Engine Support Mercedes W204 W205 W212 C218 Mount Holder Right O/S A2742234304

Engine Support Mercedes W204 W205 W212 C218 Mount Holder Right O/S is a component from the Engine mounts group, designed to provide stable support for the power unit on the right side of the vehicle. A properly selected mount reduces vibrations transmitted to the chassis, improves engine operation smoothness, and contributes to driving comfort and the durability of adjacent components.

Specifications and technical data

• SKU: A2742234304
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2742234304
• Substitutable numbers: A2742234304, A 274 223 43 04
• Location on the vehicle: Right
• Category: Engine Mounts

Purpose and function in the drivetrain

The presented engine mount holder is designed for Mercedes C-Class and E-Class models of the W204, W205, W212, and C218 generations, located on the right side of the engine bay. As a load-bearing element from the Engine mounts group, it is responsible for transferring loads from the power unit to the chassis while damping vibrations and limiting unwanted movement of the drivetrain during acceleration, engine braking, or gear changes.

A properly selected mount is particularly important in vehicles with higher torque, where improper support operation can lead to accelerated wear of joints, half-shafts, exhaust components, and engine accessories. Using an original holder from this group allows for maintaining the factory performance characteristics of the drivetrain.

Benefits of using the original holder

Using a dedicated engine mount holder on the right side in Mercedes W204, W205, W212, and C218 models provides a number of practical benefits:

• Stable support for the power unit – limiting engine tilt and displacement in the longitudinal and transverse axes.
• Vibration reduction – improvement of acoustic comfort in the interior and reduced stress on body components.
• Better drivetrain performance – more predictable vehicle behavior during starting, gear changes, and sudden maneuvers.
• Protection of adjacent components – reduction of stress on hoses, connectors, and engine accessory components.

An element from this group, properly selected for a specific body and engine version, also facilitates service and diagnostics because it maintains the factory mounting points and geometry intended by the manufacturer.

Installation characteristics and fitment

The right-side engine mount holder is structurally prepared to work with the factory mounting points on the chassis and the engine block. As a result, installation is straightforward, without the need for vehicle structure modifications. Maintaining the original mounting geometry translates into the correct alignment of the power unit relative to the transmission, half-shafts, and exhaust system.

The product comes from the Mercedes brand, which in practice means compliance with factory dimensional and material tolerances. For the user, this translates into predictable vehicle behavior after replacement and the possibility of trouble-free servicing in the future.

Component condition and practical application

The offered holder belongs to the group of used Engine mounts, which allows for economical repair while maintaining the original design. This type of solution is often chosen for comprehensive service work in the engine area when other power unit or accessory support elements are also being replaced.

In the case of symptoms such as excessive vibrations at idle, noticeable jerking when starting, or disturbing noises from the engine bay area, checking the condition of the right-side engine mounts and holders is one of the basic diagnostic steps. Replacing a worn element with a functional holder allows for restoring the original smoothness of the drivetrain.

Related components and technical knowledge

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 mounts, brackets, or power unit supports, check the available parts in the Mercedes Engine mounts category.

When working in the drivetrain area, it is also worth paying attention to systems affecting exhaust emissions and engine smoothness. You can find more about the role of the exhaust gas recirculation system and the validity of using used components in the article EGR: what it is and why it is worth considering used EGR valves.

If you are interested in a broader approach to refreshing older generations of Mercedes using proven used components, you will find practical tips on selection and upgrade scenarios in the guide The second life of a youngtimer – how used car parts rejuvenate cars from the 1998–2012 model years.