Mercedes-Benz W164 W204 OM642 Diesel Fuel Injection Nozzle Bracket + Bolts Set

Mercedes-Benz W164 W204 OM642 Diesel Fuel Injection Nozzle Bracket + Bolts Set is an assembly kit designed for OM642 diesel engines used in popular Mercedes W164 and W204 class models. The set includes the fuel injection nozzle bracket along with matching bolts, facilitating precise installation and maintenance of the fuel injection system. It is a practical solution for workshops and users who want to perform work on the injectors in their Mercedes diesel engine in a technically correct and safe manner.

Specifications and technical data

• SKU: A6420160038-2
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420160038
• Substitutable numbers: A6420160038, A 642 016 00 38, EM
• Fuel type: Diesel
• Category: Other Interior Parts & Accessories

Purpose and function of the fuel injection nozzle bracket

The fuel injection nozzle bracket in the OM642 engine is responsible for the stable, axial clamping of the injector to the cylinder head seat, which is crucial for the tightness of the combustion chamber and proper fuel atomization. In Diesel units, the precision of injector positioning directly affects engine refinement, performance, and exhaust emissions. Using the correct bracket with the appropriate set of bolts minimizes the risk of leaks, blow-by, and damage to the injector seats.

Kit completeness and installation benefits

The presented set includes both the bracket and mounting bolts, allowing for service work to be carried out in one stage, without the need to source additional components from other suppliers. Thanks to this, you:

• ensure the proper clamping force of the injector to the seat,
• reduce the risk of damaging the threads in the cylinder head due to improper bolts,
• maintain structural consistency with the factory Mercedes solution.

A set configured in this way is particularly useful when replacing injectors, overhauling the engine, or repairing the effects of leaks in the area of the injector seats.

Application in the OM642 engine in W164 and W204 models

The OM642 engine is an advanced diesel unit used in many Mercedes models, including the W164 and W204 series. In these types of designs, the fuel injection system operates under high pressure, which is why stable injector mounting is important for both durability and the safe operation of the unit. The bracket with a dedicated bolt set allows for maintaining factory installation parameters, which is essential for professional repairs and diagnostics.

Product characteristics and condition

The offered fuel injection nozzle bracket with a bolt set is an item from the Other category, meaning it is a specialized component complementing the fuel injection system in a diesel engine. The product is used, which in workshop practice often represents a favorable compromise between cost and the ability to use an original design solution. For many Mercedes users, this means access to parts with factory geometry and fitment while maintaining a reasonable repair budget.

Technical support and knowledge development

When working with advanced diesel units, it is worth expanding your knowledge about the design differences between individual engine series and models. A good reference point for comparing solutions used in sports variants versus standard versions can be found in our blog article – Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the impact of engine design and accessories on performance and operating characteristics.

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 brackets, mounts, or small mounting parts, check out the available parts in the Other Mercedes category.