Mercedes C117 W246 Exhaust Gas Recirculation Hose Tube Line Pipe A6511411304

Mercedes C117 W246 Exhaust Gas Recirculation Hose Tube Line Pipe is a component of the system responsible for the controlled flow of exhaust gases in the EGR system of gasoline engines in this series. A properly selected exhaust gas recirculation hose supports stable engine operation, reduces emissions, and helps maintain correct combustion parameters. Thanks to the use of an original design intended for specific Mercedes models, installation is predictable, and the system's operation is consistent with factory specifications.

Specifications and technical data

• SKU: A6511411304
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6511411304
• Substitutable numbers: A6511411304, A 651 141 13 04
• Fuel type: Petrol
• Part type: EGR Valve
• Category: EGR Parts & Valves

Purpose and role in the EGR system

The described exhaust gas recirculation hose operates in the exhaust and intake system area, directing a portion of the exhaust gases back into the combustion chamber. In a gasoline engine, this allows for a more controlled mixture combustion process, which translates into:

• reduced emissions of harmful exhaust components,
• more stable engine operation within specific load ranges,
• better alignment with factory engine control unit maps.

By maintaining the correct cross-section and geometry, the hose works with the EGR valve and other components in the EGR valves and parts group, maintaining proper flow and pressure in the system.

Construction and performance parameters

The hose has been designed specifically for selected Mercedes models from the C117 and W246 families, ensuring a fit with factory mounting points and compatibility with original equipment. The hose construction is prepared for operation at high temperatures and under variable pressure conditions, typical for exhaust gas circulation in a gasoline engine.

Properly selected materials and the shape of the hose help reduce local thermal stresses and minimize the risk of leaks at connections with the EGR valve and other system components. This, in turn, helps maintain the tightness of the entire exhaust path, which has a direct impact on the correct operation of the engine control unit and sensors.

Benefits of using an original EGR hose

Using an exhaust gas recirculation hose dedicated to specific Mercedes models allows for maintaining the factory operating characteristics of the system. In practice, this means:

• stable combustion parameters in typical RPM and load ranges,
• proper cooperation with sensors and the EGR valve,
• reduced risk of diagnostic errors related to exhaust gas flow,
• maintaining compliance with the manufacturer's emission standards.

When replacing EGR system components, it is particularly important to maintain the correct hose geometry so as not to disrupt exhaust flow or generate additional thermal loads. An original Mercedes hose helps avoid problems typical of aftermarket replacements with imprecise fitment.

Condition, installation, and practical application

The item comes from dismantling and is intended for reinstallation in Mercedes vehicles with gasoline engines where the EGR system requires restoration to full efficiency. Replacing the hose is particularly recommended in situations where symptoms of leaks, power loss, unstable idle, or errors related to exhaust gas recirculation occur.

During installation, it is worth paying attention to:

• correct positioning of the hose relative to other equipment components,
• checking the condition of seals and mounting clamps,
• thorough cleaning of the contact surfaces with the EGR valve and manifold.

Expanding the Mercedes EGR system

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as hoses, valves, or recirculation connectors, check the available parts in the Mercedes EGR valves and parts category.

Ecology and the use of used parts

Choosing a used exhaust gas recirculation hose is a solution that combines economic aspects with reducing automotive waste. By deciding to reuse functional components, you realistically reduce the demand for new part production and the burden on the environment. You can find more about the benefits of this approach in the article Eco-driving: discover the benefits of used car parts.

To maximize the potential of dismantled components, it is worth following good installation and operation practices. Practical tips on maintenance and care for components from the secondary market can be found in the guide How to extend the life of used car parts?, which discusses, among other things, the principles of working with engine system components.