Mercedes W205 M264 Heat Exchanger Gearbox Transmssion Oil Cooler A7255000800

The Mercedes W205 M264 Transmission Oil Cooler is a specialized component of the drivetrain, designed for automatic transmissions. It is responsible for stabilizing the transmission fluid temperature, which translates to safe transmission operation and reduced risk of overheating under demanding driving conditions. Thanks to its design conforming to manufacturer standards, it is a technically matched solution for the M264 engine in the W205 body.

Specifications and technical data

• SKU: A7255000800
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A7255000800
• Substitutable numbers: A7255000800, A 725 500 08 00
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Function and Role of the Automatic Transmission Oil Cooler

The transmission oil cooler in the Mercedes W205 with the M264 engine operates within the transmission fluid circuit, dissipating excess heat generated during gear changes and driving under load. Maintaining a stable lubricant temperature:

• limits the degradation of transmission fluid properties,
• supports smooth and precise gear changes,
• reduces the risk of damage to internal components of the automatic transmission,
• positively impacts the lifespan of the entire drivetrain.

For the M264 unit, often operating in varied thermal conditions, an efficient transmission oil cooler is a key element for stabilizing drivetrain performance.

Compatibility and Fitment for Mercedes W205 M264

This oil cooler has been designed for integration with the automatic transmission system in the Mercedes C-Class W205 generation with the M264 engine. This means:

• maintaining the original geometry of oil connections and mounting points,
• proper cooperation with the factory cooling system,
• possibility of installation in place of the original component without modifying the vehicle's structure.

Such a fit facilitates servicing and reduces vehicle downtime, while also maintaining consistency with the factory concept of the Oil Coolers and Hoses system in this model.

Benefits of Using an Original Transmission Oil Cooler

The use of a dedicated automatic transmission oil cooler in the Mercedes W205 M264 offers a range of practical operational benefits:

• maintaining stable oil temperature across a wide range of loads,
• reducing the risk of overheating during city and highway driving,
• more predictable automatic transmission behavior over the long term,
• preserving operating parameters in line with the vehicle manufacturer's specifications.

This solution is particularly recommended for intensive use, frequent driving in traffic, or operating the vehicle in diverse climatic conditions, where drivetrain thermal stability is of significant importance.

Condition, Verification, and Service Application

This component belongs to the Oil Coolers and Hoses group and is intended for service applications in Mercedes vehicles with automatic transmissions. Before installation, the standard workshop procedure is recommended, including:

• checking the oil system for leaks after installation,
• proper bleeding of the circuit,
• verification of transmission operating temperatures after a test drive.

This approach allows for the full utilization of the cooler's potential and ensures stable operation of the automatic transmission after repair or upgrade.

Technical Support and Cooling System Knowledge

For users interested in a broader context of cooling system operation in modern cars, including the impact of oil coolers on engine and transmission durability, we recommend the article: Engine Cooling System – Overheating, Repair, and Used Coolers. This provides practical knowledge for planning comprehensive service work on a Mercedes.

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and require other components from the same group, such as additional oil coolers, oil lines, or connection elements, check the available parts in the Mercedes Oil Coolers and Hoses category.