical data

• SKU: 8E0145737Q
• Mark: Audi
• Condition: Used
• OEM Part Number: 8E0145737Q
• Substitutable numbers: 8E0145737Q, 8E0 145 737 Q
• Location on the vehicle: Left
• Fuel type: Petrol
• Category: Other Air & Fuel Delivery

Purpose and function in the intake system

The presented air hose is a component of the turbocharged petrol engine's intake system, responsible for transporting compressed air from the turbocharger to the intercooler or further within this circuit. Stable airflow under pressure is crucial for maintaining proper boost, a correct air-fuel mixture, and repeatable performance of the 2.0 TFSI unit.

The placement on the left side of the vehicle determines the geometry of the pipe and its fitment to the factory routing of lines in the engine bay. This ensures an appropriate distance from heating and moving parts, which reduces the risk of abrasion, overheating, and leaks.

Benefits of using an original air hose

Using an original air pipe in the turbo-intercooler system allows for maintaining the factory engine performance characteristics. The properly selected internal diameter, shape, and stiffness of the hose influence:

• stable boost pressure across the entire rev range,
• correct throttle response without delays resulting from air leaks,
• reduction of power drops caused by leaks,
• preservation of serial combustion parameters and engine control system operation.

The used OEM element is structurally matched to the petrol unit, which facilitates installation and helps avoid problems typical of aftermarket replacements with different geometry. It is a practical solution for repairs following hose failure, cracks, or material wear.

Compatibility with the 2.0 TFSI petrol unit

The hose has been designed for a petrol engine with direct injection and turbocharging, where airflow under pressure is particularly sensitive to any leaks. The design of the hose takes into account the specifics of the TFSI unit's operation, including variable loads, temperature changes, and vibrations generated by the powertrain.

By maintaining the original geometry of the intake system, the engine control unit receives conditions close to factory specifications, which promotes stable operation of the boost and mixture management systems. This is important both in daily use and during dynamic driving, where the turbo-intercooler system operates under higher loads.

Condition, installation, and service application

The item comes from dismantling and is intended for reinstallation in a vehicle where it is necessary to replace a damaged or worn air hose. The used component allows for an economical repair while maintaining a design consistent with the factory Audi project.

Before installation, a standard inspection of the intake system is recommended, including checking other hoses, clamps, and connections to the turbocharger and intercooler. A properly secured hose minimizes the risk of depressurization at high boost pressure and ensures predictable behavior of the powertrain.

Expanding Audi turbocharging system service

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 additional air hoses, intake pipes, or mounting elements, check the available parts in the Other Audi category.

To better understand the differences in the construction and loads of the intake system between standard and sports versions, it is worth reading an article describing the characteristics of higher-power units and their accessories – details can be found in the material Audi RS vs other models – what is hidden under the hood and chassis?.