Mercedes W177 Coolant Overflow Expansion Tank Bottle Petrol A2602001300

Mercedes W177 Coolant Expansion Tank A2602001300 is an original cooling system component designed for Mercedes vehicles with gasoline engines. It ensures stable operation of the coolant circuit, maintaining the correct fluid level and allowing for safe volume compensation during heating and cooling of the power unit. A used expansion tank is a sensible, technically justified choice for cooling system service, allowing for the preservation of factory component fit.

Specifications and technical data

• SKU: A2602001300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2602001300
• Substitutable numbers: A2602001300, A 260 200 13 00
• Fuel type: Petrol
• Category: Expansion & Overflow Tanks

Purpose and Function in the Cooling System

The presented expansion tank functions as a compensation element in the gasoline engine cooling system, responsible for:

• maintaining a reserve of coolant at varying operating temperatures,
• stabilizing pressure in the circuit,
• allowing for visual inspection of the fluid level,
• safely discharging excess fluid in critical situations.

Thanks to its design compliant with Mercedes manufacturer requirements, the expansion tank works with factory hoses, connectors, and mountings, which reduces the risk of leaks and speeds up service work.

Construction and Fit for Mercedes W177

The component has been designed specifically for the W177 platform, which translates to precise fit in the engine bay and correct routing of cooling hoses. The appropriately shaped housing of the expansion tank ensures:

• stable mounting in factory body points,
• correct positioning of connectors relative to the fluid pump and radiator,
• proper cooperation with sensors and the cooling system cap.

This solution allows for the preservation of the original cooling system geometry, which is important for hose durability, uniform fluid flow, and ease of service.

Operational Characteristics

As a component from the Expansion Tanks category, the expansion tank is adapted to operate in the variable temperature and pressure conditions typical for gasoline engines. The design intended by the vehicle manufacturer ensures:

• resistance to cyclic heating and cooling,
• dimensional stability over a longer period of use,
• compatibility with coolants recommended for Mercedes gasoline engines.

The used condition of the component allows for economical repair while maintaining the factory assembly specification, which is particularly important when servicing modern cooling systems.

Benefits of Using an Original Expansion Tank

Using an original expansion tank in a Mercedes W177 offers a number of practical benefits:

• Factory Fit – no need for modifications to the installation, hoses, or mountings.
• Cooling System Cohesion – maintaining operating parameters as intended by the vehicle manufacturer.
• Hassle-Free Installation – possibility of quick replacement in workshop or service conditions.

This solution is particularly recommended when replacing a damaged or leaking expansion tank, where preserving the original cooling system configuration is a priority.

Expanding Mercedes Cooling System Service

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional expansion tanks, mounting elements, or related cooling system components, check the available parts in the Mercedes Expansion Tanks category.

If you are considering a broader scope of work using used body parts and want to better understand how to combine savings with maintaining appropriate quality, it is worth reading the guide: Replacing Body Parts with Used Ones – Can Dismantled Sheet Metal Parts Look Like New?.