Mercedes W163 C219 Breather Hose Pipe Tube Line 3.7 Petrol 112970 A1120180382

Mercedes W163 C219 Breather Hose Pipe Tube Line 3.7 Petrol is an original crankcase ventilation system component designed for Mercedes petrol engines. Thanks to its factory geometry and precise diameter, it ensures stable discharge of oil vapors, which promotes smooth engine operation and reduces the risk of leaks. This is a practical solution for users who want to maintain correct engine performance parameters without costly modifications.

Specifications and technical data

• SKU: A1120180382
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1120180382
• Substitutable numbers: A1120180382, A 112 018 03 82
• Fuel type: Petrol
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and technical function

The offered breather hose is a component from the Lines, hoses and pipes group, responsible for the controlled discharge of gases from the crankcase into the intake system. In a petrol engine, a properly functioning breather system is crucial for:

• maintaining stable pressure in the crankcase,
• limiting oil leaks outside the engine unit,
• reducing carbon deposit buildup in the intake manifold,
• maintaining smooth idle operation. The hose has been designed specifically for the Mercedes structural layout, which facilitates proper vapor routing and minimizes the risk of incorrect installation.

Compatibility with petrol engines

The component is intended for units powered by petrol fuel, where the breather system operates under intake vacuum. The properly selected cross-section and shape of the hose allow for maintaining:

• proper gas flow across the entire RPM range,
• correct cooperation with the engine management system,
• stable air-fuel mixture parameters. As a result, the hose provides a functional solution when replacing a worn or leaking component, without the need to use replacements with uncertain parameters.

Product characteristics and condition

The breather hose comes from the Mercedes brand, which means maintaining factory connection geometry and fitment to original mounts in the engine bay. The product is offered as used, which allows for an economical replacement of the component while maintaining compliance with factory specifications. This type of solution is particularly beneficial when servicing older vehicles, where both correct system operation and rational operating costs are important.

Benefits of using an original breather hose

Using an original breather hose in a petrol engine brings a number of practical operational benefits:

• maintaining the factory routing of the hose in the engine bay,
• reducing the risk of leaks at connections thanks to proper end fittings,
• correct cooperation with other ventilation system components,
• reducing the probability of errors related to breather operation. For the user, this means more predictable engine behavior and easier diagnostics of potential faults in the future. Combined with regular service maintenance, the hose helps maintain stable engine operating conditions in daily use.

System expansion and related components

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 additional vacuum lines, cooling system hoses, or ventilation pipes, check the available parts in the Mercedes lines, hoses and pipes category. To better understand why choosing original used components is beneficial in terms of durability and operating comfort, it is worth reading the article Mercedes – comfort, prestige and durability. Why is it worth choosing original used parts?, which discusses the practical aspects of selecting parts for this brand.