BMW E60 E87 E90 E91 M47N2 Diesel Engine Acoustic Cover Rear 7789009

BMW E60 E87 E90 M47N2 Engine Cover Sound Deadening 7807249 is an original part from the Tappet and Valve Covers group, designed for BMW diesel engines from the M47N2 family. It provides stable coverage for the rear of the diesel engine, improving running smoothness and reducing noise transfer to the cabin.

Specifications and technical data

• SKU: 7807249-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7807249
• Substitutable numbers: 11147807249, 7807249, 11147789009, 7789009, 1438971
• Location on the vehicle: Rear
• Fuel type: Diesel
• Category: Rocker & Valve Covers

Purpose and Function in the Engine System

The presented engine cover is a component mounted at the rear of the power unit, in the area related to the timing mechanism and valve system. As part of the Tappet and Valve Covers category, it is responsible for physically protecting sensitive components from contamination and maintaining proper acoustic insulation.

This solution is particularly important in diesel engines, where mechanical noise generation is higher than in gasoline units. A properly selected cover helps to reduce:

• penetration of valve and tappet operating sounds into the cabin,
• accumulation of dirt and moisture on cylinder head components,
• local temperature fluctuations in the rear engine area.

Compatibility with M47N2 Unit and Diesel System

The cover is designed to work with the M47N2 engine used in BMW E60, E87, and E90 series models with Diesel fuel supply. The design and geometry of the part are adapted to the factory cylinder head layout and the rear of the block, allowing for correct fitting with other engine accessory components.

This ensures proper sealing in the covered area, as well as the correct routing of assembly lines, which is important for both acoustics and subsequent servicing of the power unit.

Assembly and Operational Characteristics

The part is intended for installation in the rear zone of the engine (location: rear), using the factory mounting points provided by the manufacturer. By maintaining the original geometry, it is possible to reuse the original screws and brackets without the need for intervention in the power unit's structure.

As a used part, the cover allows for economical replacement of a damaged or missing component while maintaining compliance with factory BMW standards. This is a practical solution in situations where the existing cover has cracked, deformed, or lost its sound-deadening properties.

Benefits of Using an Original BMW Cover

Using an original engine cover in a BMW diesel unit offers a range of operational benefits:

• Improved Acoustic Insulation – reduction of valve and tappet operating noise, especially from the bulkhead side.
• Mechanical Protection – an additional barrier against dirt and moisture in the cylinder head area.
• Structural Consistency – maintaining the factory layout of covers and sound deadening in the engine bay.
• Service Optimization – easier diagnostics and maintenance when all cover components are complete and correctly installed.

Expansion of the Cover System and Technical Knowledge

If you are planning a comprehensive repair or modernization of the engine area in your BMW and need other parts from the same group, such as additional covers, shields, or sound deadening in the cylinder head area, check the available parts in the BMW Tappet and Valve Covers category.

For diesel units, it is also worth paying attention to the condition of the exhaust gas recirculation system. To better understand its role in a diesel engine and the possibilities of using used parts, read the article EGR: What it is and why it's worth considering used EGR valves, which clearly explains the key technical aspects of this system.