Mercedes R172 OM651 Engine Mount Bracket Holder Support Left N/S A1722401017

The Mercedes R172 OM651 Engine Mount Bracket Left Side is an original structural component of the powertrain, designed for stable support of the engine unit on the left side. The precisely designed geometry of the mount ensures proper transfer of loads from the engine to the body, which translates to reduced vibrations, improved driving comfort, and correct operation of the powertrain. As part of the Engine Mounts group, this bracket is a key load-bearing element in the area of the OM651 engine mounting in the R172 body.

Specifications and technical data

• SKU: A1722401017
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1722401017
• Substitutable numbers: A1722401017, A 172 240 10 17, A1722401317, A 172 240 13 17
• Location on the vehicle: Left
• Part type: Engine Mount
• Category: Engine Mounts

Purpose and Function of the Engine Mount

The presented engine mount bracket has been specifically designed for use on the left side of the engine bay in Mercedes vehicles with the OM651 unit in the R172 body. Its purpose is to securely connect the engine to the vehicle's supporting structure, in order to:

• maintain the correct position of the engine unit relative to the body,
• ensure controlled transfer of longitudinal and transverse forces,
• limit undesirable engine movement during acceleration, braking, and driving over uneven surfaces.

Thanks to the appropriately selected stiffness of the mount and its cooperation with other elements from the Engine Mounts group, the powertrain remains stable, and vibrations transmitted to the cabin are significantly reduced.

Benefits of Using an Original Mercedes Mount

Using the original left-side mounting bracket in the OM651 system for the R172 body allows for the preservation of the powertrain's factory operating parameters. The most important advantages include:

• Precise fit to the mounting points on the body and engine, without the need for modifications.
• Appropriate stiffness characteristics, selected by Mercedes engineers for cooperation with other mounting elements.
• Stable guidance of the engine unit, which promotes the correct operation of accessories and cooperating elements (e.g., hoses, connectors, auxiliary mounts).
• Reduced risk of incorrect engine alignment, which could lead to accelerated wear of other components.

Choosing an original mount from the Engine Mounts group is particularly important for diesel engines, such as the OM651, where higher dynamic loads are generated.

Mounting Characteristics and Left-Side Application

The bracket has been designed as a dedicated element for left-side mounting, meaning its geometry, arrangement of mounting holes, and the shape of its contact surface are optimized for a specific position in the engine bay. In practice, this translates to:

• easier positioning during installation,
• correct load transfer into the body structure,
• maintenance of proper mounting clearances relative to other elements in the engine area.

As a result, replacing the bracket with a functional part allows for the restoration of the engine unit's factory operating conditions without interfering with other components.

Condition of the Part and Service Application

The offered bracket belongs to the Engine Mounts group and is a used part, making it an attractive service solution for situations where a quick and economical replacement of a damaged mount is necessary. In practice, it will be suitable for both standard repairs after wear and tear, as well as for vehicle restoration after mechanical damage to the powertrain.

To maximize the potential of used parts, it is worth ensuring their proper operation and maintenance – practical tips can be found in the article How to Extend the Lifespan of Used Car Parts?, which describes, among other things, ways to keep dismantled engine and suspension components in good condition.

Expansion of the Engine Mounting System and Additional Resources

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

When planning larger service work, a guide describing the impact of a wide assortment on repair time may also be helpful – more information can be found in the material No More Weeks of Waiting – How a Wide Assortment in One Warehouse Really Shortens Your Car's Downtime at the Mechanic?, which shows how the availability of appropriate components speeds up restoring the vehicle to full operational status.