Audi A4 B9 Engine Acoustic Cover Trim Panel 1.4 TFSI CVNA Petrol 04E103925E

Visual condition of the part

The product shows signs of use visible in the photos.

Audi A4 B9 Engine Acoustic Cover Trim Panel 1.4 TFSI CVNA Petrol is a precisely engineered panel mounted in the engine bay, designed to reduce engine noise and organize the space around it. Thanks to its perfect fit for the specific 1.4 TFSI CVNA petrol variant, it ensures stable mounting and proper operation of the powertrain without unwanted vibrations of the cover. This is a practical solution for users who want to maintain the factory character of the engine bay and improve acoustic comfort inside the vehicle.

Specifications and technical data

• SKU: 04E103925E
• Mark: Audi
• Condition: Used
• OEM Part Number: 04E103925E
• Substitutable numbers: 04E103925E, 04E 103 925 E
• Fuel type: Petrol
• Part type: Valve Cover
• Category: Rocker & Valve Covers

Purpose and technical function

The presented panel belongs to the Tappet and valve covers group and is a component of the upper engine housing system in the Audi A4 B9 generation with the 1.4 TFSI CVNA petrol engine. Its design was developed by the vehicle manufacturer to:

• dampen engine noise in the mid and high RPM range,
• reduce the transmission of vibrations to the body,
• protect the upper part of the engine from dirt in the engine bay,
• provide an aesthetic finish to the space under the hood.

The acoustic cover also serves an auxiliary role during maintenance – after its removal, convenient access to selected components is obtained, which facilitates service and diagnostic work.

Compatibility with the petrol unit

The element has been designed to work with a petrol fuel type engine, which is significant for the shape, placement of mounting points, and the routing of cables and accessories. The fitment to the specific 1.4 TFSI CVNA configuration allows for maintaining:

• proper adhesion of the cover to the upper part of the engine,
• collision-free routing of cables and accessory components,
• stability during engine operation across the full temperature range.

As a result, the user receives a part that works with the factory engine bay architecture, without the need for modifications or adjustments to the mounts.

Characteristics of the original Audi part

The engine acoustic cover comes from the Audi brand and is a component compliant with the factory vehicle specification. This means:

• preservation of the original geometry and mounting points,
• compatibility with factory brackets and supports,
• consistent appearance of the engine bay with other housing elements.

As a used aftermarket part, the panel is a cost-effective solution for drivers who want to restore the completeness of the engine housing after damage or loss of the original cover, while maintaining factory fitment and aesthetics.

Practical application and benefits of installation

Installing this cover in an Audi A4 B9 1.4 TFSI CVNA allows for organizing the space under the hood and reducing the noise level reaching the cabin. This is particularly important in daily use, where acoustic comfort affects the perceived engine refinement. Additionally, the panel:

• makes it easier to keep the engine bay clean,
• reduces the risk of accidental contact with hot engine components,
• allows for maintaining a consistent, factory look of the vehicle, which is important for resale.

For workshops and service centers specializing in the Audi brand, using the original acoustic cover means faster installation and a predictable final result, without the need to adjust replacements with uncertain geometry.

Expansion of the Audi engine housing

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 covers, soundproofing panels, or top covers, check the available parts in the Audi Tappet and valve covers category.

For owners of VAG group cars who want to better understand how to optimally use the market for used and replacement parts, a guide article may be helpful – you can find more practical tips in the material on economical Volkswagen servicing using original parts.