BMW E81 E87 LCI E90 E91 120i 320i N46N Manifold Engine Cover Acoustic 7571703

BMW E81 E87 LCI E90 E91 120i 320i N46N Manifold Engine Cover Acoustic is an original component designed for N46N engines in compact and mid-size BMW 1 and 3 series models after the facelift. It provides stable coverage for the manifold area, which helps maintain proper engine operating conditions and keeps the engine bay tidy. Thanks to its OEM design, the cover is precisely matched to factory mounting points, facilitating installation and subsequent maintenance.

Specifications and technical data

• SKU: 7571703
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7571703
• Substitutable numbers: 11617571703, 7571703
• Category: Other Engine Parts

Purpose and function of the manifold cover

The presented cover is a component dedicated to the N46N engine used in BMW E81, E87 LCI, E90, and E91 models. Its task is to protect the manifold area from external contaminants and organize the space around the power unit. The properly selected shape allows for maintaining correct airflow in the engine bay, which is important for both component durability and ease of maintenance during inspections.

The manifold cover helps limit the ingress of dirt, small stones, or moisture into the vicinity of sensitive components, which can reduce the risk of premature wear. This is particularly important in cars operated in varied road conditions, where the engine bay is exposed to intense dirt.

Construction, fitment, and installation

As a component from the BMW range, the manifold cover has been designed for full compatibility with factory mounts in E81, E87 LCI, E90, and E91 models with the N46N engine. Its properly contoured design facilitates correct positioning relative to the manifold and adjacent components, minimizing the risk of incorrect installation.

When replacing the cover, it is worth paying attention to:

• the condition of the mounting points in the vehicle,
• proper seating of all clips,
• absence of interference with other elements in the engine bay.

This approach allows for maintaining the factory layout of covers and wiring, which facilitates subsequent service work and diagnostics.

Characteristics of the used component

The offered manifold cover is a second-hand part, which allows for economical repair while maintaining original BMW specifications. A used OEM component usually features better fitment than many aftermarket replacements, meaning it does not require additional modifications or adjustments after installation.

Before installation, a standard visual inspection, surface cleaning, and checking that all mounts and clips are complete is recommended. A properly prepared cover will work stably in the engine bay, without unwanted vibrations or noise.

Benefits of using an original manifold cover

Using a dedicated manifold cover in the N46N engine brings a number of practical benefits:

• Better protection of components around the manifold from dirt and minor mechanical damage.
• Maintaining an organized engine bay, which facilitates service and diagnostic work.
• Consistency with the factory BMW design, without interfering with the original mounting system.
• Possibility of economical repair through the use of a used part, while maintaining OEM quality.

For drivers who want to better understand the importance of original components in a car and the differences between standard and sports versions, comparative material regarding engine and chassis construction may be helpful – you can find it in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of used parts on vehicle characteristics.

If you are interested in the broader context of using OEM elements from the secondary market and want to learn why used original components can be a reasonable choice in terms of safety and costs, it is worth reading the guide Quality assurance and OEM safety – why used original car parts are the best choice for your car?.

Supplementing equipment in the BMW engine bay

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, brackets, or additional mounts, check the available parts in the Other BMW category.

Selecting the right equipment elements around the power unit allows for maintaining structural consistency while limiting the risk of unplanned service downtime. Thanks to this, the BMW E81 E87 LCI E90 E91 120i 320i N46N Manifold Engine Cover Acoustic can become an important addition to work on the engine system, restoring factory order and functionality in the engine bay.