BMW E60 E90 E91 LCI M57N2 Diesel Engine Acoustic Cover Rear 7796092

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E60 E90 E91 LCI M57N2 Diesel Engine Acoustic Cover Rear is an original component designed for diesel units, which improves the engine's operating refinement and protects components in the rear part of the engine bay. Thanks to its factory geometry and fitment for specific engine versions, it ensures stable mounting, effective noise dampening, and reduced vibration transfer to the chassis. This is a practical solution for users who want to maintain the factory acoustic properties of their BMW 3 Series E90 with the M57N2 335d engine.

Specifications and technical data

• SKU: 7796092-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7807246
• Substitutable numbers: 11147807246, 7807246, 11147796092, 7796092
• Location on the vehicle: Rear
• Fuel type: Diesel
• Category: Other Engine Parts

Purpose and function of the BMW E90 335d engine cover

The presented engine cover has been designed specifically for the diesel unit in the BMW E90 335d model with the M57N2 engine. Its task is to reduce the noise generated by the running diesel engine, improve acoustic comfort inside the cabin, and protect components located in the rear part of the engine bay. The design, tailored to the specific powertrain, allows for maintaining proper airflow and service access to key components.

Construction, placement, and fitment

The cover operates in the rear zone of the engine bay, where it is exposed to elevated temperatures, vibrations, and contaminants. The applied mounting geometry allows for secure seating on factory mounting points, which minimizes the risk of unwanted resonance and looseness. The element was developed with the diesel engine in mind, which is why its shape and structure are adapted to the operating characteristics of the diesel unit, including the specific distribution of vibrations and thermal loads.

Benefits of using an original acoustic cover

Using an original engine cover in the BMW E90 335d brings a number of practical operational benefits:

• reduction of noise and vibrations transferred from the powertrain to the cabin,
• protection of components in the rear part of the engine bay against dirt and minor mechanical damage,
• maintenance of the vehicle's factory acoustic characteristics,
• better mounting stability compared to randomly fitted replacements,
• consistency with the original BMW engine bay design.

As a result, the cover is a sensible choice when replacing a worn or damaged part, allowing you to maintain technical consistency with the manufacturer's design.

Characteristics of the used part

The offered component is in a used condition, meaning it comes from disassembly and may show signs of normal wear while maintaining the functionality required for further use. For many BMW users, this represents a favorable compromise between cost and maintaining original build quality. In the case of engine covers and soundproofing, it is particularly important that the element retains its structural integrity and the ability to be properly mounted on factory attachment points.

Compatibility, identification, and part selection

To correctly select the cover for a specific BMW 3 Series E90 with the M57N2 335d engine, it is worth verifying compatibility with the manufacturer's markings and the placement on the vehicle. The product has assigned OEM part numbers and interchangeable numbers, which facilitates clear identification in service catalogs and parts selection systems. This information is particularly useful when comparing the element with the currently installed cover in the vehicle or when consulting with a mechanic.

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

Technical support and expert knowledge

When working with powerful diesel units, such as the M57N2 in the BMW 335d, it is particularly important to understand the impact of engine accessories, the exhaust system, and soundproofing elements on the overall operating refinement and durability of the powertrain. To compare the characteristics of different design solutions in high-performance cars, it is worth reading the analysis of sports powertrains in the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers design engines, brakes, and chassis in high-output vehicles.

If you are considering using original used parts to maintain the technical consistency of the vehicle while optimizing costs, the guide Original used parts vs. car resale price – how not to lose money? may also be helpful, as it discusses the impact of such solutions on the later value of the car.