Engine Mount Mercedes W212 Diesel OM651 Right O/S Support Holder A2122401917

The Right Engine Mount for Mercedes W212 Diesel OM651 is responsible for the stable support of the engine unit on the passenger side. A properly selected mount reduces vibrations, improves the refinement of the diesel engine, and contributes to driving comfort. This item, from the Engine Mounts category, is designed for Mercedes cars with the OM651 diesel engine and is installed on the right side of the vehicle.

Specifications and technical data

• SKU: A2122401917
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2122401917
• Substitutable numbers: A2122401917, A 212 240 19 17, KZ
• Location on the vehicle: Right
• Fuel type: Diesel
• Category: Engine Mounts

Function and Application of the Right Engine Mount

The right engine mount in the Mercedes W212 with the OM651 unit is responsible for stably holding the engine relative to the body and for damping vibrations transmitted to the chassis. For diesel engines, which generate higher vibrations than gasoline units, the correct selection and condition of the mount are crucial for the vehicle's usability comfort.

This component works in conjunction with other drivetrain mounts, ensuring:

• controlled deflection during acceleration and engine braking,
• reduction of noise and vibrations from the diesel unit,
• stable positioning of the drivetrain along the vehicle's axis.

Why Choose an Original Right-Side Mount

The original right engine mount for Mercedes has been specifically designed for the loads and operating characteristics of the OM651 engine. This ensures it provides:

• precise fit to factory mounting points on the body and engine,
• maintenance of the correct drivetrain geometry,
• compatibility with accessories specific to diesel versions.

Using parts that comply with the original specification is particularly important for modern diesel units, where improper support can affect the operation of hoses, electrical harnesses, or the exhaust system.

Vehicle Placement and Fuel Type

The mount described is intended for installation on the right side of the vehicle, which is the passenger side in left-hand drive cars. This is important for part selection, as the left and right engine mounts may differ in design.

The component is designed to work with a diesel engine, meaning its characteristics take into account the specific vibrations and loads generated by the OM651 diesel unit. Proper matching to the fuel type translates to more stable drive operation and reduced wear on adjacent components.

Condition of Used Parts and Installation Aspects

The engine mount with bracket is offered as a used part, allowing for economical restoration of the engine mounting system's functionality while maintaining near-factory parameters. A used original part is a solution often chosen by workshops specializing in the Mercedes brand, especially for repairs of vehicles several years old.

Before installation, standard workshop procedures are recommended, including checking other engine mounts and verifying the condition of bolts and bushings. A correctly installed right-side mount helps reduce unwanted cabin vibrations and improves the perceived refinement of the diesel unit.

How to Smartly Buy Used Engine Mounts

When choosing a used engine mount for a Mercedes, it's worth paying attention to the part's origin, compatibility with the engine version, and vehicle placement. Used original parts often represent a compromise between cost and quality, allowing you to keep the car in good technical condition without excessive budget strain.

If you want to better understand how to optimize service costs while maintaining high-quality repairs, an article describing strategies for selecting used components may be helpful – read the guide on saving on car service using used parts to plan your next repairs consciously.

If you need other parts from the engine mounts category for this brand, for example, for a comprehensive replacement of drivetrain mounts or to match parts to a different body version, check the available parts in the Mercedes Engine Mounts category.

For drivers interested in electronics and control modules in modern premium cars, including vehicles similar to the Mercedes E-Class, an article on multimedia systems and control units could be an interesting addition to your knowledge – find more information in the material on servicing iDrive systems and electronic modules in BMW using dismantled parts.