Mercedes W164 W204 W212 OM642 Enginge Breather Hose Cap A6420100131

The Mercedes W164 W204 W212 OM642 Crankcase Breather Hose Connector is a component of the Crankcase Breather Hose System designed for the OM642 engine units used in the popular Mercedes W164, W204, and W212 models. This part is part of the turbocharger and parts category, therefore it is important for the proper operation of the supercharging system and stable engine parameters.

Specifications and technical data

• SKU: A6420100131
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420100131
• Substitutable numbers: A6420100131, A 642 010 01 31
• Category: Turbos & Parts

Purpose and function of the pneumothorax duct connector

The crankcase ventilation hose connector is responsible for ensuring a tight and stable connection between the crankcase ventilation hose and the remaining intake system components. In the OM642 engine, proper operation of the crankcase ventilation hose affects:

• maintaining proper pressure in the crankcase,
• limiting oil blow-by into the intake system,
• stable operation of the turbocharger and cleaner intake,
• reducing the risk of oil leaks in the area of pneumothorax ducts.

A worn or leaking connector can cause engine malfunctions, so its proper condition is important when servicing OM642 units.

Compatibility with Mercedes W164, W204, W212 with OM642 engine

This OM642 pneumatic hose connector is designed for use in Mercedes W164, W204, and W212 vehicles equipped with this engine. This makes it a suitable choice for:

• repairs of the pneumatic system in OM642 diesel engines,
• service accompanying work on the turbocharger and intake accessories,
• restoring the factory tightness of the ventilation system.

Selecting a component from the same family as original Mercedes components allows you to maintain the structural integrity of the system and reduce the risk of fit problems.

Product characteristics and condition

The manifold is classified as a turbocharger and parts, emphasizing its connection to the intake and supercharger areas. The component is offered as a used part, meaning it has been disassembled and may show signs of wear typical of this type of component.

In practice, such an element is often chosen as an economical solution when servicing the breather system, especially when the priority is to maintain the original geometry and compatibility with the factory engine accessories.

Benefits of using a pneumatic hose connector in a turbocharger system

A functioning pneumatic hose connector in the OM642 engine supports the proper operation of the turbocharger and the entire intake system. Installing a properly selected component helps:

• limit uncontrolled air intake that could disturb sensor readings and the operation of the engine controller,
• reduce oil contamination of the intake, which is important for the service life of the turbocharger and associated components,
• maintain stable operating parameters of the OM642 unit under typical operating conditions.

For users who service their turbocharging system comprehensively, replacing worn components of the pneumatic valve – including the manifold – is a natural step in working on the turbocharger and its accessories.

Professional application and substantive support

When planning repairs and upgrades to turbocharger and pneumatic systems, it's also worth considering other components related to the turbocharger in a given brand. If you're looking for other turbocharger components for a Mercedes, check out our dedicated category: turbochargers and parts for Mercedes .

Those interested in a broader approach to the use of used components—from turbochargers to accessories—can explore the practical tips described in the blog article: Audi with Second-Hand Parts—Tuning and Repairs Without Losing Quality . The article demonstrates how to wisely use used components in modern cars, which can also be applied to servicing other brands.