Mercedes W204 A207 W212 Oil Cooler Line Hose Tube Pipe Left N/S A2042705996

Mercedes W204 A207 W212 Oil Cooler Line Hose Tube Pipe Left N/S is an original lubrication system component designed for Diesel engines, responsible for stable oil flow between the engine and the oil cooler. Engineered by Mercedes, it ensures proper routing of the working medium on the left side of the vehicle, which translates into predictable operating conditions for the powertrain and reduces the risk of oil overheating.

Specifications and technical data

• SKU: A2042705996
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2042705996
• Substitutable numbers: A2042705996, A 204 270 59 96, A 204 270 11 27, A2042701127
• Location on the vehicle: Left
• Fuel type: Diesel
• Part type: Oil Cooler Line
• Category: Oil Coolers & Lines

Purpose and function in the oil cooling system

The offered hose belongs to the Oil coolers and lines group and acts as a transport channel for engine oil within the cooling system. Its placement on the left side of the vehicle allows for correct routing of the oil line in accordance with the original Mercedes design, which is essential for maintaining proper operating pressures and the tightness of the entire circuit. In the case of Diesel engines, stable oil temperature is crucial for the durability of the turbocharger, bearings, and other components of the crank-piston system. A functional oil cooler hose reduces the risk of local overheating, pressure drops, and leaks that could lead to premature engine wear.

Benefits of using an original Mercedes hose

Using an original oil cooler hose on the left side in Mercedes W204, A207, and W212 models ensures:

• factory fitment to the engine bay geometry and mounting points,
• compliance with flow and pressure parameters specified for Diesel engines,
• correct routing of the oil line while maintaining required bending radii,
• reduced risk of vibrations and stress due to compatibility with original brackets. As a result, installation is straightforward, without the need for modifications, and the lubrication system maintains the characteristics intended by the vehicle manufacturer.

Characteristics of the used component

The oil cooler hose offered in this variant is a used component, sourced from vehicle dismantling. This type of part allows for an economical repair of the lubrication system while maintaining the original Mercedes specification, which is particularly important for more complex oil installations in Diesel engines. Choosing a used oil cooler hose makes sense especially when the existing component has suffered mechanical damage, external corrosion, or leaks at the connections. Replacing it with an original component from dismantling allows for restoring proper oil circulation without the need to invest in expensive aftermarket replacements with uncertain geometry.

Selection and diagnostics in the context of oil-related faults

When diagnosing problems with the oil cooling system in Diesel engines, it is worth paying attention to symptoms such as oil traces on the hoses, a drop in oil level without visible leaks in other areas, or localized dirt in the vicinity of the oil cooler. In such situations, checking the hose on the left side of the vehicle is one of the basic diagnostic steps. To better plan the scope of work and consciously decide on the use of a used part, a guide regarding repairs using dismantled components, symptoms of faults, and typical oil leak problems will be helpful – this is discussed in detail in the article Operational faults and costs: how to repair a car using used auto parts?.

Expanding work within the Mercedes oil cooling system

If you are planning a comprehensive repair or upgrade of the lubrication and oil cooling area in your Mercedes and need other components from the same group, such as additional oil lines, return or supply sections for the cooler, check the available parts in the Mercedes Oil coolers and lines category.

Summary

Mercedes W204 A207 W212 Oil Cooler Line Hose Tube Pipe Left N/S for Diesel engines is a practical solution for users who want to restore proper oil circulation in the cooling system while maintaining factory specifications. The original design, fitment to the left side of the vehicle, and classification in the Oil coolers and lines group make it a technically consistent choice for lubrication system repairs in Mercedes vehicles.