BMW E90 E91 E92 E93 LCI 325d 330d N57 Diesel Engine Acoustic Cover 7800064

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E90 E91 E92 E93 LCI 325d 330d N57 Diesel Engine Acoustic Cover is an original engine bay component designed for facelifted BMW 3 Series models equipped with the N57 unit. It ensures an organized engine bay, improves protection for auxiliary components, and enhances the aesthetics and acoustics of the diesel engine. Thanks to its factory design, it is a convenient solution that is technically tailored to the specific drivetrain configuration.

Specifications and technical data

• SKU: 7800064-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800064
• Substitutable numbers: 7800064, 11147800064
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Other Engine Parts

Purpose and function of the engine cover

The presented cover is dedicated to the front part of the engine bay in facelifted BMW 3 Series E90, E91, E92, and E93 generations, in 325d and 330d versions with the N57 engine. Its task is to protect the upper part of the power unit and auxiliary components from dirt, minor mechanical damage, and harsh operating conditions.

The cover also helps shape airflow within the engine bay, which promotes stable thermal conditions and limits the ingress of dirt into critical points. In the case of diesel engines, this is important for keeping lines, connectors, and fuel injection system components clean.

Construction and fitment for BMW with N57 engine

The cover has been designed specifically for the geometry of the N57 unit and the layout of auxiliary components in the 325d and 330d versions, which translates into precise fitment with factory mounting points. The properly formed surface allows for easy removal and reinstallation during service work, without the need to modify other components.

The arrangement of indentations and mounts is adapted to the layout of lines, manifolds, and service covers, ensuring the cover does not interfere with routine vehicle maintenance. The design intended for installation in the front part of the engine bay ensures the component remains stable even at higher speeds and under the thermal loads typical of diesel engines.

Benefits of using an original cover

Using an original engine cover in a BMW 3 Series with an N57 unit provides a number of practical benefits:

• Better protection of auxiliary components from dust, moisture, and minor road debris.
• Maintaining an organized engine bay appearance, which facilitates diagnostics and service work.
• Reduction of engine noise penetrating the cabin thanks to the additional layer of the cover.
• Factory fitment for the specific diesel engine configuration, with no risk of installation issues.

This component is particularly important in vehicles used intensively, where the engine bay is exposed to frequent contact with dirt and changing weather conditions.

Condition, service application, and installation

The offered cover is a used part, which allows for an economical replacement of a damaged or missing cover while maintaining original BMW specifications. It is a practical solution for both post-accident repairs and for restoring the completeness of the engine bay in cars serviced after years of operation.

Installation is based on factory mounting points in the front part of the engine bay, making the entire operation predictable and requiring no interference with other sub-assemblies. Proper fitment to the diesel engine minimizes the risk of vibrations and unwanted noises during engine operation.

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other components from the same group, such as shields, covers, or additional soundproofing panels, check out the available parts in the Other BMW category.

Technical knowledge and parts selection

When selecting an engine cover for a specific version of the BMW 3 Series with an N57 unit, it is worth paying attention to compatibility with the body style and diesel drivetrain type. Proper fitment of the component is important not only for aesthetics but also for the correct routing of lines, wiring harnesses, and the intake system.

For those interested in a broader context of structural differences between sports and standard versions of premium models, including engine and chassis solutions, our blog article may be helpful: Audi RS vs other models – what is hidden under the hood and chassis?. It allows for a better understanding of how manufacturers design covers, cooling systems, and accompanying elements in different vehicle classes.

If you want to learn more about the trend of using used original components in premium brand cars, check out the post Crisis in the new parts market? Why used originals for premium cars (BMW, Mercedes, Porsche) are the hottest trend in 2026, which explains why choosing verified salvaged parts is currently a rational and technically justified solution.