Mercedes W212 OM642 Engine Timing Belt Mounting Bracket Holder A6420100340

Mercedes W212 OM642 Engine Timing Belt Mounting Bracket Holder is a precision mounting component designed for diesel units, which stabilizes the belt routing within the timing drive. Thanks to its factory geometry and fitment to the OM642 engine design, it ensures reliable support for accessories and predictable system behavior during long-term operation. Using a pre-owned component of this type allows for an economical, yet technically correct repair of the timing zone in a W212 generation Mercedes E-Class.

Specifications and technical data

• SKU: A6420100340
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420100340
• Substitutable numbers: A6420100340, A 642 010 03 40
• Fuel type: Diesel
• Category: Engine Mounts

Purpose and function in the timing system

The timing belt holder in the OM642 diesel engine is responsible for the stable guidance of timing drive components and maintaining their proper operating axis. In practice, this means:

• reducing unwanted vibrations in the timing drive area,
• maintaining the correct position of cooperating pulleys and rollers,
• reducing the risk of premature wear of the belt and associated components,
• better repeatability of the engine's operation across the entire load range.

In diesel-powered engines, the mechanical stability of accessories is of particular importance due to higher loads and operating characteristics, which is why the correct timing belt holder is a vital element of the entire system.

Compatibility with Mercedes W212 and the OM642 engine

The presented holder has been designed for use in the Mercedes W212 model equipped with the OM642 unit, which translates into compliance with the factory engine bay architecture. Proper fitment to the mounting points on the engine block and accessories allows for maintaining:

• correct timing belt routing geometry,
• consistency with the original mounting system,
• the ability to install without interfering with the engine structure.

As a result, the holder is a particularly beneficial solution for repairs where compliance with the manufacturer's factory specifications and maintaining the engine's serial operating parameters is crucial.

Characteristics of the used component

The offered timing belt holder comes from the Engine Mounts category, which in practice means it is a component related to the support and stabilization of the powertrain and its accessories. As a used part, it retains its original construction and material, while allowing for reduced service costs while maintaining high compatibility with the factory solution.

Choosing a used component of this type is particularly beneficial in situations where the priority is to keep the vehicle in full working order on a rational budget, without sacrificing proper fitment for the specific model and engine version.

Importance of selection by part numbers and parameters

For components mounted in the timing zone, it is essential to match them by catalog numbers and technical parameters, such as the engine unit type or fuel type. This holder is designed for a diesel engine, which facilitates proper selection in Mercedes vehicles from the OM642 family. In practice, this means:

• minimizing the risk of incorrect installation,
• preserving factory mounting points,
• consistency with other timing system components.

Thanks to this, the part can be used both for standard replacement and for more extensive service work within the engine unit.

Mercedes engine mounts – expansion and modernization

If you are planning a comprehensive repair or modernization of the engine area in your Mercedes and need other elements from the same group, such as additional holders, brackets, or engine mounting components, check the available parts in the Mercedes engine mounts category.

Technical support and knowledge about diesel engine systems

When working with diesel units, it is worth considering not only mechanical elements but also components responsible for exhaust emissions and operating smoothness. To expand your knowledge about key systems in diesel engines, such as exhaust gas recirculation, the article EGR: what it is and why it is worth considering used EGR valves will be helpful, as it discusses the operating principles and practical aspects of selecting used components.