Mercedes W212 Breather Pipe Hose E350 CDI Diesel Engine OM642 1714399A

Mercedes W212 Breather Pipe Hose E350 CDI Diesel Engine OM642 is a component from the Lines, hoses and pipes group, designed for the breather system of a diesel engine. It is responsible for the stable discharge of gases and auxiliary air in the diesel engine, which promotes smooth operation of the power unit. Using an OEM component allows you to maintain the factory engine performance characteristics and proper routing of media in the engine bay.

Specifications and technical data

• SKU: 1714399A
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: 1714399A
• Fuel type: Diesel
• Part type: Pipe
• Category: Hoses, Lines & Pipes

Purpose and technical function

The offered breather pipe is dedicated to the diesel engine in the Mercedes E-Class W212 generation, E350 CDI version with the OM642 unit. The component operates in the intake/breather system area, where it is responsible for the controlled discharge of vapors and air, limiting unwanted overpressure and supporting the stability of engine operating parameters. Thanks to its precise geometry and factory connection diameters, the pipe ensures a tight connection with other system components, which minimizes the risk of leaks, power drops, or disturbances in the operation of accessories. The use of an original solution is particularly important in modern diesel units, where proper gas flow has a direct impact on engine refinement and operating parameters.

Benefits of using an original breather pipe

• maintaining the factory flow characteristics in the diesel engine breather system,
• secure fit to the mounts and connectors in the OM642 unit,
• reduction of the risk of uncontrolled leaks and false air intake,
• consistency with other intake and crankcase ventilation system components,
• easier diagnostics and service due to the use of an OEM component. Choosing such a pipe is beneficial when replacing worn or leaking parts, especially when you want to maintain stable engine operating parameters and the correct functioning of cooperating systems, such as turbocharging or exhaust gas treatment systems.

Installation and operational characteristics

The breather pipe has been designed for installation in the factory mounting points in the engine bay of the Mercedes W212. The properly selected shape facilitates routing the pipe in tight spaces without colliding with other components. Using this component allows for an economical repair while maintaining the manufacturer's original design concept. During installation, it is recommended to:

• check the condition of cooperating clamps and connectors,
• verify the patency of the breather system,
• verify the correct positioning of the pipe relative to other components. This approach reduces the risk of repeated disassembly and allows for restoring the proper operating conditions of the power unit after a single service operation.

Application in the OM642 diesel system

The OM642 engine is an advanced diesel unit in which the breather and vapor discharge system is of significant importance for durability and parameter stability. A properly selected breather pipe supports:

• maintaining proper pressure in the crankcase,
• reduction of unwanted oil and vapor leaks,
• proper cooperation with the turbocharging and air filtration system. Thanks to this, the E350 CDI unit maintains predictable behavior across the full load range, and the diagnosis of potential faults is simpler, as problems resulting from non-factory pipe modifications are eliminated.

Expansion of the pipe system in a Mercedes

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 vacuum lines, cooling system hoses, or breather tubes, check the available parts in the Mercedes lines, hoses and pipes category. To expand your knowledge on selecting used OEM components by identification numbers and on how manufacturers design engine supply and breather systems, the article describing the legendary five-cylinder unit of one of the premium manufacturers may be helpful – you can find it here: Audi five-cylinder engine – a legend from Quattro to RS3 and how to take care of it using original Audi parts.