Mercedes W447 OM654.920 Diesel Engine Mount Bracket Support Holder A6542230404

Mercedes W447 OM654.920 Diesel Engine Mount Bracket Support Holder is a precision-engineered engine mounting component, designed specifically for the diesel powertrain in the W447 body. Stable engine support on the right side translates into reduced vibrations, improved refinement, and predictable drivetrain behavior during daily operation.

Specifications and technical data

• SKU: A6542230404
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6542230404
• Substitutable numbers: A6542230404, A 654 223 04 04
• Location on the vehicle: Right
• Fuel type: Diesel
• Category: Engine Mounts

Purpose and function in the drivetrain

The presented bracket, also referred to as an engine mount arm, operates in the area where the diesel unit is secured to the vehicle structure. Its tasks include:

• transferring loads from the engine to the vehicle structure,
• maintaining the correct geometry of the powertrain,
• working in conjunction with Engine mounts to dampen vibrations and oscillations.

Being dedicated to the diesel unit ensures appropriate rigidity and operating characteristics under typical loads for diesel engines.

Construction, placement, and fitment

The bracket is designed to operate on the right side of the engine bay, which is significant for both force distribution and the routing of other components (exhaust system, engine accessories, hoses). The construction is adapted to the factory mounting points in the W447 body and to the corresponding engine mounts, which facilitates installation and the maintenance of original geometry.

Original origin from the Mercedes brand means maintaining factory dimensional tolerances, proper fitment with adjacent components, and compatibility with the mounts and mounting bolts specified by the manufacturer.

Benefits of using an original engine mount bracket

Using a dedicated bracket in the drivetrain provides measurable operational benefits:

• Stable engine mounting – limiting unwanted movement of the powertrain during acceleration, engine braking, and gear changes.
• Better cooperation with engine mounts – a correctly selected bracket allows the mounts to effectively dampen vibrations, which impacts ride comfort and interior acoustics.
• Protection of other components – reducing stress on hoses, connectors, and engine accessories through proper force management.
• Maintaining factory handling characteristics – preserving the powertrain geometry designed by the manufacturer.

Condition, origin, and service application

The item comes from disassembly and is offered as a used original component, which allows for economical repair while maintaining factory specifications. It is suitable both for replacing a damaged bracket after a collision or mechanical failure, and for comprehensive service of the engine area when mounts or other mounting elements are being replaced in parallel.

Thanks to the preservation of the original geometry, the bracket makes it easier for the mechanic to install and correctly align the powertrain without the need for additional modifications or fitting non-original solutions.

Integration with the diesel system and additional materials

The design for the diesel unit ensures appropriate durability against torsional vibrations characteristic of diesel engines and loads resulting from high torque. If you are planning broader work on a diesel powertrain, it is worth checking out materials regarding other engines of this brand – a good point of reference is the article The second life of the Mercedes OM642 engine – how injectors and turbochargers restore the power of the 3.0 V6 CDI, which discusses the approach to refreshing Mercedes diesel units and can help in planning comprehensive service.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional brackets, supports, or mounts that work with the engine mounts, check the available parts in the Mercedes Engine mounts category.