Mercedes W211 Engine Cooling Radiator Coolant Unit Diesel A2115001302

Visual condition of the part

The product shows signs of use visible in the photos.

Mercedes W211 Engine Cooling Radiator Coolant Unit Diesel is an original cooling system component, designed specifically for the requirements of Diesel engines. Thanks to its factory design, it ensures stable heat dissipation, supports the durability of the power unit, and helps maintain a safe engine operating temperature during daily use.

Specifications and technical data

• SKU: A2115001302
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115001302
• Substitutable numbers: A2115001302, A 211 500 13 02
• Fuel type: Diesel
• Category: Radiators

Purpose and function in the cooling system

The presented radiator is a component from the Water radiators group, dedicated to Mercedes E-Class W211 generation models with diesel engines. It is responsible for efficient heat exchange between the coolant and the air flowing through the core, which reduces the risk of overheating and supports stable operation of the power unit across a wide range of loads.

In Diesel engines, which generate high thermal loads, an efficient radiator is crucial for:

• maintaining the optimal engine operating temperature,
• protecting seals, the cylinder head, and the engine block from overheating,
• preserving the appropriate viscosity of oil and coolant,
• reducing wear on components operating at high temperatures.

Benefits of using an original Mercedes radiator

Using an original cooling system component in a Mercedes W211 translates into a precise fit for factory mounts, hoses, and accessories. The lack of need for installation modifications facilitates assembly and reduces the risk of leaks. The factory geometry of the core and connectors ensures proper coolant flow and compatibility with the stock fan shroud and covers.

The used component allows for an economical repair of the cooling system while maintaining the manufacturer's original specifications. This is a good solution for users who want to restore the efficiency of the cooling system without giving up parts from the same production line as the factory assembly.

Condition, verification, and technical fitment

The radiator is offered as a used part, which in practice means the possibility of obtaining a favorable price-to-functionality ratio while maintaining the original design. Before installation, it is recommended to perform a standard check of tightness, the condition of the connectors, and mounting points to ensure trouble-free operation in the cooling system.

For proper selection for a specific engine version and model year, it is worth using the OEM number or interchangeable numbers visible in the technical specifications. In case of doubt, matching by the vehicle's VIN number can also be helpful, which minimizes the risk of purchasing an incorrect radiator variant.

If you want to deepen your knowledge about the safe selection of cooling system components and other parts by catalog numbers, you will find practical tips in the article guide to selecting the right car part by VIN and OEM number.

Cooling system operation and expert support

A properly selected radiator in a Mercedes W211 with a diesel engine has a direct impact on the longevity of the power unit, especially during highway driving, towing a trailer, or intensive city use. A stable operating temperature reduces the risk of thermal deformation and premature wear of mating components.

If you want to better understand how the cooling system affects engine durability and what symptoms may indicate its malfunction, check out the material Engine cooling system – overheating, repair, and used radiators. This is a valuable addition to your knowledge when planning repairs or upgrades to the cooling system in your car.

Expanding repairs within Mercedes water radiators

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional radiators, mounting elements, or covers, check out the available parts in the Mercedes water radiators category.