Mercedes Vito W639 Air Conditioning A/C Refrigerant Pipe Line Hose A6398303700

Mercedes Vito W639 Air Conditioning A/C Refrigerant Pipe Line Hose is an original cabin cooling system component, designed for professional air conditioning maintenance in W639 generation Vito models. Thanks to its factory geometry and precise fit for the Mercedes air conditioning system, it ensures stable refrigerant pressure and secure routing of the line within the engine bay and chassis. It is a practical solution for users who want to maintain the integrity of the entire air conditioning system in their vehicle.

Specifications and technical data

• SKU: A6398303700
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6398303700
• Substitutable numbers: A6398303700, A 639 830 37 00, A6398308815, A 639 830 88 15
• Category: A/C Hoses & Fittings

Purpose and function in the air conditioning system

The offered line belongs to the Air conditioning lines, hoses, and connectors group, which are components responsible for transporting refrigerant between system modules. In practice, this means:

• controlled refrigerant flow at the appropriate pressure,
• maintaining system connection tightness,
• mechanical fitment to the mounts and brackets in the Vito W639 chassis,
• compatibility with factory Mercedes air conditioning connectors.

By maintaining the original design, the line allows for the proper operation of the compressor, condenser, evaporator, and other components, which translates into predictable interior cooling performance.

Benefits of using an original Mercedes line

Using an air conditioning line dedicated to the Vito W639 by Mercedes is a particularly beneficial solution for users who expect repeatable, factory-compliant service results. The most important advantages include:

• factory fitment to the installation routing in the chassis and engine bay,
• compatibility with original connectors and mounting brackets,
• preservation of the refrigerant flow characteristics designed by the manufacturer,
• reduced risk of leaks resulting from the poor fitment of aftermarket replacements.

By choosing such a component, you maintain the consistency of the air conditioning system with the solutions provided by Mercedes engineers, which facilitates diagnostics, service, and any future repairs.

Characteristics of the used component

The offered air conditioning line is a secondary market component, sourced from dismantling. Such components are frequently chosen by workshops specializing in the Mercedes brand because they allow for combining original construction with a more cost-effective repair compared to new parts. The line retains its factory geometry and connection types, which facilitates efficient installation in place of a worn or damaged element.

Before installation, a standard service procedure is recommended: checking the tightness of the entire system, replacing seals in the connectors, and performing a pressure test and proper air conditioning refilling in accordance with the vehicle manufacturer's technology.

Application in service and system upgrades

The air conditioning line for the Vito W639 will work well both for typical repairs after a leak and for broader work related to refreshing the cabin cooling system. It can be used in:

• repairs following corrosion or mechanical damage to the lines,
• post-collision service when the air conditioning installation has been compromised,
• scheduled replacement of system components in heavily used vehicles.

Thanks to the preservation of the original specification, the line fits well into the assumptions of service focused on maintaining the factory standard of air conditioning operation in the Mercedes Vito W639.

Related Mercedes air conditioning system components

If you are planning a comprehensive repair or upgrade of the air conditioning zone in your Mercedes and need other elements from the same group, such as additional lines, flexible hoses, or service connectors, check the available parts in the Mercedes air conditioning lines, hoses, and connectors category.

If you are considering broader use of original components from dismantling in your car of this brand, it is worth familiarizing yourself with the practical tips described in the article Used parts for Mercedes – original parts from dismantling, which discusses the approach to selecting and servicing premium-class components from the secondary market.