Mercedes W211 W212 W251 Turbocharger Housing Cover OM642 V6 Diesel A6420908680

The Mercedes W211 W212 W251 OM642 V6 Turbocharger Housing Cover is an original turbocharger and parts component designed for the OM642 V6 diesel engines. This used turbocharger housing cover allows for technical, factory-correct repair of the turbocharger system in Mercedes E-Class, CLS-Class, and R-Class vehicles.

Specifications and technical data

• SKU: A6420908680-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420908680
• Substitutable numbers: A6420908680, A 642 090 86 80, A6420908580, A 642 090 85 80
• Fuel type: Diesel
• Category: Turbos & Parts

Purpose and function of the turbocharger housing cover

The OM642 V6 turbocharger housing cover plays a key role in the proper routing of charge air and the stable mounting of turbocharger components. In Mercedes-Benz OM642 diesel engines, it ensures the tightness of the cold side of the system, which translates into correct boost pressure and predictable engine performance.

Using the original cover from the same design family allows you to maintain the factory air flow geometry, reduce pressure drops and minimize the risk of leaks that could cause power loss, smoke or errors in the engine control unit.

Compatibility with OM642 V6 Diesel engine

The component is designed to work with the OM642 V6 six-cylinder diesel engine used in the Mercedes W211, W212, and W251 models. The cover's design is tailored to the architecture of the intake system and turbocharger in these engines, allowing for installation without interfering with the factory solutions.

By maintaining the original specifications, the cover works with factory sensors, hoses, and mountings, simplifying servicing and reducing vehicle downtime. This is especially important in modern diesel engines, where the turbocharging system is closely linked to the engine management system and exhaust gas aftertreatment system.

Characteristics of the element used

The turbocharger housing cover is a used part, meaning it comes from a disassembly but retains full structural functionality. These types of components are a popular choice for diesel engine repairs because:

• they allow for a reduction in repair costs compared to new parts, while maintaining the original manufacturer's specifications,
• ensure factory fitment to the turbocharger and accessories of the OM642 engine,
• make it easier to maintain the consistency of the entire charging system without the need to use substitutes with uncertain parameters.

Used condition is a good choice for servicing vehicles from the youngtimer segment and intensively used diesel cars, where a reasonable balance between cost and technical compliance is important.

Benefits of using the original turbocharger cover

The use of the original turbocharger housing cover in the OM642 V6 engine brings a number of practical service and operational benefits:

• Stable operation of the supercharging system – maintaining the factory tightness and air flow geometry promotes even build-up of supercharging pressure.
• Better cooperation with the engine electronics – correct pressure and air flow values help the controller maintain optimal combustion parameters in the diesel engine.
• Reduced risk of additional faults – the fitted element reduces the risk of stress, leaks and incorrect assembly of the intake pipes.
• Consistency with other turbocharger components – the original design is compatible with the body, mountings and accessories, which facilitates workshop work.

Support in the selection and modernization of youngtimers

The turbocharger housing cover for Mercedes-Benz OM642 V6 engines is often used in the repair and refurbishment of older cars, which are increasingly being targeted at the youngtimer segment. The correct selection of the component used is crucial for the durability of the entire turbocharging system and driving comfort.

If you are planning a more extensive modernisation or want to better understand how used components can help in the refurbishment of older Mercedes-Benzes, it is worth reading the article The Second Life of a Youngtimer – How Used Car Parts Rejuvenate Cars from 1998–2012 , which describes practical scenarios for using dismantled parts in BMW, Mercedes, Audi, MINI and VW.

How to choose the right turbocharger cover by OEM number

When selecting this turbocharger housing cover, it's crucial to compare the OEM and interchangeable part numbers with your vehicle's documentation or service system data. This ensures compatibility with your specific OM642 engine version and hardware configuration.

If you want to organize the process of selecting parts based on the OEM number or reference numbers, a practical guide on how to choose the right car part by VIN and OEM number will be helpful, which describes step by step how to verify compatibility and a list of questions to ask the seller.

If you need to use a different configuration of supercharging components in vehicles of this brand, also check out the turbochargers and parts for Mercedes available in our assortment, which will make it easier to complete the entire system based on consistent, original components.