BMW E90 E91 Diesel Engine Underbonnet Tray Shield Protection Screen

Visual condition of the part

The product shows signs of use visible in the photos.

BMW E90 E91 Diesel Engine Underbonnet Tray Shield Protection Screen is a factory-made protective component designed for installation in the front undercarriage of BMW vehicles with diesel engines. This type of shield stabilizes airflow under the car, limits the ingress of contaminants, and supports the protection of critical powertrain components. As a result, it serves as a practical addition to the engine area in vehicles used daily in varied road conditions.

Specifications and technical data

• SKU: 7059387-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7059387
• Substitutable numbers: 51757059387, 7059387, BG
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Splash Guards & Mud Flaps

Purpose and function of the engine under-tray

The presented shield has been designed for installation in the front part of the body, in the engine bay area. Its task is to limit direct contact between the powertrain and auxiliary components with water, mud, road salt, and small stones. In the case of diesel vehicles, this is of particular importance, as this configuration involves many sensitive components under the hood, whose additional protection contributes to operational comfort.

A properly fitted engine under-tray also helps maintain more stable thermal conditions in the engine bay, which promotes uniform operation of the powertrain and reduces unwanted air turbulence under the vehicle.

Benefits of using an original BMW shield

Using a dedicated engine under-tray in a BMW 3 Series E90/E91 generation brings a number of practical benefits:

• better protection of the lower part of the engine and auxiliary components against road contaminants,
• reduced risk of mechanical damage from small stones and other debris on the road,
• more orderly airflow under the car, which promotes driving stability,
• easier maintenance of cleanliness in the engine bay area.

Thanks to the factory fitment, installation is predictable, without the need for modifications or adjusting mounts. This solution is particularly beneficial for users who expect consistency with the vehicle's original design.

Technical characteristics and installation

The shield belongs to the group of body components mounted in the front zone of the vehicle, in the area under the engine. It is adapted to work with diesel units, which means it is properly profiled and matched to the powertrain in Diesel versions. The design provides spaces for factory mounting points, which facilitates service and removal if necessary for inspections or repairs.

The product comes from the Mudflaps category, which in practice means that its main role is to limit water and mud splashing and to protect against the direct impact of external factors. In combination with other wheel arch and undercarriage elements, it creates a coherent system protecting the lower part of the vehicle.

Product condition and practical application

The offered shield is a used item, which in the case of original BMW body parts often represents a reasonable compromise between cost and functionality. This type of component, while maintaining correct geometry and mounting points, still effectively fulfills its protective function. It is a good solution for users who want to restore the factory under-engine covering after damage or removal of the previous tray.

Choosing an original engine under-tray is particularly important in cars used year-round, on roads with poorer surfaces, or in conditions of increased exposure to water and contaminants. This ensures more predictable vehicle behavior and stable protection of key powertrain components.

Expanding BMW body area protection

If you are planning a comprehensive repair or upgrade of the body area in your BMW and need other elements from the same group, such as additional shields, plates, or water splash guards, check out the available parts in the BMW Mudflaps category.

If you are also considering using aftermarket components in other areas of the vehicle, it is worth familiarizing yourself with practical tips on selecting used subassemblies – you will find useful information in the article The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?.