Mercedes W204 W212 Gearbox Oil Cooler Cooling Pipe Hose Line A2045280324

Mercedes W204 W212 Gearbox Oil Cooler Cooling Pipe Hose Line is a component from the Oil coolers and lines category, designed for the automatic transmission lubrication system in Mercedes W204 and W212 models. It is responsible for the stable flow of oil between the gearbox and the cooling system, which translates into a safe operating temperature for the transmission and consistent gear shifting. Thanks to a design compliant with factory Mercedes standards, the line ensures proper geometric fit and connection tightness.

Specifications and technical data

• SKU: A2045280324-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045280324
• Substitutable numbers: A2045280324, A 204 528 03 24
• Gearbox type: Automatic
• Category: Oil Coolers & Lines

Purpose and function in the automatic transmission system

The gearbox oil line in the Mercedes W204/W212 operates within the transmission oil circuit, connecting the gearbox to the cooling components. In an automatic transmission, oil temperature is crucial for the durability of clutch plates, control valves, and mechatronics; therefore, a functional line is essential for maintaining stable operating parameters.

This component is responsible for, among other things:

• transporting transmission oil between the gearbox and the oil cooler,
• maintaining proper pressure in the circuit,
• ensuring connection tightness under varying temperature and vibration conditions,
• reducing the risk of automatic transmission overheating.

Construction and fitment for Mercedes W204/W212

The Mercedes W204 W212 Gearbox Oil Cooler Cooling Pipe Hose Line has been designed for specific routing within the W204/W212 body, taking into account factory mounting points and the geometry of the drivetrain. The appropriate shape and connection ends allow for installation without modifications, maintaining the original routing path of the line.

As an element from the Oil coolers and lines category, the line works with the gearbox oil cooler to create a cohesive heat dissipation system. Proper fitment to the automatic transmission reduces stress on the joints and minimizes the risk of micro-leaks during long-term operation.

Benefits of using an original oil line

Using a line dedicated to the Mercedes W204/W212 allows for maintaining drivetrain operating parameters in accordance with the manufacturer's specifications. In practice, this means:

• stable oil temperature in the automatic transmission,
• reduced risk of slipping and jerking during gear changes,
• reduced wear of internal transmission components,
• easier diagnosis of potential leaks thanks to the factory routing of the line.

For users who drive their cars in both urban and highway conditions, maintaining a functional transmission oil cooling system is an important element of preventative maintenance against costly gearbox repairs.

Condition, origin, and service application

The offered item comes from disassembly and is marked as a used Mercedes component, which represents a reasonable compromise between repair costs and maintaining original specifications. This type of part is suitable both for replacing a damaged line (e.g., due to corrosion, cracking, or mechanical abrasion) and for comprehensive servicing of the gearbox oil cooling system.

Replacing the line is particularly recommended when there are traces of oil near the connections, drops in transmission oil levels, or symptoms of gearbox overheating. A correctly selected line allows for restoring system tightness and maintaining stable operating parameters for the automatic transmission.

Technical support and additional materials

To better understand the impact of the cooling system on the durability of the powertrain and gearbox, it is worth checking out our guide: Engine cooling system – overheating, repair, and used radiators. The article discusses the relationship between operating temperature and component lifespan, which helps in consciously planning repairs and inspections.

If you are planning a comprehensive repair or upgrade of the transmission lubrication and cooling area in your Mercedes and need other components from the same group, such as oil lines, oil coolers, or connectors, check out the available parts in the Mercedes oil coolers and lines category.