Intake Hose Mercedes W204 Air Intake Pipe Tube Hose Left N/S A6420902042

Intake Hose Mercedes W204 Air Intake Pipe Tube Hose Left N/S is an original intake system component designed for installation on the left side of Mercedes vehicles. This used hose ensures factory-spec geometric fitment and proper airflow sealing, which directly impacts stable engine operation and correct interaction with auxiliary equipment.

Specifications and technical data

• SKU: A6420902042-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6420902042
• Substitutable numbers: A6420902042, A 642 090 20 42, A6420901342, A 642 090 13 42, A6420945597, A 642 094 55 97, BG
• Location on the vehicle: Left
• Category: Hoses, Lines & Pipes

Purpose and function of the air hose

The presented hose belongs to the Lines, hoses and pipes category responsible for transporting air within the intake system. Its task is to safely route compressed or intake air between individual components while maintaining proper sealing and resistance to vibrations and temperature fluctuations.

The placement on the left side of the vehicle allows for precise alignment with the factory installation routing in the W204 model, which reduces the risk of rubbing against other components and minimizes mechanical stress during engine operation.

Construction and fitment for Mercedes W204

The original air hose for the Mercedes W204 has been designed to work with factory mounts, clamps, and connectors in the engine bay. As a result, installation is straightforward, without the need for modifications or the use of additional adapters.

Key design features of this component include:

• a profile matched to the geometry of the engine bay on the left side,
• a properly selected internal diameter ensuring correct airflow,
• factory-designed support and routing points for the hose.

This solution helps maintain stable operating conditions for the intake system, which promotes even cylinder filling and correct engine management operation.

Characteristics of the used component

The offered hose is a used component, meaning it has been removed from a vehicle but retains the functionality required for further use. This type of part is a good choice when the factory hose in your vehicle has cracked, delaminated, or lost its seal at the connections.

Using an original, used component allows you to maintain the integrity of the intake system with other parts while maintaining a favorable cost-to-quality ratio. In practice, this translates into stable engine performance without the need for aftermarket replacements with uncertain fitment.

Selection by OEM number and interchangeable numbers

This air hose has a dedicated OEM part number and assigned interchangeable numbers, which facilitates clear identification of the component in manufacturer catalogs and parts selection systems. This allows you to precisely verify compatibility with a specific engine version and model year of the Mercedes W204.

When selecting a hose, it is worth comparing the markings with the vehicle documentation or the removed component, and paying attention to the placement on the vehicle (left side). This approach minimizes the risk of purchasing the wrong part and speeds up the repair process.

If you want to streamline the process of identifying components by OEM number and manufacturer markings, the following practical guide will be helpful: Guide: how to choose the right car part by VIN and OEM number.

Application in the intake system and benefits of replacement

A functional air hose in a Mercedes W204 is important for:

• maintaining intake system integrity and stable air pressure,
• proper operation of sensors measuring airflow and air temperature,
• reducing power drops resulting from leaks or hose deformation,
• reducing unwanted vibrations and noise in the engine bay.

Replacing a worn or damaged hose with an original component designed for this model allows you to restore correct engine operating conditions, which is particularly important in vehicles that are used intensively or have high mileage.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as intake ducts, vacuum hoses, or air pipes, check out the available parts in the Mercedes lines, hoses and pipes category.