Mercedes-Benz A M W169 ML W164 OM642 Fuel Injection Nozzle Bracket A6420160038

Mercedes-Benz A M W169 ML W164 OM642 Fuel Injection Nozzle Bracket is an original mounting component designed for the fuel injection system of OM642 and OM640 engines in Mercedes vehicles. This precision-engineered bracket ensures stable seating of the injector in the cylinder head, which promotes smooth engine operation and reduces the risk of leaks. By maintaining the factory mounting geometry, it provides a safe service solution when replacing or swapping injectors.

Specifications and technical data

• SKU: A6420160038
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420160038
• Substitutable numbers: A6420160038, A 642 016 00 38, EM
• Category: Other Interior Parts & Accessories

Purpose and function of the fuel injection nozzle bracket

The fuel injection nozzle bracket in OM642 and OM640 engines is responsible for firmly pressing the injector into its seat, maintaining the correct position of the nozzle tip in the combustion chamber, and transferring the forces resulting from engine operation. A correctly selected mounting component reduces the risk of:

• loss of seal between the injector and the cylinder head,
• carbon deposit buildup around the seat,
• micro-movements of the injector affecting fuel spray quality.

Using a bracket compatible with the OM642 / OM640 engine design allows for maintaining fuel injection system performance parameters in accordance with the manufacturer's specifications.

Benefits of using an original Mercedes bracket

In the case of Mercedes diesel engines, it is crucial to maintain the correct position of the injector relative to the combustion chamber. Using a bracket dedicated to specific engines brings measurable benefits:

• Precise fit to the cylinder head – the factory mounting geometry is preserved, which facilitates installation and removal during service work.
• Reduction of stress on the injector body – properly distributed clamping forces reduce the risk of mechanical damage.
• Better assembly repeatability – it is easier to maintain the correct pressure and position during subsequent injector removals.

For workshops specializing in Mercedes service, such a bracket is a practical service component that allows for restoring proper fuel injection system operating conditions after cylinder head repairs or injector replacements.

Product characteristics and service application

The presented fuel injection nozzle bracket is a component removed from a vehicle, which allows for its reuse during maintenance repairs. This type of part is particularly useful in situations where:

• the original bracket has suffered mechanical damage (e.g., cracking, deformation),
• the mounting thread required intervention and the entire component needs replacement,
• work is being carried out on the fuel injection system after injector regeneration.

Selecting a bracket dedicated to OM642 / OM640 engines allows for maintaining the structural integrity of the entire system and helps keep engine performance parameters at a stable level.

Integration with other fuel injection system components

The bracket works directly with the injector, the seat in the cylinder head, and mounting elements (bolts, pressure washers – depending on the specific engine configuration). In workshop practice, it is significant for:

• setting the correct injector seating depth,
• ensuring even pressure across the entire contact surface,
• minimizing the risk of exhaust gas leaks in the seat area.

Thanks to the original design, the bracket allows for repeatable installation in accordance with service procedures used in Mercedes vehicles with OM642 and OM640 engines.

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

Technical support and knowledge about powertrains

When working with fuel injection systems and powertrains, it is worth using reliable sources of knowledge regarding structural differences between individual engine series and model versions. To compare solutions used in sports variants versus standard versions, you can refer to material describing the construction of powertrains, brakes, and chassis in luxury class cars – you will find it in the article Audi RS vs other models – what is hidden under the hood and chassis?.

Summary

Mercedes-Benz A M W169 ML W164 OM642 Fuel Injection Nozzle Bracket is a practical mounting component designed for servicing the fuel injection system in Mercedes diesel engines. A properly selected bracket helps maintain the correct injector position, supports the seal with the cylinder head, and facilitates maintaining stable engine performance parameters after repairs or injector replacements.