Air Duct Mercedes W251 Diesel OM642 Front Left Air Intake Pipe A2515051361

The Mercedes W251 Diesel OM642 Front Left Air Intake Pipe is an original intake system component designed for OM642 diesel engines. The precisely shaped geometry of the pipe ensures a stable airflow to the intake system from the front left side of the engine bay, which contributes to the efficient operation of the powertrain and correct combustion characteristics. This technical solution is dedicated to the Mercedes W251 design, engineered for durability and consistent flow parameters.

Specifications and technical data

• SKU: A2515051361
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2515051361
• Substitutable numbers: A2515051361, A 251 505 13 61
• Location on the vehicle: Front, Left
• Fuel type: Diesel
• Category: Hoses, Lines & Pipes

Purpose and Function in the Intake System

The front left air intake pipe is responsible for delivering fresh air from the front of the vehicle to the further components of the diesel engine's intake system. Its placement on the left side at the front of the body allows for effective utilization of the airflow during driving, promoting stable engine supply conditions.

For OM642 diesel engines, a correctly designed and sealed intake duct is crucial for:

• maintaining the appropriate pressure and volume of ingested air,
• limiting pressure drops in the intake system,
• ensuring proper operation of engine accessories, including the turbocharging system and mixture control.

Construction and Fitment for Mercedes W251

This pipe belongs to the group of elements categorized as Hoses, Tubes, and Pipes, meaning it is designed as part of a system for transporting media within the vehicle – in this case, air to the diesel engine. Its shape and mounting points are adapted to the engine bay architecture of the Mercedes W251, ensuring it integrates with factory brackets, covers, and other intake components.

Its original Mercedes origin translates to compliance with factory dimensional tolerances and compatibility with the OM642 unit, eliminating the need for modifications or forceful fitting.

Performance Parameters for OM642 Diesel Engine

Diesel engines require a stable and as cool as possible intake air to maintain proper boost pressure and consistent combustion conditions. The front left air intake pipe in this model:

• directs air from an area with favorable aerodynamic inflow,
• minimizes swirls and unwanted turbulence in the airflow,
• supports uniform cylinder feeding across the entire load range.

This allows the intake system to operate predictably, contributing to the vehicle's responsiveness, the powertrain's smooth operation, and proper interaction with the diesel engine's control systems.

Component Condition and Service Application

The offered air intake pipe is a used part, making it a practical choice for vehicle servicing when a damaged or leaking intake duct needs replacement. Replacing it with an original component from the same construction group helps maintain the factory flow geometry and correct positioning relative to other components in the engine bay.

This solution is particularly beneficial when you aim to maintain compliance with service documentation and the parameters specified by the vehicle manufacturer, without introducing unforeseen changes to the intake system.

Integration with Other Ducts and Intake Components

The pipe works in conjunction with other hoses, tubes, and pipes in the intake system, forming a cohesive air supply system for the engine. Proper fitting of all components minimizes the risk of leaks, ingress of contaminants from the engine bay, and uncontrolled changes in the powertrain's operating parameters.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and require other parts from the same group, such as additional intake ducts, flexible hoses, or rigid air pipes, check the available parts in the Mercedes Hoses, Tubes, and Pipes category.

Additional Technical Support

When selecting components for a diesel engine, it is advisable to pay attention to compatibility with the engine designation and accessory configuration. If you have doubts regarding the fuel and air supply system's operation, technical materials describing the interaction of individual sub-assemblies can be helpful. Extended information on diagnostics, selection by manufacturer codes, and operation can be found in the article Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair, which organizes key service topics.