Mercedes W212 Gearbox Oil Line Left N/S Oil Cooler Pipe Hose Diesel A6511808430

Mercedes W212 Gearbox Oil Line Left N/S Oil Cooler Pipe Hose Diesel is a specialized drivetrain component designed for use with automatic transmissions in diesel-powered vehicles. The precisely selected geometry of the line ensures stable transmission fluid routing, which promotes smooth automatic transmission operation and consistent gear shifting. This used OEM component is a sensible choice for professional repairs or servicing of the transmission in a W212 generation Mercedes E-Class.

Specifications and technical data

• SKU: A6511808430
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511808430
• Substitutable numbers: A6511808430, A 651 180 84 30, BG
• Location on the vehicle: Left
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Transmission Sensors

Purpose and function of the gearbox oil line

The offered line is responsible for transporting transmission fluid between the components of the automatic transmission system on the left side of the vehicle. Proper flow of the operating medium is crucial for:

• maintaining stable pressure in the transmission's hydraulic system,
• ensuring adequate lubrication of gears and clutches,
• dissipating heat from critical components,
• reducing the risk of slipping and jerking during gear changes.

Thanks to its proper fitment to the Mercedes W212 design, the line interacts with the automatic transmission system in a predictable and consistent manner, which facilitates diagnostics and subsequent operation.

Compatibility with the diesel powertrain

The line has been designed for diesel-powered vehicles, where the automatic transmission operates under higher torque loads. In practice, this means that:

• the design of the line takes into account the operating characteristics of diesel engines,
• the transmission oil system is prepared for long-term operation under high-load conditions,
• consistency with the factory Mercedes powertrain configuration is maintained.

Such compatibility promotes stable automatic transmission operation under typical road conditions, both in city driving and at higher highway speeds.

Vehicle placement and installation aspects

The component is intended for installation on the left side of the vehicle, which is important when planning the routing of lines and guiding them within the engine bay and around the transmission area. Proper placement:

• facilitates maintaining the original oil line routing,
• minimizes the risk of collision with other components,
• reduces the possibility of chafing and mechanical damage during operation.

By using a line dedicated to the specific configuration of the Mercedes W212, the mechanic can perform the replacement more efficiently, and the user gains confidence that the transmission oil system will operate under conditions close to factory specifications.

Characteristics of the used OEM component

The offered line is a used original component, sourced from dismantling. In practice, this means that:

• compliance with the manufacturer's factory specifications is maintained,
• geometry and connections correspond to the solutions used in the Mercedes W212,
• the part can be an economical alternative to a new OEM element.

For workshops and users looking for a reasonable compromise between repair cost and quality, the used gearbox oil line is a practical solution, especially during comprehensive service work on older E-Class models.

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 oil lines, sensors, or transmission control elements, check the available parts in the Mercedes transmission sensors category.

Technical support and knowledge about used components

When selecting used drivetrain components, it is worth using reliable sources of information and proven installation procedures. To better understand the specifics of aftermarket component operation and make informed service decisions, check out the guide: Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors?

Additionally, if you want to reduce vehicle downtime in the workshop and optimize repair costs using original parts from dismantling, the following article may be helpful: Availability of car parts off-the-shelf vs. repair time – how do used OEM parts shorten workshop stays?