Mercedes-Benz C-Class W203 OM 611 612 Turbo Oil Feed Pipe Line A6111800120

The Mercedes-Benz W203 OM 611 612 Oil Hose is an original turbocharger component designed for the OM 611 and OM 612 series diesel engines in the Mercedes C-Class W203. This oil hose ensures proper oil supply to the turbocharger, ensuring stable engine operation and reducing the risk of damage.

Specifications and technical data

• SKU: A6111800120
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6111800120
• Substitutable numbers: A6111800120, A 611 180 01 20
• Category: Turbos & Parts

Purpose and function of the oil line

The turbocharger oil line in the OM 611 and OM 612 engines is responsible for supplying lubricating oil to the turbine wheel. Proper oil flow is crucial for:

• maintaining the oil film on the turbocharger bearings,
• stabilization of the operating temperature of rotating elements,
• reducing mechanical wear and noise,
• reducing the risk of turbine seizure under high engine loads.

Selecting the right hose for a specific drive unit is particularly important in the case of diesel engines, where the turbocharger operates under high load and requires a reliable, tight oil supply.

Structure and characteristics of the element

This turbocharger oil line is a factory Mercedes component, designed for the specific geometry of the OM 611 / OM 612 engine and installation in the W203 body. This means:

• appropriately selected length and shape of the cable,
• dedicated terminations for factory connection points,
• adaptation to the operating pressure of the lubrication system,
• compatibility with the original turbocharger and engine block.

Thanks to this, the element retains its factory routing in the engine compartment, does not interfere with other components and allows for correct installation without modifications.

Used condition and the benefits of using OE parts

The hose offered is in used condition, allowing for cost-effective turbocharger repair while maintaining original OE quality . Compared to low-cost alternatives, the factory-made component provides:

• reliable fit to the OM 611 / OM 612 engine,
• maintaining factory oil flow parameters,
• consistency with other components of the lubrication system.

When replacing a turbocharger or repairing the lubrication system, using an original oil line reduces the risk of leaks, incorrect line routing or stress on the connections.

Application in the turbocharger system and operation

A functioning oil line has a direct impact on the durability of the turbocharger in the Mercedes C-Class W203 with OM 611 and OM 612 engines. In practice, its replacement is recommended when, among other things:

• there are signs of oil leakage in the turbine area,
• the turbocharger has been replaced or reconditioned,
• the lubrication system was contaminated or overheated.

A well-maintained oil line helps maintain stable oil pressure in the turbocharger, which translates into smoother revving, reduced smoke, and improved throttle response. This is especially important in everyday use, when the engine often operates under variable load conditions.

Other turbocharger oil lines for Mercedes

If you're looking for other turbocharger oil lines for Mercedes, check out our dedicated offer: turbocharger oil lines for Mercedes . There, you'll find a wide selection of turbocharger components tailored to various models and engine versions.

Used parts and the profitability of repairs

Choosing a used turbocharger oil line is often a cost-effective solution, especially for complex engine repairs. If you're wondering when to buy a used part versus a new one, the article " Car Parts – New or Used? A Comparison of Cost, Quality, and Durability" can be helpful. It will allow you to better assess how to choose a service strategy for your specific vehicle and budget.

For drivers interested in a broader perspective on the used parts market, including for other brands, we also recommend our article on MINI styling and economics: Used Car Parts for Mini Cooper – A Way to Style and Save . This is a good supplement to knowledge on how to consciously use the aftermarket while maintaining the appropriate level of quality.