Mercedes-Benz M-Class ML W163 Expansion Tank Hose Pipe A1635011682

Mercedes-Benz M-Class ML W163 Expansion Tank Hose Pipe is an original cooling system component, classified under the Air conditioning hoses, pipes and connectors group. Designed specifically for the ML W163 series, it ensures stable fluid routing within the system and proper discharge of excess coolant, which translates into safe operation of the engine and its associated components. It is a practical solution for users who prioritize factory fitment and proven design.

Specifications and technical data

• SKU: A1635011682
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1635011682
• Substitutable numbers: A1635011682, A 163 501 16 82, EM
• Category: A/C Hoses & Fittings

Purpose and function in the vehicle system

The expansion tank hose in the Mercedes-Benz ML W163 is responsible for the controlled flow of fluid between the tank and other system components. A correctly selected part of this type helps maintain stable operating pressure, reduces the risk of air locks, and supports the even discharge of excess fluid. As a result, the cooling system and related components operate under predictable thermal conditions, which is important for both engine durability and operational comfort.

Construction and fitment for the Mercedes-Benz M-Class ML W163

This hose has been developed with the engine bay geometry of the ML W163 in mind, which ensures proper routing, no interference with other components, and secure mounting at factory points. The construction of the hose is adapted to operate in high-temperature environments and contact with operating fluids, while the appropriately selected diameter and shape ensure proper flow across the entire range of loads typical for this model.

Characteristics of the used component

The item comes from dismantling, which means it is a used part that retains the functionality required for further operation. In practice, this allows for an economical repair of the system while maintaining the original assembly specifications. For many Mercedes-Benz users, this is a reasonable compromise between cost and maintaining the factory manufacturing standard.

Benefits of using an original hose

Using an original expansion tank hose in the ML W163 offers several significant advantages:

• Factory fitment – the hose is designed for a specific model, which facilitates installation and minimizes the risk of leaks.
• Consistency with other system components – the original hose routing and compatibility with original connectors are maintained.
• Stable operating parameters – the appropriate diameter and shape of the hose support proper fluid circulation in the system.

Mercedes air conditioning hoses, pipes and connectors – expansion and service

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

Why choose used original Mercedes parts

For owners of premium cars, choosing used, original components is often the most rational solution – it allows for maintaining the technical integrity of the vehicle at controlled service costs. If you want to better understand how to safely select such elements and what to look for when purchasing, check out the article Used parts for Mercedes – original parts from dismantling, where you will find practical tips on operation and component selection.

Additionally, if you are interested in the broader context of the premium car parts market and want to learn why used originals are becoming an increasingly popular choice among Mercedes-Benz drivers, it is worth reading the trend analysis in the article Crisis in the new parts market? Why used originals for premium cars are the hottest trend in 2026.