Intercooler Radiator Mercedes W639 Vito OM646 Charge Air Cooler A6395010201

The Mercedes Vito W639 OM646 Intercooler Radiator is a component of the boost system responsible for effectively lowering the temperature of air compressed by the turbocharger. This allows the OM646 engine to operate stably, maintaining proper efficiency and safe operating temperatures. This solution is designed for users who expect a proven part at a reasonable price, while maintaining parameters close to factory specifications.

Specifications and technical data

• SKU: A6395010201
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6395010201
• Substitutable numbers: A6395010201, A 639 501 02 01, BG
• Category: Intercoolers

Purpose and Role in the Boost System

The charge air cooler in the Mercedes Vito W639 with the OM646 unit is responsible for cooling the boost air between the turbocharger and the intake manifold. Lower air temperature translates to a denser charge in the cylinders, which supports proper mixture combustion, stable power, and reduces the risk of knocking.

An efficient intercooler also helps maintain proper operating conditions for the engine's ancillaries, reducing thermal loads and supporting the uniform operation of the powertrain across a wide range of loads.

Benefits of Using a Used Intercooler Radiator

Choosing a used component from the charge air cooler category is a solution for drivers who want to combine functionality with cost control for servicing. Compared to new aftermarket parts, an original used part often provides:

• preservation of factory geometry and fit to the intake system,
• compatibility with factory mountings and hoses,
• the possibility of economical repair without sacrificing OEM quality.

This is particularly important in vehicles used intensively, where both reliability and a rational approach to the service budget are crucial.

Operation in High Temperatures and Impact on the Cooling System

During the summer, the cooling and boost systems operate under significantly more challenging conditions. An efficient intercooler helps limit the rise in intake air temperature, which stabilizes engine operation during driving under load, e.g., with cargo or at higher speeds. It is worth paying attention to the condition of the entire cooling system – you can find more practical tips in the guide on the impact of summer heat on the cooling system and the cost-effectiveness of using used coolers and fans.

Selection and Installation in Mercedes Vito W639 OM646

The Mercedes Vito W639 OM646 Intercooler Radiator has been designed specifically for this model and engine unit, which facilitates its integration into the existing intake system. When replacing it, pay attention to:

• the tightness of the intake hoses and clamps,
• the cleanliness of the air flow channels,
• the condition of the mountings and cooperating elements.

A correctly selected and installed intercooler limits boost pressure drops, supports uniform engine operation, and helps maintain stable operating parameters over a longer period of use.

Why Choose an Original Mercedes Part

A component bearing the Mercedes brand primarily means a perfect fit for the specific vehicle design and compliance with factory design assumptions. In practice, this means:

• secure fit with other components of the intake system,
• adherence to the airflow characteristics intended by the manufacturer,
• reduced risk of installation problems compared to random aftermarket parts.

For users planning further modernization or servicing of their car, this approach makes it easier to maintain the consistency of the entire powertrain and cooling system.

To see other products in this group and select the element best suited for your vehicle, go to the category find out how used cooling system components help optimize operating costs.