VW Volkswagen Caddy 2k Audi A4 S4 B8 Turbocharger Vacuum Box 04L198716E

VW Volkswagen Caddy 2k Audi A4 S4 B8 Turbocharger Vacuum Box is a component from the Turbochargers and parts group, designed for the forced induction system in Audi vehicles and selected VW models. The product comes from dismantling, which allows for an economical yet technically sound repair of the turbocharging system while maintaining the factory design and fitment.

Specifications and technical data

• SKU: 04L198716E-1
• Mark: Audi
• Condition: Used
• OEM Part Number: 04L198716E
• Substitutable numbers: 04L198716E, 04L 198 716 E, 40129040
• Category: Turbos & Parts

Purpose and function in the forced induction system

The described vacuum box works with the turbocharger, responsible for precise control of the boost pressure in the engine. A properly functioning component of this type:

• stabilizes boost pressure across the full range of engine loads,
• limits the risk of overboost and associated ECU errors,
• supports maintaining proper vehicle dynamics while preserving the correct operating culture of the power unit.

By maintaining the original geometry and operating characteristics, this part allows for the restoration of factory turbocharging system parameters without the need for installation modifications.

Benefits of using an original dismantled component

Using an original component from the Turbochargers and parts group instead of a worn or damaged element allows for compliance with the manufacturer's factory design. In practice, this means:

• secure fitment to mounts and accessories in the engine bay,
• cooperation with the factory engine control unit without the need for software adaptation,
• reduction of the risk of leaks and boost pressure regulation problems.

For Audi and VW users who want to restore the efficiency of the turbocharging system in a way similar to factory solutions, this is a technically consistent and cost-effective solution.

Application in Audi and VW vehicles

The presented element is intended for Audi brand vehicles, as well as the VW Caddy 2K, where the turbocharging system is based on a similar design. Replacing the vacuum box is particularly recommended in the case of:

• power loss and noticeable "sluggishness" of the power unit,
• appearance of errors related to boost pressure,
• uneven power delivery in the mid and high RPM ranges.

Selecting parts according to the manufacturer's markings and structural compatibility allows for trouble-free installation and restoration of proper turbocharger operation.

Condition, origin, and build quality

The element comes from dismantling and has a status of used, which is important for the informed selection of spare parts. Components of this type are frequently chosen by users who:

• are looking for a reasonable compromise between repair cost and quality,
• prefer original design solutions over replacements with uncertain parameters,
• want to maintain the consistency of the turbocharging system with the manufacturer's factory assumptions.

Manufacturer markings, including the OEM part number and available interchangeable numbers, enable precise verification of compatibility with a specific engine version and vehicle model year.

Support with selection and further upgrades

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 turbocharger housings, control actuators, or additional forced induction accessories, check the available parts in the Audi Turbochargers and parts category.

For users interested in a broader perspective on using dismantled parts in modern cars, particularly in the context of electronics and control systems, our blog article may be helpful: Driving pleasure for years – how to take care of iDrive systems and electronic modules in BMW 3 and 5 series models using dismantled parts?