Mercedes W164 W251 OM642 M273 Coolant Radiator Water Cooling A2515000103

Mercedes W164 W251 OM642 M273 Coolant Radiator Water Cooling is an original cooling system component designed for selected Mercedes SUV and VAN models. Thanks to its factory design, it ensures stable heat dissipation from the engine unit and proper compatibility with engine accessories. This is a solution for users looking for a proven engine radiator tailored to the specifics of the OM642 and M273 units.

Specifications and technical data

• SKU: A2515000103
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2515000103
• Substitutable numbers: A2515000103, A 251 500 01 03
• Category: Caps

Purpose and compatibility with Mercedes models

The radiator has been designed for Mercedes W164 and W251 series vehicles equipped with OM642 and M273 family engines. This means that the construction, placement of connections, and overall geometry are adapted to the factory cooling system of these power units, which facilitates installation and reduces the need for additional modifications.

Selecting the right radiator is crucial for maintaining the correct engine operating temperature, protecting against overheating, and preserving stable performance in both city and highway driving conditions.

Construction and technical characteristics

The engine radiator in this model is based on a classic design with a core featuring a dense network of channels and cooling fins, which promotes efficient heat dissipation to the surroundings. The system is adapted to work with the factory fan and coolant hoses used in OM642 and M273 units.

The placement of mounts and connections has been developed according to the manufacturer's standard, ensuring the component works well with the front frame, covers, and other cooling system components in Mercedes W164 and W251 models.

Benefits of using an original radiator

Using a radiator dedicated to specific power units provides a number of practical benefits:

• maintaining the correct engine operating temperature across a wide range of loads,
• stable cooling system operation in city traffic and during long trips,
• better compatibility with the factory thermostat and coolant pump,
• reduced risk of leaks resulting from poorly fitted aftermarket replacements.

For users who value predictable operation, it is also important that the original radiator is designed with the specific thermal characteristics of OM642 and M273 engines in mind, which promotes uniform heat dissipation from the block and cylinder heads.

Product condition and service application

The presented radiator belongs to the group of used parts, making it an attractive option for repairs where a reasonable balance between cost and functionality is important. Such components are often chosen for:

• post-accident repairs of the vehicle's front end,
• mechanical damage to the existing radiator,
• engine overheating resulting in cooling system leaks.

Replacing the radiator with a factory-fit component allows for restoring the correct cooling system performance without interfering with the vehicle's construction.

Support with selection and additional materials

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

For broader service work, including the drivetrain, guide materials regarding diagnostics and component selection may be helpful – you can find practical tips in the article Clutch and dual-mass flywheel – diagnostics and selection of parts for the drivetrain, which facilitates planning comprehensive repairs in vehicles with single or multi-axle drive.