Mercedes W169 W245 180CDI 200CDI Part Oil Separator Breather A6400101162

Mercedes W169 W245 180CDI 200CDI Part Oil Separator Breather is an original crankcase ventilation system component designed for diesel engines in compact Mercedes A-Class and B-Class models. It is responsible for the controlled discharge of oil vapors from the engine unit, which promotes stable engine operation and reduces intake contamination. Thanks to its factory design, it ensures a proper fit for the installation and compatibility with factory lines and hoses.

Specifications and technical data

• SKU: A6400101162
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400101162
• Substitutable numbers: A6400101162, A 640 010 11 62
• Category: Hoses, Lines & Pipes

Purpose and function of the breather separator

The breather separator in 180CDI and 200CDI engines plays a key role in the crankcase ventilation system. Its task is to separate oil vapors from gases before they return to the intake system, which helps to:

• keep the intake and engine auxiliary components cleaner,
• limit carbon deposit buildup in the manifold,
• stabilize pressure in the crankcase,
• maintain correct engine performance parameters in the long term.

Thanks to a design consistent with factory solutions, the system of lines, hoses, and pipes maintains proper tightness and the correct direction of gas flow.

Construction and fitment to the line system

The separator has been designed to work with the factory Lines, hoses, and pipes system in Mercedes W169 and W245 models with diesel engines. Properly shaped connection ports allow for secure seating on existing lines without the need for installation modifications.

Such a solution allows for maintaining the original geometry of hose routing, which is important for proper vapor discharge and avoiding unwanted kinks or leaks. Factory fitment also facilitates the mechanic's work and shortens assembly time.

Benefits of using an original separator

Choosing an original breather separator for a Mercedes brings measurable operational benefits:

• maintaining engine performance parameters in accordance with manufacturer specifications,
• better cooperation with the factory intake and exhaust gas recirculation system,
• reducing the risk of blow-by and oil leaks in the area of the breather lines,
• easier diagnostics of potential faults related to the ventilation system.

For users planning comprehensive maintenance of the breather system or replacement of related components, a good starting point is to review the entire group of components in the lines, hoses, and pipes for Mercedes category, which will make it easier to select a consistent set of parts.

Characteristics of the used part

The offered separator is an aftermarket component sourced from a dismantled Mercedes vehicle. This type of part allows for an economical repair while maintaining the original design and compliance with factory technical solutions. For many users, this is a reasonable compromise between cost and fitment quality.

Before installation, it is recommended to perform a standard check of the condition of the lines working with the breather and the seals, in order to fully utilize the potential of the ventilation system and avoid the return of typical problems, such as excessive oiling of the intake or unstable idle speed.

Technical support and additional information

When selecting a breather separator for a specific engine version, it is worth verifying compatibility with the part number and engine unit configuration. In case of expanding the repair with other dismantled sub-assemblies, the article on the advantages of used original Mercedes parts, which discusses practical aspects of using aftermarket components in premium class cars, may be helpful.

For users and workshops specializing in Mercedes service, we have also prepared guide materials that help to better plan the maintenance of engine auxiliary systems, including crankcase ventilation, which translates into more predictable and stable vehicle operation.