Mercedes W164 OM642.820 Exhaust Gas Recirculation Line Pipe Tube A6422000252

Mercedes W164 OM642.820 Exhaust Gas Recirculation Line Pipe Tube is an original exhaust gas recirculation system component designed for Mercedes OM642 series diesel engines. Thanks to its factory geometry and fitment, it ensures stable exhaust gas flow within the EGR circuit, which promotes proper engine operation and compliance with required emission standards. This is a practical solution for users looking to restore the correct function of the EGR system without compromising on compatibility.

Specifications and technical data

• SKU: A6422000252
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6422000252
• Substitutable numbers: A6422000252, A 642 200 02 52
• Fuel type: Diesel
• Category: EGR Parts & Valves

Purpose and function in the EGR system

The presented EGR exhaust line pipe operates within the diesel engine's exhaust circuit, connecting the components responsible for recirculation. Its task is the controlled delivery of exhaust gases to subsequent components, which allows for:

• stabilization of engine operating parameters regarding emissions,
• maintaining proper exhaust gas circulation in the EGR system,
• reducing the risk of errors associated with incorrect flow.

Due to its factory-spec design, the pipe works seamlessly with the original engine architecture, facilitating installation and subsequent operation.

Benefits of using an original EGR pipe

Using an original exhaust pipe in the exhaust gas recirculation system of a Mercedes W164 with a diesel engine provides measurable operational benefits. Precise fitment to the exhaust and EGR system reduces installation stress and minimizes the risk of leaks. Maintaining proper exhaust flow promotes stable engine control unit operation and correct interaction with other system components.

For diesel units, it is particularly important to maintain appropriate EGR operating conditions, as this affects engine refinement, smoke levels, and environmental compliance. The original EGR exhaust pipe helps keep these parameters at the correct level.

Component condition and installation aspects

The offered EGR exhaust pipe belongs to the EGR Valves and Parts category and is a used component, allowing for an economical repair while maintaining original specifications. The pipe's design is prepared for installation at factory mounting points, which facilitates the mechanic's work and reduces service time. When replacing, it is recommended to check the mating sealing surfaces and the condition of other EGR system components to avoid the recurrence of the fault.

Support in part selection and system expansion

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 exhaust pipes, recirculation valves, or connection fittings, check out the available parts in the Mercedes EGR Valves and Parts category.

For larger repairs, it is worth planning your purchases in one place. To better prepare for sourcing original used components, check out our guide: Comprehensive sourcing: from the engine to the smallest clip – how to complete used car parts in one place. This will make it easier for you to plan the full scope of service work and select the right components for your vehicle.