BMW E90 E91 LCI F20 F21 F30 Acoustic Cover Rear Engine Diesel N47N 8570012

The BMW E90 LCI F20 Engine Cover Sound Deadener is an original BMW part designed for installation at the rear of a vehicle with a diesel engine. It effectively reduces engine noise and provides additional protection for components, enhancing acoustic comfort and the overall refinement of the powertrain.

Specifications and technical data

• SKU: 8570012
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7810839
• Substitutable numbers: 11147810839, 7810839, 11148570012, 8570012
• Location on the vehicle: Rear
• Fuel type: Diesel
• Tire profile: 65535
• Category: Other Engine Parts

Purpose and Function of the Engine Cover Sound Deadener

The presented BMW engine cover sound deadener is designed for diesel-powered vehicles, where vibration and noise levels are higher than in petrol engines. This component is mounted at the rear of the engine bay or powertrain assembly, creating an acoustic barrier between the engine and the vehicle body.

The cover serves several key technical functions:

• reduction of noise and vibration transfer from the engine to the passenger cabin,
• protection of engine components from road debris,
• stabilization of airflow around the powertrain,
• limitation of the spread of oil contamination and moisture.

Benefits of Use in Diesel Engines

In diesel-powered vehicles, appropriate sound deadening significantly impacts perceived driving comfort. The use of this cover allows for:

• reduction of the characteristic clatter and resonances of a diesel engine,
• a more subdued engine sound during acceleration,
• limitation of noise transmitted to the interior at higher engine speeds.

This ensures the car maintains proper operational refinement, and the cabin becomes a more pleasant environment during daily use.

Technical Characteristics and Fitment

The cover belongs to the Other category, meaning it is a specialized body-engine component dedicated to a specific BMW construction. The design considers:

• precise fitment to the rear of the powertrain assembly,
• maintenance of adequate ground clearance for suspension and exhaust system components,
• compatibility with factory mounting points.

Proper fitment of the cover is important not only for the effectiveness of sound deadening but also for correct heat dissipation and maintaining proper airflow around the engine.

Condition of the Part and Practical Application

The offered cover is a used original part, which in practice means its factory geometry and compatibility with the vehicle's construction are preserved. For the user, this translates to:

• easier installation in place of the factory cover,
• no need for modifications to mounting points,
• retention of the acoustic properties intended by the manufacturer.

This solution is suitable for both replacing a damaged cover and restoring the completeness of the engine bay after mechanical repairs.

Other BMW Parts – Other Category

If you are looking for other parts in the Other BMW category to complement your engine bay or underbody setup, check out our dedicated offer at Other BMW. You will find a wide selection of auxiliary components, covers, and mounting elements tailored to various models of this brand.

Technical Knowledge and Powertrain Development

To compare the characteristics of different engine designs and their installation methods, it is worth familiarizing yourself with an analysis of sports powertrains. In our guide Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, we discuss the differences in the construction of engines, braking systems, and chassis, which helps to better understand the importance of elements like covers and sound deadening in modern cars.