Mercedes W213 Automatic Transmission Oil Filler Pipe Line A6421800300

Mercedes W213 Automatic Transmission Oil Filler Pipe Line is an original component from the Oil pumps and parts group, designed for the automatic transmission lubrication system in E-Class W213 generation models. It ensures a tight and stable supply of transmission oil to the gearbox, which directly impacts the performance, durability, and operational safety of the drivetrain.

Specifications and technical data

• SKU: A6421800300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6421800300
• Substitutable numbers: A6421800300, A 642 180 03 00
• Gearbox type: Automatic
• Category: Oil Pumps & Parts

Purpose and function in the drivetrain

The automatic transmission oil filler pipe is responsible for providing controlled access to the transmission lubrication system, enabling service oil changes or top-ups. In the designs used in the Mercedes W213, a correctly selected pipe is essential for:

• maintaining the tightness of the automatic transmission lubrication system,
• ensuring the proper ATF oil level during service maintenance,
• reducing the risk of air ingress or oil contamination,
• maintaining stable transmission operation under variable loads.

Thanks to its precise fit for the specific gearbox design, the pipe works with factory mounting points and connectors, which facilitates installation and reduces the risk of leaks after replacement.

Compatibility with the automatic transmission

The component has been designed to work with the automatic transmission used in the Mercedes E-Class W213 generation. This means that the pipe geometry, connection diameters, and routing have been adapted to the factory drivetrain of this model. In practice, this translates into:

• a secure fit to the serial mounting points,
• no need for installation modifications during replacement,
• preservation of the factory operating characteristics of the transmission lubrication system.

Selecting a pipe that matches the transmission design is particularly important in modern automatic gearboxes, where oil pressure and temperature parameters are strictly controlled by the ECU.

Product characteristics and advantages of use

The offered pipe belongs to the Oil pumps and parts group, meaning it is a component directly related to the oil circulation in the drivetrain. Using an original component of this class allows you to:

• maintain compliance with the vehicle manufacturer's factory specifications,
• minimize the risk of oil leaks around the transmission,
• maintain stable transmission operating conditions at high mileages,
• reduce potential repair costs resulting from improper lubrication.

The product is offered in used condition, which is a cost-effective solution for users looking for original components at a reasonable price while maintaining compliance with the factory system design.

Professional service application

The Mercedes W213 automatic transmission oil filler pipe is particularly useful in situations where:

• it is necessary to replace a damaged or leaking pipe,
• an automatic transmission repair or refurbishment is being carried out,
• the vehicle's drivetrain has been serviced and restoring the factory routing of the lines is required.

For workshops specializing in the Mercedes brand, using an original pipe allows for shorter installation times, reduces the number of potential failure points, and ensures predictable transmission behavior after the repair is completed.

Used condition and cost-effectiveness

Choosing a used automatic transmission oil filler pipe can be a reasonable compromise between costs and maintaining the manufacturer's original specifications. In practice, this allows for:

• lowering repair costs compared to a new component,
• maintaining the original geometry and fit of the pipe,
• reducing the risks associated with the uncertain quality of aftermarket replacements.

If you want to better understand the differences between new and used components, practical examples and comparisons can be found in the article New or used? A comparison of costs and quality of car parts, which discusses, among other things, the cost-effectiveness of using original parts from the secondary market.

Related Mercedes lubrication system components

If you are planning a comprehensive repair or upgrade of the transmission lubrication area in your Mercedes and need other elements from the same group, such as oil lines, oil supply elements, or components working with the oil pump, check out the available parts in the Mercedes Oil pumps and parts category.