Mercedes W212 OM651 Oil Engine Sum Suction Pipe Oil Pickup Buffle A6511800051

Mercedes W212 OM651 Oil Engine Sum Suction Pipe Oil Pickup Buffle is a specialized lubrication system component designed for the OM651 engine family in W212 E-Class models powered by gasoline. It is responsible for the proper drainage of oil and gases from the crankcase, which supports stable engine operation and reduces the risk of uncontrolled leaks. This solution allows for a technically correct replacement of a worn component within the oil system.

Specifications and technical data

• SKU: A6511800051
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511800051
• Substitutable numbers: A6511800051, A 651 180 00 51
• Fuel type: Petrol
• Category: Oil Sumps

Purpose and function in the oil system

The breather and oil pickup in the OM651 engine play a key role in oil circulation and the separation of gases from the crankcase. A correctly selected component helps to:

• maintain stable pressure in the lubrication system,
• ensure proper oil intake from the oil pan,
• limit the passage of excess oil into the intake system,
• reduce the risk of oil pressure drops during dynamic driving.

As a result, the gasoline engine lubrication system maintains proper operating parameters, which translates into engine longevity and performance stability.

Compatibility with the OM651 engine in the Mercedes W212

The presented element has been designed for use in Mercedes E-Class W212 generation vehicles equipped with an OM651 family engine powered by gasoline. The design, matched to the factory oil system, allows for installation in place of the original component without the need for modifying other sub-assemblies.

Proper fitment to the engine architecture ensures that the geometry of the oil pickup and breather system works in harmony with the factory oil pan, which is essential for correct oil suction under various engine operating conditions.

Characteristics of the used component

The offered component comes from the Oil pans category and is a used part, which in practice means the possibility of an economical repair of the lubrication system while maintaining the original design. This type of solution is often chosen for the service of vehicles used intensively, where both technical correctness and reasonable maintenance costs are important.

A used component allows for the preservation of the factory oil system concept, which is particularly important in modern gasoline engines where operating tolerances and lubrication requirements are stringent.

Benefits of using an original Mercedes component

Using a component sourced from a Mercedes oil system ensures:

• preservation of factory oil and gas flow characteristics,
• consistency with other lubrication system elements,
• easier diagnostics in the future due to compliance with service documentation,
• predictable engine operation across the full load range.

For users who prioritize technically correct solutions, it is important that the original design of the breather and oil pickup system was developed for the specific requirements of the OM651 unit, which minimizes the risk of oil pressure issues or excessive engine wear.

Related Mercedes oil system components

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 additional pickups, breather elements, or related oil system components, check the available parts in the Mercedes oil pans category.

If you want to expand your knowledge on the safe selection of used sub-assemblies in critical vehicle systems, it is worth reading our guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?, which shows what to look for when purchasing components from the secondary market.