Visual condition of the part

The product shows signs of use visible in the photos.

Visual condition of the part

The product has traces of use visible in the photos.

The Mercedes W164 W211 OM642 Turbocharger Lower Cover is an original turbocharger and parts component designed for use on Mercedes OM642 engine units. This cover provides a functional solution for users seeking a factory-like fit and durable protection for turbocharger components.

Specifications and technical data

• SKU: A6420901480-3
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420901480
• Substitutable numbers: A6420901480, A 642 090 14 80
• Category: Turbos & Parts

Purpose and function of the lower turbocharger cover

The lower turbocharger cover in Mercedes W164 and W211 models with the OM642 engine is responsible for protecting the turbine housing and adjacent components from contamination, moisture, and thermal impact. A properly selected cover helps reduce the impact of road dirt, salt, and small stones on the turbocharger area, helping to maintain stable operating conditions for the system.

Using the original cover in the turbine system allows the factory air and heat flow geometry in the engine compartment to be maintained, which is important both for the durability of the turbocharger and for serviceability.

Construction and fitment for Mercedes W164 / W211 OM642

The turbocharger cover was designed to fit the OM642 drivetrain in W164 and W211 bodies. Its contoured surface and mounting points allow for installation in the factory locations without the need for modifications or aftermarket components.

The OEM solution provides:

• consistency with the original design of the engine compartment,
• maintaining the protective zones around the turbine provided by the manufacturer,
• easier service access during disassembly and reassembly.

Used condition and operational aspects

This turbocharger lower cover is a used item, meaning it may show signs of normal wear and tear, but is still intended for continued use as intended. For many users, this represents a favorable compromise between purchase price and maintaining the original manufacturer's specifications.

Choosing a used OEM component from the turbocharger and parts category is particularly attractive in situations where the priority is:

• maintaining the factory fit of the drivetrain,
• reducing the costs of repairing or reconstructing covers in the turbine zone,
• maintaining the original design without using unreliable substitutes.

Application in turbocharging system

On OM642 engines, the underbody cover plays a vital role in protecting the turbocharger and surrounding components, such as hoses, mounts, and exhaust system components. A properly installed cover helps reduce:

• direct impact of pollutants on the turbine body,
• local overheating of sensitive components near the exhaust system,
• risk of mechanical damage resulting from impacts from small road elements.

This allows the turbocharging system to operate in more stable conditions, which helps maintain engine operating parameters close to factory levels.

Benefits of using the original Mercedes cover

By choosing the lower turbocharger cover for Mercedes W164 / W211 OM642 from the range of original parts, you gain:

• factory fit to the vehicle structure,
• consistency with other components of the turbocharging system,
• solution in line with the vehicle manufacturer's assumptions.

If you are looking for other turbochargers and parts for Mercedes, check out our dedicated category: turbochargers and parts for Mercedes .

Practical operating tips and additional materials

When replacing components within the turbocharger system, it's worth paying attention to the general condition of the covers, mounts, and adjacent components to avoid recurring faults. It's also good practice to schedule maintenance based on actual wear and tear, not just mileage.

If you want to better plan your car's service and find out which parts are replaced most often, check out the guide: TOP 10 most frequently replaced parts in your car .