Underfloor Cover BMW E90 E91 M Sport Petrol Engine Underbonnet Shield Protection

Visual condition of the part

The product shows signs of use visible in the photos.

Underfloor Cover BMW E90 E91 M Sport Petrol Engine Underbonnet Shield Protection is a factory-made protective component designed for installation in the front undercarriage of BMW models with petrol engines. Designed specifically for the M Sport package, the shield effectively protects the lower area of the powertrain from dirt, water, and mechanical damage. This used OEM part is a sensible choice for drivers looking for a technically compatible solution at an attractive price.

Specifications and technical data

• SKU: 8040111-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8040111
• Substitutable numbers: 51758040111, 8040111, 51758040105, 8040105
• Location on the vehicle: Front
• Fuel type: Petrol
• Category: Other Exterior Parts & Accessories

Purpose and function of the engine shield

The engine shield in the M Sport version plays a key role in protecting the lower part of the powertrain and auxiliary components in the front area. It secures the components against:

• impacts from small stones and other road debris,
• direct contact with water, mud, and road salt,
• excessive dirt accumulation, which can hinder service and diagnostics.

Additionally, the properly shaped shield helps organize airflow under the car, which promotes thermal stability in the engine bay and reduces unwanted turbulence.

Compatibility with BMW M Sport models

The component has been developed specifically for the BMW E90/E91 series body with the M Sport package, ensuring proper fitment with factory mounting points and bumper geometry. This means:

• a compatible shape matched to the lines of the M Sport bumper,
• pre-designed locations for standard mounts and accessories,
• maintenance of the appropriate distance from exhaust system components and suspension.

Such fitment reduces the risk of improper installation, unwanted vibrations, or rubbing against other components, which is particularly important in vehicles used dynamically.

Benefits of installation in petrol cars

In petrol-powered vehicles, the engine shield helps maintain stable operating conditions for the powertrain in the front of the vehicle. The main advantages include:

• better protection of the oil pan and lower auxiliary components,
• reduction of dirt entering the engine bay from the undercarriage side,
• more orderly flow of cooling air in the engine zone.

As a result, the risk of accidental damage during daily use is reduced, and inspections and repairs can be performed in more predictable conditions.

Characteristics of the used component

The offered engine shield is a used part, which in practice means a favorable compromise between cost and functionality. Such components retain their factory geometry and mounting method while allowing for cost savings compared to new replacements. The used OEM component is particularly attractive for post-accident repairs, replacing a damaged shield after contact with an obstacle, or restoring a car to a near-factory state.

Selection support and additional materials

When selecting a shield, it is worth paying attention to compatibility with the body version, styling package, and fuel type. In case of doubt, it is helpful to compare the shape and mounting points with the currently installed element. If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other parts from the same group, such as covers, under-engine plates, or additional protective screens, check the available parts in the Other BMW category.

For those interested in comparing technical solutions used in sports versions of cars, such as reinforced drivetrains or modified chassis, our blog article may be useful: Audi RS vs other models – what is hidden under the hood and chassis?, which discusses the structural differences between standard and sports versions.