Mercedes-Benz E-Class W211 Air Duct Plastic Pipe Left N/S A1120943582

Mercedes-Benz E-Class W211 Air Duct Plastic Pipe Left N/S is an original intake system component designed for installation on the left side of the vehicle. Thanks to its factory geometry and precise fitment to the body structure, it ensures stable airflow and maintains the correct operating parameters of the power unit. This is a practical solution for users looking for a proven, OEM-compliant air duct for their Mercedes E-Class W211.

Specifications and technical data

• SKU: A1120943582
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1120943582
• Substitutable numbers: A1120943582, A 112 094 35 82, ASZ
• Location on the vehicle: Left
• Category: A/C Expansion Valves

Purpose and function in the intake system

The described plastic air duct has been designed specifically for the Mercedes E-Class W211 generation, intended for installation on the left side of the engine bay. Its task is to precisely guide air within the intake system, while maintaining appropriate rigidity and resistance to the temperatures and vibrations present in the engine compartment.

The factory design of the duct minimizes the risk of leaks, uncontrolled air turbulence, and improper air intake from the engine bay. As a result, the system operates stably, and flow parameters remain consistent with the vehicle manufacturer's specifications.

Construction and fitment for Mercedes E-Class W211

The plastic air duct is a molded component with a shape matched to the geometry of the body and adjacent sub-assemblies. Properly profiled curves and cross-sections allow for:

• collision-free routing of the duct in the tight space of the engine bay,
• maintaining a stable position relative to factory mounts,
• reducing stresses resulting from engine operation and body movement.

Such fitment translates into easier installation and secure seating of the component in the original mounting points, without the need for modifications or the use of additional adapters.

Characteristics of the used component

The offered duct is a used component, sourced from dismantling. This means it retains the original manufacturer's specifications while providing an economical alternative to a new part. For many Mercedes W211 users, this is a sensible choice for maintenance repairs where maintaining factory fitment and compatibility with existing components is crucial.

In the case of intake system components, it is particularly important that the geometry and mounting method correspond to factory solutions – the used OEM duct meets these requirements, which facilitates service and reduces the time required for replacement.

Benefits of using an original air duct

Using an original plastic air duct on the left side of a Mercedes E-Class W211 allows for maintaining the consistency of the entire intake system. The most important advantages include:

• factory fitment for the specific body version and engine bay,
• stable airflow along the path intended by the manufacturer,
• reduced risk of improper installation compared to universal replacements,
• maintaining a design consistent with Mercedes-Benz service documentation.

For workshops and individual users, this means predictable installation and a lower risk of operational problems related to leaks or collisions with other elements in the engine bay.

Application in service practice

The duct will work well both for standard replacement of a damaged air duct and for broader work within the intake system or engine bay. It can be installed in vehicles used daily, as well as in units maintained in good technical condition, where preserving the original configuration of parts is important.

If you are planning a comprehensive repair or upgrade of the air conditioning and intake area in your Mercedes and need other components from the same group, such as hoses, connectors, or flow control elements, check the available parts in the Mercedes Expansion Valves category.

Summary

Mercedes-Benz E-Class W211 Air Duct Plastic Pipe Left N/S is a practical solution for users who want to restore the proper operation of the intake system using an original component. The used OEM element ensures proper fitment, predictable installation, and compatibility with the vehicle's design, which is particularly important when servicing this generation of E-Class models.