Heat Exchanger Mercedes W205 M264 Gearbox Transmssion Oil Cooler A7255000800

Mercedes W205 M264 A7255000800 Transmission Oil Cooler is a specialized component of the automatic transmission lubrication system, designed for stable drivetrain operation under demanding conditions. It is responsible for efficiently dissipating heat from the transmission oil, which translates to a safe operating temperature for the gearbox and a longer lifespan for its components. A used genuine part is a sensible choice for drivers seeking a proven solution at an attractive price.

Specifications and technical data

• SKU: A7255000800-1
• 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

Purpose and Function in the Drivetrain

The presented transmission oil cooler has been developed for use with automatic transmissions in Mercedes C-Class W205 models equipped with the M264 engine. Its function is to maintain a stable transmission oil temperature, which is crucial for:

• smoothness and precision of gear changes,
• protection of clutch plates and control valves,
• reducing the risk of overheating during city and highway driving,
• minimizing wear on internal gearbox components.

Thanks to its carefully designed construction, the cooler works in conjunction with the factory oil flow system, ensuring stable gearbox operating conditions across a wide range of loads.

Benefits of Using a Genuine Oil Cooler

Choosing a genuine transmission oil cooler for the Mercedes W205 M264 primarily offers a guaranteed fit for the drivetrain and adherence to the parameters specified by the vehicle manufacturer. In practice, this means:

• maintaining the factory operating characteristics of the automatic transmission,
• proper transmission oil flow and cooling,
• reducing the risk of leaks resulting from ill-fitting aftermarket parts,
• easier installation due to compatibility with original mounting points and connections.

A used part from the Oil Coolers and Hoses category allows for economical repair while preserving the design intended by Mercedes engineers, which is particularly important for precise automatic transmissions.

Condition, Installation, and Technical Aspects

The offered transmission oil cooler is a used part, removed from a vehicle, and intended for reinstallation. Before installation, it is recommended to:

• inspect the system for the cleanliness of the transmission oil,
• verify the integrity of the inlet and outlet hoses,
• check the correct mounting in the factory body or subframe points.

Professional installation of the cooler directly impacts the thermal stability of the gearbox and reduces the risk of secondary failures caused by oil overheating. A properly selected and installed component also supports the uniform operation of the transmission control system.

Technical Support and Further Information on Cooling

During periods of high temperatures, maintaining the efficiency of the entire cooling system is particularly important – for both the engine and components working with the transmission. If you want to better understand how summer conditions affect component operating temperatures and when it's worth considering replacing used cooling components, check out the guide Summer Heat vs. Cooling System: Used Coolers and Fans Guarantee Savings.

When choosing a used component, many drivers wonder whether refurbishment or installing a genuine used part is a better solution. If you want to explore the arguments for each option and make an informed repair strategy, the article Refurbished or Used Genuine – Which Part to Choose for Repair? will be helpful.

Expanding the Oil Cooling System in a Mercedes

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

Selecting components from the same design group ensures technical consistency of the system, facilitates servicing, and promotes stable automatic transmission operating parameters in the long term.