Oil Seperator Cover Mercedes W169 W245 OM640 Crankase Breather Case A6400101062

Oil Seperator Cover Mercedes W169 W245 OM640 Crankase Breather Case is an original crankcase ventilation system component designed for OM640 diesel engines in A-Class and B-Class models. It ensures stable oil vapor routing and separation, which promotes smooth engine operation and reduces intake contamination. Thanks to its factory design, the breather cover maintains the correct flow geometry and fitment for the stock system.

Specifications and technical data

• SKU: A6400101062
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6400101062
• Substitutable numbers: A6400101062, A 640 010 10 62
• Category: Other Engine Parts

Function and role of the breather cover in the OM640 engine

The oil separator breather cover in the OM640 diesel engine is responsible for routing the mixture of gases and oil mist from inside the engine to the intake system, while simultaneously limiting oil loss. A properly selected component:

• stabilizes the flow of gases from the crankcase,
• helps reduce the amount of oil entering the intake,
• supports the cleanliness of the manifold and hoses,
• limits the risk of unstable idle speed.

By maintaining the original channel geometry, the cover works in conjunction with the factory oil separator, which promotes predictable engine performance and facilitates the diagnosis of potential faults.

Compatibility with Mercedes W169 and W245

The presented breather cover for Mercedes is intended for use in A-Class (W169) and B-Class (W245) models with the OM640 diesel engine. Using an original solution allows for maintaining:

• correct mounting points to the engine cover or adjacent components,
• compatibility with the factory breather hose system,
• proper hose routing in the engine bay, without collision with other sub-assemblies.

Such fitment facilitates installation and service, and also reduces the risk of leaks or improper hose positioning in the engine bay.

Characteristics of the used component

The offered part comes from disassembly and has the status of a used original component. In practice, this means maintaining the factory design and material, while offering a favorable price-to-functionality ratio. In the case of breather system components, it is particularly important that:

• the cover body is not deformed,
• the mounting points retain their integrity,
• the contact surfaces allow for a tight connection with adjacent components.

Choosing such a component is a reasonable solution when servicing OM640 units, when you want to maintain the original specification without the need to invest in a new sub-assembly.

Benefits of using an original breather cover

Using a factory breather cover in the OM640 diesel engine in W169 and W245 models allows for maintaining the consistency of the entire ventilation system. Key advantages include:

• secure fitment for the OM640 unit – no need for modifications or adaptations,
• preservation of the gas flow path intended by the manufacturer,
• easier inspection of the breather system condition during maintenance,
• reduction of the risk of improper engine operation resulting from leaks or poor hose routing.

For workshops and private users, this means a more predictable repair result and the ability to maintain engine performance parameters at a level close to factory specifications.

Service expansion and related content

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

When planning broader modifications or comparing technical solutions from different manufacturers, it is worth familiarizing yourself with the analysis of sports engine designs – the article Audi RS vs other models – what is hidden under the hood and chassis? may be helpful, as it discusses the differences in the construction of engines, braking systems, and chassis.