Mercedes W203 C209 W211 EGR Exhaust Cooler Line Hose Pipe 2.1 Diesel A6461401208

Mercedes W203 C209 W211 EGR Exhaust Cooler Line Hose Pipe 2.1 Diesel is a specialized component of the exhaust gas recirculation system, designed for Mercedes diesel engines. As a part of the EGR Valves and Parts group, the hose is responsible for the controlled flow of exhaust gases between the EGR cooler and other system components, supporting the stable operation of the power unit. The used OEM component allows for a technically correct repair without interfering with the factory engine design.

Specifications and technical data

• SKU: A6461401208-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6461401208
• Substitutable numbers: A6461401208, A 646 140 12 08, AC5083051885, KD, A 646 140 06 08, A6461400608
• Fuel type: Diesel
• Part type: EGR Tube
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The EGR exhaust cooler hose in Mercedes W203, C209, and W211 models with a 2.1 diesel engine is responsible for a tight and stable connection of the exhaust gas recirculation system components. A correctly selected hose:

• ensures proper exhaust gas flow between the EGR cooler and subsequent system components,
• supports the maintenance of the correct temperature of exhaust gases directed back to the combustion chamber,
• helps reduce nitrogen oxide emissions in accordance with the factory engine design,
• stabilizes the operation of the power unit under low and medium load conditions. By maintaining the original geometry and flow diameter, the hose enables correct cooperation with the EGR valve and the exhaust cooler, which translates into predictable engine performance parameters.

Benefits of using an original EGR hose

Using an original EGR exhaust cooler hose in a Mercedes is important for both the durability and stability of the power unit. Key advantages include:

• Factory fitment – the correct length, shape, and mounting points are maintained, which facilitates installation and minimizes the risk of stress in the system.
• Compatibility with the 2.1 diesel engine – the hose is designed for the specific thermal and pressure conditions typical of this unit.
• Reduced risk of leaks – properly selected connections and cross-sections reduce the probability of exhaust leaks and EGR operation errors.
• Maintenance of factory emission parameters – correct exhaust gas flow through the EGR cooler supports the operation of the exhaust gas cleaning system. For the user, this means more predictable vehicle behavior, a lower risk of EGR-related errors, and easier diagnostics during future inspections.

Product characteristics and condition

The offered hose belongs to the EGR Valves and Parts group and is a used element, sourced from dismantling. This type of component is particularly attractive to users who want to keep their car in line with factory specifications while optimizing repair costs. The used OEM part retains the original design and flow parameters, which is essential for precise emission control systems. The hose is intended for engines powered by Diesel fuel, which is important when selecting EGR system elements – solutions for gasoline units differ in design and are not interchangeable. Choosing the right hose based on fuel type reduces the risk of installation problems and incorrect system operation.

Selection and integration with the vehicle system

To correctly select an EGR exhaust cooler hose for a specific Mercedes vehicle, it is worth paying attention to:

• compatibility with the body generation (W203, C209, W211),
• type of power unit (2.1 diesel engine),
• belonging to the EGR exhaust gas recirculation system. A properly selected hose allows for installation without modifying the system, maintaining the original exhaust routing and correct positioning relative to the cooler and the EGR valve. Thanks to this, the mechanic can perform the replacement in a predictable manner, and the user gains consistency with the factory system design. If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as hoses, valves, or exhaust coolers, check the available parts in the Mercedes EGR Valves and Parts category.

Why it is worth choosing original used Mercedes parts

In the case of EGR system elements, choosing original used components is often a reasonable compromise between cost and quality. You receive a part designed by the vehicle manufacturer, with known flow characteristics and fitment for a specific engine. This is especially important in systems responsible for exhaust emissions, where small design differences can affect the operation of the entire system. If you want to better understand why original used elements are a beneficial choice for your car, read the article Mercedes – comfort, prestige, and durability. Why is it worth choosing original used parts?, where you will find practical tips regarding the operation and selection of parts for a Mercedes.