BMW E60 LCI E90 335d 535d M57N2 Engine Acoustic Cover Trim Insulation 7796091

BMW E60 LCI E90 335d 535d M57N2 Engine Acoustic Cover Trim Insulation is an original component from the Cylinder Heads group, designed for installation in the front part of the engine bay. Engineered by BMW as a factory cover, it ensures an organized space above the power unit and improves acoustic comfort inside the vehicle.

Specifications and technical data

• SKU: 7807245
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7807245
• Substitutable numbers: 11147807245, 7807245, 11147796091, 7796091, 11147800572, 7800572
• Location on the vehicle: Front
• Category: Cylinder Heads

Purpose and function in the engine bay

The engine acoustic cover dedicated to M57N2 units in BMW 3 and 5 series models serves several important structural tasks. It is responsible for covering the upper part of the cylinder head assembly, organizing the routing of wires and auxiliary components, and reducing the transmission of engine operating noise into the cabin. Its placement in the front of the engine bay allows for effective damping of the sounds produced by injectors, camshafts, and other cylinder head components.

Thanks to the factory BMW design, the cover maintains the correct geometry relative to the cylinder head and accessories, which facilitates installation and ensures stable mounting without any additional modifications. This solution is particularly beneficial when servicing diesel units, where proper sound insulation is significant for daily driving comfort.

Construction and fitment for the M57N2 unit

The presented cover has been developed as a component that works with the M57N2 engine cylinder head, used in versions such as the 335d and 535d. The construction is optimized for the shape of the cylinder head, the arrangement of mounts, and the routing of accessories, which translates into precise fitment with factory mounting points.

As a part from the Cylinder Heads group, the acoustic cover is an integral element of the system above the cylinder head – it does not interfere with engine performance parameters but influences the refinement of the entire powertrain. The properly selected damping material and the shape of the cover help to reduce resonances and vibrations that would otherwise be noticeable in the cabin.

Benefits of using an original BMW cover

Using an original BMW engine acoustic cover brings a number of practical advantages:

• secure fitment to the cylinder head and accessories without the need for modifications,
• maintenance of the factory sound insulation level of the power unit,
• organized engine bay appearance, facilitating service work,
• consistency with other engine compartment components.

The item in used condition is a reasonable choice for repairs and restorations, especially in the case of cars with powerful diesel units, where the cost of new components can be high. An original cover from the secondary market allows you to restore proper sound insulation and engine bay aesthetics while maintaining a favorable budget.

Professional use in BMW service and restoration

This type of engine acoustic cover is often used in professional workshops specializing in BMW, both for standard repairs and for the comprehensive restoration of E60 LCI and E90 models. Thanks to its factory origin, it fits well with the requirements of users who expect to maintain the original vehicle specification, without compromises in terms of fitment and functionality.

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, seals, or components above the cylinder head, check the available parts in the BMW Cylinder Heads category.

Who is this part for and how to use it

This engine acoustic cover will be suitable for BMW owners who:

• are restoring the factory configuration of the M57N2 unit after mechanical repairs,
• want to improve acoustic comfort after the removal or damage of the previous cover,
• are preparing the car for long-term use or sale, taking care of the engine bay aesthetics.

If you are interested in a broader context of using used parts when refreshing older generations of BMW and other premium brands, it is worth reading the guide The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years, which discusses practical modernization scenarios using components from the secondary market.