Oil Separator Mercedes W213 M270 M274 Petrol Engine Breather Vent A2700109703

Oil Separator Mercedes W213 M270 M274 Petrol Engine Breather Vent is an original crankcase ventilation system component designed for M270 and M274 series petrol engines in E-Class W213 models. Thanks to its precise construction and adherence to factory standards, it ensures stable engine operation and helps maintain proper combustion parameters.

Specifications and technical data

• SKU: A2700109703
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2700109703
• Substitutable numbers: A2700109703, A 270 010 97 03
• Fuel type: Petrol
• Category: Hoses, Lines & Pipes

Function and application of the oil separator

The breather – oil separator in this model is responsible for the controlled discharge of gases from the crankcase and their return to the intake system. A properly functioning component limits the ingress of oil mist into the intake, which promotes a cleaner intake system and stable operation of the throttle valve and mixture control components.

In M270 and M274 petrol engines, correct operation of the breather system is essential for:

• maintaining proper crankcase pressure,
• reducing engine oil consumption,
• limiting deposits in the intake manifold and on the valves,
• stable idling and operation under load.

Construction and integration with the hose system

This component belongs to the Lines, hoses and pipes category, working in conjunction with the vacuum system and the lines that discharge gases from the engine. The design is prepared for installation at factory mounting points, which facilitates maintenance and allows for maintaining the original routing of lines in the engine bay.

Properly designed flow channels in the separator support effective separation of oil from gases, and the matched connection ports help avoid leaks that could cause mixture errors or power loss.

Compatibility with petrol engines

The presented breather is intended for units powered by petrol, in accordance with the fuel type parameter. As a result, the design is adapted to the operating characteristics of M270 and M274 engines, including the typical vacuum values and temperatures occurring in these units.

Selecting a part consistent with the OEM designation is crucial for maintaining the correct operation of the ventilation system. In case of doubts regarding fitment for a specific engine version, it is worth consulting experts and materials regarding part number compatibility and replacements.

Condition and benefits of using an original component

The part is offered as used, which allows for an economical repair while maintaining the manufacturer's original specifications. In practice, this means the ability to restore the proper operation of the breather system without the need to resort to unverified replacements.

Using an original oil separator in an M270/M274 petrol engine can help in:

• limiting blow-by and uncontrolled leaks in the ventilation system,
• reducing the risk of errors related to the air-fuel mixture,
• maintaining smooth engine operation across the full load range.

How to choose the right breather for your Mercedes

When selecting a breather for a Mercedes E-Class W213 with a petrol engine, it is worth paying attention to compliance with the engine unit designation and factory parameters. Both OEM data and information about interchangeable numbers assigned to a given model can be helpful.

If you are planning comprehensive maintenance of the ventilation system or replacing related lines, also check other items available in the Lines, hoses and pipes category to complete all necessary components in one place.

To better match a used part to a specific engine version and avoid mistakes, it is worth using practical expert tips – the article on professional selection of used car parts and OEM compatibility verification, which discusses step-by-step how to minimize the risk of an incorrect purchase, will be helpful.