Mercedes W212 Automatic Gearbox Oil Sump Lower Pan 722.6 W5A330 A1402700812

Mercedes W212 Automatic Gearbox Oil Sump Lower Pan 722.6 W5A330 is a precisely engineered drivetrain component, dedicated to automatic transmissions in diesel-powered vehicles. This used, original oil sump ensures stable operating conditions for the transmission fluid, supporting proper lubrication and cooling of the automatic gearbox. Choosing a factory-original component is a sensible solution for drivers who expect predictable installation and the maintenance of factory transmission performance parameters.

Specifications and technical data

• SKU: A1402700812
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1402700812
• Substitutable numbers: A1402700812, A 140 270 08 12
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Oil Sumps

Purpose and function in the drivetrain

The transmission oil sump in Mercedes W212 models with an automatic gearbox plays a key role in the transmission fluid circuit. It is responsible for:

• maintaining the correct amount of oil in the system,
• ensuring stable oil suction by the transmission pump,
• cooperating with the oil filter and the transmission cooling system,
• reducing turbulence and aeration of the oil during automatic transmission operation.

Thanks to its proper geometry and fitment to the specific transmission design, the automatic transmission oil sump helps maintain consistent oil pressure, which translates into smooth and predictable gear shifts.

Compatibility with automatic transmission and diesel engine

The presented component is intended for vehicles with an automatic transmission working with diesel units. This means that the sump design takes into account the specific operating conditions of the transmission in diesel cars, such as higher torque and characteristic thermal loads.

Selecting an oil sump compatible with the fuel type and transmission type is important for:

• maintaining the proper transmission fluid temperature,
• stable operation of the lubrication system under full load,
• preserving factory gear shifting characteristics.

Using a dedicated component instead of random replacements reduces the risk of leaks, incorrect sensor positioning, or problems with accessory installation.

Benefits of using an original oil sump

By choosing an original Mercedes automatic transmission oil sump, you gain a component designed exactly for a specific transmission. This translates into a number of practical benefits:

• factory fitment to the transmission housing and mounting elements,
• predictable positioning of ports, service holes, and accessory mounting points,
• preservation of the original internal sump geometry, supporting proper oil circulation,
• easier installation without the need for modifications or adjustments.

For workshops and users, this means shorter service time, lower risk of leaks, and greater confidence that the transmission will operate under conditions close to factory specifications.

Application in service and transmission system upgrades

Mercedes W212 Automatic Gearbox Oil Sump Lower Pan 722.6 W5A330 will prove useful both during standard maintenance and more extensive transmission work, such as:

• removing leaks and transmission fluid seepage,
• rebuilding or replacing the automatic transmission,
• inspecting the lubrication system after transmission overheating,
• restoring factory configuration after previous, unsuccessful modifications.

A used, original component can be a reasonable choice in situations where the cost-to-functionality ratio is important, while maintaining compliance with factory design specifications.

Service expansion – Mercedes oil sumps

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and need other elements from the same group, such as additional sumps, covers, or components related to the transmission oil circuit, check out the available parts in the Mercedes oil sumps category.

How to avoid mistakes when selecting a used part

To select the correct transmission oil sump for a specific vehicle version, it is worth paying attention to compatibility with the transmission type, fuel type, and manufacturer markings. It is helpful to compare the shape, arrangement of mounting holes, and ports with the element currently installed in the car. Additional support can be found in the vehicle manufacturer's guidelines and service documentation.

If you want to streamline the parts selection process and reduce the risk of a wrong purchase, use the practical expert tips described in the article No more bad purchases! How to professionally select used car parts while saving time and nerves. This will make it easier for you to verify the component's compatibility with your car and avoid unnecessary costs.