Mercedes W205 Diesel OM651 Automatic Gearbox Cooler Oil Feed Line A6511805330

The Mercedes W205 Diesel OM651 Automatic Transmission Oil Cooling Hose is an original drivetrain component, specifically designed to work with the OM651 diesel engine and automatic transmission. Thanks to its factory-set geometry and fit, the hose ensures stable transmission oil cooling, which translates to safe operation of the automatic transmission and reduced risk of overheating. This is a practical solution for users who expect consistency with the original Mercedes design and want to maintain the drivetrain in proper condition.

Specifications and technical data

• SKU: A6511805330
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511805330
• Substitutable numbers: A6511805330, A 651 180 53 30
• Fuel type: Diesel
• Gearbox type: Automatic
• Category: Automatic Transmission Parts

Purpose and Function in the Drivetrain

The automatic transmission oil cooling hose in the Mercedes W205 with the OM651 diesel engine is responsible for transporting transmission oil between the gearbox and the heat exchanger. Maintaining the correct temperature of the lubricating medium is crucial for:

• stable operation of the automatic transmission under load,
• reducing wear on friction and hydraulic components,
• maintaining smooth gear changes across a wide temperature range,
• decreasing the risk of failures resulting from oil overheating.

Selecting a hose dedicated to a specific engine unit and transmission type allows for maintaining the operating parameters intended by the vehicle manufacturer.

Benefits of Using an Original Oil Cooling Hose

Using an oil cooling hose tailored for the Mercedes W205 diesel engine and automatic transmission provides a range of practical operational advantages:

• Factory Compatibility – maintaining original mounting points and hose routing within the engine bay.
• Optimal transmission oil flow, consistent with the transmission's hydraulic system design.
• Integration with the cooling system designed for the OM651 unit, facilitating stable operating temperature maintenance.
• The ability to restore proper system function after damage, corrosion, or leaks in the old hose.

For workshops and users, this means predictable installation and reduced risk of problems with fitting aftermarket parts of uncertain geometry.

Installation Characteristics and Application in the Mercedes W205

The hose is designed for use in a diesel-powered system and is compatible with automatic transmissions, which is important when planning repairs or upgrades to the drivetrain. In practice, installation involves replicating the original hose routing between the gearbox and the cooling element, while maintaining correct mounting points and seals.

A properly selected oil cooling hose:

• helps maintain stable pressure in the transmission oil circuit,
• reduces the risk of leaks at critical connection points,
• supports even cooling of the entire automatic transmission system.

This allows the Mercedes W205 drivetrain to retain its manufacturer-intended performance characteristics, which is particularly important for vehicles used intensively or for long-distance driving.

Component Condition and Service Application

The offered oil cooling hose comes from the Automatic Transmission Parts segment and is intended for reinstallation after verification by a workshop. For services specializing in automatic transmission maintenance for Mercedes vehicles, it represents a practical solution for repairs related to leaks, mechanical damage, or oil cooling system upgrades.

In conjunction with appropriately selected transmission fluid and a correct system bleeding procedure, replacing the hose allows for restoring proper gearbox operating conditions, leading to longer component lifespan and stable performance during daily use.

System Expansion and Additional Information

If you are planning a comprehensive repair or upgrade of the drivetrain area in your Mercedes and require other parts from the same group, such as oil lines, oil cooling components, or additional hydraulic parts, check the available parts in the Mercedes Automatic Transmission Parts category.

When planning repairs, it is also worth considering component availability. For workshop operations and minimizing vehicle downtime, an article describing how the availability of used OEM parts affects service order completion times may be helpful – more information can be found in the material Immediate Availability of Car Parts and Repair Time – How Used OEM Parts Reduce Workshop Stays?.