Audi RS4 B7 Jet Pump Intake Vacuum System Pipe Hose Line 4.2 FSI 078133753A

Audi RS4 B7 Jet Pump Intake Vacuum System Pipe Hose Line 4.2 FSI is an original vacuum system component, classified under the Cooling system pipes and hoses group, designed to operate in the demanding environment of the 4.2 FSI engine. This used OEM part ensures factory-spec flow geometry and stable operating conditions for vacuum-dependent systems, which translates into predictable engine performance.

Specifications and technical data

• SKU: 078133753A
• Mark: Audi
• Condition: Used
• OEM Part Number: 078133753A
• Substitutable numbers: 078133753A, 078 133 753 A, 079133783P, 079 133 783 P, 079133783Q, 079 133 783 Q
• Part type: Pipe
• Category: Coolant Hoses

Technical characteristics and system role

The Jet Pump vacuum pipe in the 4.2 FSI engine is responsible for the controlled transport of vacuum between engine auxiliary components. The pipe's construction is adapted to operate at elevated engine bay temperatures and to withstand contact with fuel and oil vapors, requiring durable materials and precisely selected internal diameters. By maintaining the factory shape and dimensions, the pipe preserves correct vacuum levels at critical points in the system, reducing the risk of power loss, unstable idle, or engine control unit errors related to system leaks.

Why choose an original vacuum pipe

For high-performance units such as the 4.2 FSI in the RS4 B7, using an original vacuum pipe is crucial for consistent operating parameters. The OEM component ensures:

• factory fitment for connectors and fittings in the engine bay,
• stable vacuum maintenance across a wide load range,
• compatibility with factory routing and mounting brackets. Using an original part allows for maintaining the consistency of the entire system according to the manufacturer's design, which is particularly important when servicing sports-oriented vehicles, where even minor leaks can affect engine refinement.

Application in service practice

Replacing the Jet Pump vacuum pipe is recommended when symptoms such as audible air suction near the lines, fuel system errors, or unstable idle occur. Installing an original element from the Cooling system pipes and hoses group allows for restoring proper sealing and flow parameters without the need for system modifications. The pipe is designed to work in the specific 4.2 FSI engine configuration, which facilitates quick installation for the mechanic and reduces the time required for assembly. As a result, the service can be performed predictably, without experimenting with universal replacements.

Compatibility and interchangeable part numbers

The component has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification in service catalogs and parts selection systems. For the user, this means the ability to precisely match the pipe to a specific vehicle configuration without the risk of error. Thanks to this, the Jet Pump vacuum pipe can be used as a direct replacement in vehicles for which the manufacturer intended its use, maintaining full compliance with factory technical requirements.

Condition and benefits of choosing a used OEM component

The product is offered as a used original component, which allows for combining reasonable cost with the preservation of factory specifications. In service practice, this often represents a beneficial alternative to cheaper replacements of uncertain material quality and workmanship. When selecting used auxiliary system components, it is worth following the vehicle manufacturer's experience and compliance with technical documentation. Additional tips on making informed choices regarding used auxiliary parts, including those related to engine operation, can be found in the article: No cooling in the car: original used air conditioning compressor as a proven alternative.

System expansion within pipes and hoses

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 lines, flexible hoses, or sections connecting the cooling system to auxiliary equipment, check the available parts in the Audi cooling system pipes and hoses category.

Summary

Audi RS4 B7 Jet Pump Intake Vacuum System Pipe Hose Line 4.2 FSI is a technically matched, original vacuum system component, classified as part of the pipes and hoses operating in the engine bay. Choosing a used OEM part allows you to maintain consistency with the factory design, ensuring stable engine operating conditions and predictable vehicle behavior in both daily and dynamic use.