Charge Air Hose Mercedes W205 Diesel OM626 Intercooler Turbo Line A6260900042

Charge Air Hose Mercedes W205 Diesel OM626 Intercooler Turbo Line is a specialized boost system hose designed for Mercedes W205 class diesel engines with the OM626 unit. The component operates in the circuit between the turbocharger and the intercooler, responsible for the stable routing of compressed air and supporting the proper operation of the entire intake system. Thanks to its factory geometry and fitment for the specific engine configuration, it ensures predictable engine performance and a solid foundation for further diagnostics and service.

Specifications and technical data

• SKU: A6260900042
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6260900042
• Substitutable numbers: A6260900042, A 626 090 00 42
• Fuel type: Diesel
• Category: Intercoolers

Purpose and function in the boost system

The offered charge air hose is designed to work with the OM626 diesel engine in the Mercedes W205 body, where it acts as a connector between the turbocharger and the intercooler. A properly selected hose in this area is crucial for:

• maintaining the correct boost pressure across the entire RPM range,
• stable operation of the intercooler and uniform cooling of the intake air,
• reducing power drops resulting from leaks or hose deformation,
• maintaining the correct torque characteristics in the diesel engine.

Thanks to a design tailored to the specific intake system, the hose supports efficient turbocharger operation and correct mixture control in the diesel unit.

Technical characteristics and fitment

The hose belongs to the group of components referred to as Intercoolers, which emphasizes its close connection to the air circuit in the intercooler system. It has been designed to operate in high-pressure and variable-temperature environments, typical for turbocharged diesel engines. Properly shaped sections and connection diameters allow for:

• trouble-free attachment to factory clamps and connectors in the engine bay,
• maintaining the required air flow cross-sections,
• reducing the risk of turbulence and unwanted pressure losses.

The component is intended for a specific engine configuration, which facilitates service and minimizes the risk of incorrect replacement part selection.

Condition, application, and benefits of installation

The offered hose comes from the used parts segment, which allows for an economical repair of the boost system while maintaining factory geometry and fitment for the Mercedes W205. This type of component is particularly useful in situations where:

• the existing hose shows signs of cracks, abrasions, or delamination,
• there are power drops, smoke, or errors related to boost pressure,
• a quick replacement of the component is necessary without interfering with other system parts.

A properly selected hose in the intercooler circuit helps limit uncontrolled air leaks, which translates into more stable diesel engine operation and more predictable response to load.

Integration with the charge air cooling system

As a component working with the intercooler, the hose is part of a broader charge air cooling system responsible for lowering the temperature of compressed air before it is introduced into the cylinders. A functional hose in this area:

• ensures continuity of flow between the turbocharger and the intercooler,
• reduces the risk of intake air overheating,
• supports the maintenance of proper thermal efficiency of the entire system.

To better understand the impact of temperature and cooling system components on engine durability, it is worth checking out the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses practical aspects of operation in high temperatures.

Expanding service within the boost system

If you are planning a comprehensive repair or upgrade of the boost and air cooling area in your Mercedes and need other components from the same group, such as pressure hoses, connecting sections, or additional parts of the air circuit, check the available parts in the Mercedes Intercoolers category.