Mercedes ML W164 Diesel OM629 Heat Shield Right O/S Exhaust Manifold A6291420020

The Mercedes ML W164 OM629 Right Exhaust Manifold Heat Shield is a precisely fitted exhaust system component designed for OM629 diesel engines. It provides stable thermal protection for the right side of the manifold, supporting the safe operation of the diesel engine and the durability of adjacent components. Thanks to its factory geometry, it is a practical solution for repairs and servicing of the exhaust system in the Mercedes ML W164.

Specifications and technical data

• SKU: A6291420020
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6291420020
• Substitutable numbers: A6291420020, A 629 142 00 20
• Location on the vehicle: Right
• Fuel type: Diesel
• Category: Other Exhaust & Emission Parts

Purpose and Function of the Manifold Shield

The shield described has been specifically designed for the OM629 engine in the Mercedes ML W164 model with a Diesel power supply. Its purpose is to limit heat radiation from the exhaust manifold on the right side, which helps protect nearby hoses, plastic parts, and wiring harnesses from overheating. A correctly selected shield also contributes to thermal stability in the engine bay, promoting smooth engine operation.

Construction and Fit for the Right Side

The exhaust manifold shield is contoured for a specific vehicle placement – the right side, ensuring adequate clearance from the manifold, turbocharger, and other components. The shape of the mounting points and the pressings are adapted to the factory OM629 exhaust system, facilitating installation and ensuring a stable fit without stress. This precise fit minimizes the risk of vibrations, unwanted noise, and contact with other elements in the engine bay.

Application in the OM629 Diesel Engine

In diesel engines like the OM629, exhaust gas temperatures and manifold thermal load are particularly high. A proper shield:

• limits the heating of adjacent components in the engine bay,
• supports the maintenance of stable operating conditions for auxiliary equipment,
• reduces the risk of thermal damage to hoses and connectors,
• helps maintain proper temperature distribution around the exhaust system.

Therefore, replacing a worn or damaged shield with a functional part is an important step in comprehensive exhaust system maintenance for the Mercedes ML W164 with a diesel engine.

Characteristics of a Used Part

The offered exhaust manifold shield is a used part, sourced from disassembly. Such components retain their factory fit and construction, which is particularly important for heat shields operating in close proximity to hot exhaust system parts. Choosing a used component allows for economical repair while maintaining original geometry and compatibility with factory mounting points.

Complementary Parts and Categories

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional heat shields, brackets, or mountings, check the available parts in the Other Mercedes category.

When selecting components for vehicles with increased power and thermal load, it is also worth understanding the structural differences between standard and sport versions – this is discussed in more detail in an article on our blog: Audi RS vs. Other Models – What Lies Under the Hood and Chassis?.

If you are considering whether a new, aftermarket, or used part would be a better choice for your needs, the comparison prepared in the guide may be helpful: Original, Aftermarket, or Used – Which Car Parts Are Most Cost-Effective?.

Summary

The Mercedes ML W164 OM629 Right Exhaust Manifold Heat Shield is a practical choice for exhaust system repairs on diesel engine versions. It provides proper thermal protection for the right side of the manifold, supports the durability of adjacent components, and helps maintain the factory configuration in the engine bay. It is a functional solution for users who expect a technically fitted part at a reasonable service cost.