Mercedes-Benz M ML W163 270 CDI Automatic Gearbox Oil Pipe Line Set A6121800430

Mercedes-Benz M ML W163 270 CDI Automatic Gearbox Oil Pipe Line Set is a specialized kit designed for the cooling and lubrication system of the automatic transmission in diesel engine models. Properly selected pipes ensure stable oil flow, which translates into safe operation of the automatic transmission and reduces the risk of component overheating. This solution is dedicated to users who expect proven, factory-spec geometry and a reliable fit for the Mercedes M-Class installation.

Specifications and technical data

• SKU: A6121800430
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6121800430 A6121800530
• Substitutable numbers: A6121800430, A 612 180 04 30, A6121800530, A 612 180 05 30, EM
• Gearbox type: Automatic
• Category: Automatic Transmission

Purpose and function in the automatic transmission system

The presented oil pipe set operates within the transmission oil circuit, connecting the automatic gearbox to the cooling system components. It is responsible for maintaining the correct flow of the working medium, which is crucial for stable transmission operation, smooth gear shifting, and reducing the wear of internal components.

By maintaining the original geometry and pipe diameters, installation in the Mercedes M/ML W163 270 CDI allows for the restoration of correct lubrication and cooling system parameters without the need for modifications or custom-made parts.

Compatibility and fit for Mercedes

The set has been designed for Mercedes vehicles equipped with an automatic transmission and the 270 CDI unit in the W163 body style. This ensures the retention of factory mounting points, correct pipe routing relative to the frame and body, and compatibility with original connectors. Such a fit facilitates the mechanic's work, reduces service time, and minimizes the risk of leaks resulting from improper installation.

The product belongs to the Automatic transmissions category, which highlights its direct connection to the vehicle's key drivetrain system and facilitates selection within a single product group.

Characteristics of the used pipe set

The item is offered as a used part, which allows for an economical repair of the system while maintaining the manufacturer's original specifications. For many M-Class Mercedes users, this is a reasonable compromise between cost and functionality, especially in the case of older vehicle generations where technical efficiency and proper automatic transmission operation are the priority.

Choosing an original, used oil pipe set is also a way to maintain the integrity of the entire drivetrain without the risks associated with using random replacements of uncertain quality.

Selection support and expert knowledge

Selecting the right components for the transmission system should be based on OEM data and reference numbers to ensure full compatibility with the specific vehicle configuration. In case of doubts regarding the compatibility of oil pipes with a given engine version or automatic transmission, selection procedures based on identification numbers and practical examples described in industry guides can be helpful. An extended discussion on the advantages of using pre-owned drivetrain components, along with a cost analysis and verification procedures, can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths.

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 housings, casings, or additional transmission components, check the available parts in the Mercedes automatic transmissions category.