Mercedes W639 Transmission Gearbox Oil Cooler Hose Pipe Line A6392710396

Mercedes W639 Gearbox Oil Cooler Hose is an original component of the drivetrain, designed for draining and returning oil from the gearbox to the cooler. As part of the Oil Coolers and Hoses group, it ensures stable operating conditions for the transmission, supporting the maintenance of proper oil temperature. A used OEM part allows for a technically correct repair without the need for replacements with uncertain parameters.

Specifications and technical data

• SKU: A6392710396
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6392710396
• Substitutable numbers: A6392710396, A 639 271 03 96
• Part type: Oil Cooler Line
• Category: Engine Oil Coolers & Lines

Purpose and Function in the Oil Cooling System

The gearbox oil cooler hose for the Mercedes Vito/Viano generation W639 is responsible for the safe routing of oil between the gearbox and the oil cooler. A correctly selected hose:

• ensures a sealed connection in the transmission oil cooling system,
• maintains stable flow of the working medium under typical operating loads,
• limits the risk of overheating the automatic or automated gearbox,
• allows for the preservation of the drivetrain's factory operating characteristics.

By using an original Mercedes part, the correct hose routing geometry and fit to the factory mounting points in the W639 body are maintained.

Benefits of Using an Original Oil Cooler Hose

Choosing an original hose from the Oil Coolers and Hoses category for the Mercedes W639 is a solution that technically supports the long-term and stable operation of the gearbox. Key benefits include:

• factory fit to the oil cooling system in W639 models,
• preservation of the original hose routing, which minimizes stress and vibrations,
• compatibility with factory quick connectors and mounting brackets,
• consistency with the pressure and temperature parameters specified by the manufacturer.

This solution is particularly important in vehicles used under load (transport, special conversions), where stable gearbox oil cooling directly impacts the durability of the transmission.

Condition, Verification, and Service Application

The component is a used part and is offered as a used Mercedes gearbox oil cooler hose. This type of part is ideal for:

• operational repairs after detecting leaks or corrosion in existing hoses,
• restoring the factory system after incorrect modifications,
• gearbox servicing where restoring the original oil cooling configuration is required.

Before installation, a standard check of the seal and connection ends is recommended, as well as replacement of seals according to the vehicle manufacturer's service procedure.

Integration with the Cooling System and Service Knowledge

A functional gearbox oil cooling system works in conjunction with the main engine cooling system, so the condition of the hoses is also important for the overall thermal stability of the vehicle. In terms of seasonal operation, it is worth familiarizing yourself with a guide describing the impact of high temperatures on the cooling system – more information can be found in the article “Summer Heat vs. Cooling System: Used Coolers and Fans Guarantee Savings”.

Other Mercedes Oil Coolers and Hoses

If you are also looking for other components from the Mercedes Oil Coolers and Hoses category for expanding or comprehensively repairing the system, check out the Mercedes Oil Coolers and Hoses available in our store to select components tailored to your specific vehicle configuration.