Oil Pipe Mercedes W207 W212 OM642 Automatic Gearbox Cooling Hose A6421802930

Mercedes W207 W212 Automatic Transmission Oil Line is an original drivetrain component designed for automatic transmissions in Mercedes E-Class and E-Class Coupé models. As part of the Oil Coolers and Lines group, it is responsible for safely routing transmission oil between the gearbox and the cooling system, which is crucial for the stable operation of the automatic transmission. Choosing an original oil line helps maintain the gearbox's factory performance parameters and reduces the risk of overheating.

Specifications and technical data

• SKU: A6421802930
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421802930
• Substitutable numbers: A6421802930, A 642 180 29 30, KD
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Purpose and Function in the Automatic Transmission System

The automatic transmission oil line in a Mercedes is responsible for transporting transmission oil between the gearbox and the cooling components. A stable flow of the working fluid contributes to:

• maintaining the correct operating temperature of the automatic transmission,
• reducing thermal loads during stop-and-go traffic and at higher speeds,
• minimizing wear on internal gearbox components,
• more predictable gear shifting performance.

For Mercedes W207 and W212 models, using an oil line that is structurally matched to the specific automatic transmission is important for both durability and operational safety.

Benefits of Using an Original Oil Line

An original oil line from the Oil Coolers and Lines group ensures the preservation of the original oil line geometry and compatibility with the mounting points and connectors in the W207/W212 body. In practice, this means:

• secure fit to factory brackets and mounting points,
• correct routing of the line while maintaining required bending radii,
• reduced risk of vibrations and stresses during drivetrain operation,
• easier installation for mechanics due to compliance with the factory system.

For the user, this translates to stable automatic transmission operation and a reduced risk of oil leaks at critical points in the system.

Application in Mercedes W207 and W212 Vehicles

This component has been designed with the specific construction of Mercedes E-Class sedan, estate, and coupé models with automatic transmissions in mind. As a result, the oil line works with the factory transmission oil cooling system, maintaining the parameters specified by the vehicle manufacturer. For workshops, this means the ability to perform repairs or replacements in accordance with service documentation, without the need for alternative solutions with uncertain fitment.

Characteristics of a Used Component

The offered oil line is a used part, sourced from disassembly, which allows for combining original technical specifications with a more favorable purchase price. In many cases, using an original used component is a more predictable solution than installing a cheaper aftermarket alternative of unknown quality. This is particularly important for components operating within the automatic transmission's oil system, where sealing and temperature resistance directly impact the durability of the entire gearbox.

Technical Support and Related Components

If you are planning a comprehensive repair or upgrade of the drivetrain and oil cooling system in your Mercedes and require other components from the same group, such as additional oil lines, connecting sections, or oil feed lines to the cooler, please check the available parts in the Mercedes Oil Coolers and Lines category.

In the context of operation at high temperatures, it is worth considering the impact of thermal load on the entire drivetrain cooling system – you can find more practical tips in the guide Summer Heat vs. Cooling System: Used Coolers and Fans for Guaranteed Savings, which discusses how to properly care for heat-dissipating components.

If you are considering a broader use of original disassembled parts for your car of this brand, the article Used Parts for Mercedes – Original Parts from Disassembly, which describes the advantages of using factory components at a reasonable price, may also be helpful.