Bracket Mercedes W212 Diesel OM642 Exhaust Manifold Right Holder O/S A6420903841

The Mercedes W212 OM642 Right Exhaust Manifold Bracket is a precision component from the Brackets, Mounts, and Mounting Parts group, specifically designed for OM642 diesel engines. It is responsible for stable support of the right side of the exhaust system on a diesel engine, which translates to smoother engine operation and reduced unwanted vibrations. This solution is dedicated to users who want to maintain the factory mounting geometry and the reliability characteristic of the Mercedes brand.

Specifications and technical data

• SKU: A6420903841
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420903841
• Substitutable numbers: A6420903841, A 642 090 38 41, A6420903241, A 642 090 32 41
• Location on the vehicle: Right
• Fuel type: Diesel
• Part type: Bracket
• Category: Mounts, Brackets & Hardware

Purpose and Function in the Exhaust System

The right-side exhaust manifold bracket in the OM642 engine is responsible for rigid, controlled mounting of exhaust components in the engine area. A correctly selected and fitted bracket:

• stabilizes the exhaust manifold in the area of the right engine cylinder head,
• limits vibration transfer to other system components,
• supports maintaining seal integrity at high diesel operating temperatures,
• reduces the risk of stress leading to cracks in the manifold or mounting bolts.

Thanks to this, a correctly selected bracket is an important element for any serious intervention in the exhaust system of an OM642 diesel engine.

Compatibility with OM642 Diesel Engine

The presented bracket has been developed with diesel units in mind, so its geometry, mounting points, and operating characteristics are adapted to the typical loads of a diesel engine. This means that:

• it is prepared for higher exhaust gas temperatures compared to gasoline units,
• it accounts for the specific vibrations and torque generated by the OM642,
• it ensures proper guidance and support of the manifold on the right side of the vehicle.

Such adaptation translates into stable exhaust system operation and a reduction in unwanted play and deformation over the long term of use.

Characteristics of a Used Part

The offered bracket is a used part, which allows for maintaining the original assembly specification intended by the manufacturer. A used part of this class is a sensible choice wherever it matters:

• maintaining factory fit to the manifold and engine block,
• compatibility with original mounting points in the body and powertrain,
• favorable cost-to-durability ratio compared to aftermarket replacements of unknown origin.

For many Mercedes owners with OM642 engines, using an original used bracket is a practical way to restore proper exhaust system support without altering the construction.

Application in Service Practice

The right-side exhaust manifold bracket is particularly important for:

• exhaust manifold replacement or refurbishment,
• repairs related to exhaust leaks near the engine,
• eliminating vibrations and knocking sounds coming from the right side of the engine bay,
• comprehensive service of the OM642 unit, e.g., at higher mileages.

Selecting the correct bracket allows the mechanic to maintain the correct exhaust system routing and reduce the risk of repeat interventions shortly after the repair.

Expansion of Offer and Additional Materials

If you are planning a comprehensive engine area repair or upgrade for your Mercedes and need other parts from the same group, such as additional brackets, mounts, or mounting elements, check the available parts in the Mercedes Brackets, Mounts, and Mounting Parts category.

To compare different manufacturers' approaches to tuning and using aftermarket parts, you can read an article describing the characteristics of sporty MINI versions – you will find practical tips on how to consciously use used components there: MINI John Cooper Works – what sets it apart and how to upgrade your MINI?.

Summary

The Mercedes W212 OM642 Right Exhaust Manifold Bracket is a technically adapted mounting element designed for diesel engines, which helps maintain the stability and correct geometry of the exhaust system on the right side of the vehicle. Choosing an original used bracket allows you to preserve the engine's operating culture characteristic of Mercedes and reduce the risk of problems arising from improper manifold support.