Mercedes W204 C207 W212 W221 M272 Engine Breather Pipe Hose Line A2720181582

Mercedes W204 C207 W212 W221 M272 Crankcase Vent Hose A2720181582 is an original part of the crankcase ventilation system, designed for M272 series engines in popular Mercedes C-Class, E-Class, CLS, and S-Class models. This factory-made hose from the Hoses, Tubes, and Pipes group ensures proper evacuation of engine vapors, contributing to stable engine operation and reducing the risk of leaks. Choosing an original component helps maintain structural integrity and operational parameters consistent with the manufacturer's specifications.

Specifications and technical data

• SKU: A2720181582
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2720181582
• Substitutable numbers: A2720181582, A 272 018 15 82
• Part type: Hose
• Category: Hoses, Lines & Pipes

Purpose and Function in the M272 Engine System

The crankcase vent hose in the M272 engine is responsible for the controlled evacuation of oil vapors and gases from the crankcase into the intake system. A correctly selected and sealed component:

• stabilizes crankcase pressure,
• reduces oil blow-by and leaks around seals,
• supports smooth engine operation at idle and under load,
• minimizes the risk of intake manifold contamination with excessive oil.

Thanks to its precise fit for Mercedes W204, C207, W212, and W221 models with the M272 engine, the hose maintains the correct routing geometry, facilitating installation and minimizing stress on the system.

Construction and Fitment for Mercedes W204, C207, W212, W221

The hose in question belongs to the Hoses, Tubes, and Pipes group, meaning it is designed to operate in environments with elevated temperatures and exposure to oil vapors. The hose's construction is profiled for specific body styles and the M272 engine's accessory system, ensuring that:

• the hose routing does not interfere with other engine bay components,
• the correct length and working diameter are maintained,
• connections at the spigots are stable and resistant to leaks under typical operating loads.

Its original Mercedes origin promotes adherence to factory quality standards and compatibility with other components of the crankcase ventilation system.

Benefits of Using an Original Crankcase Vent Hose

Using a crankcase vent hose dedicated to the M272 engine in the mentioned body models offers a range of practical service and operational benefits:

• reduced risk of leaks in the ventilation system,
• more predictable engine behavior during startup and acceleration,
• decreased likelihood of fuel-air mixture related errors,
• easier diagnostics – mechanics can be confident that a key component of the crankcase ventilation system meets factory specifications.

For users who wish to maintain their vehicle in a condition as close to factory as possible, choosing an original crankcase vent hose is a particularly advantageous solution.

Condition, Origin, and Service Application

The offered hose is a used part, making it an attractive cost-effective alternative to new components while retaining the original manufacturer's specifications. This type of element is often replaced preventatively during work on the intake system, valve cover seals, or during comprehensive servicing of the M272 unit when symptoms such as unstable idle or oil traces around the crankcase vent hoses appear.

Before installation, a standard visual inspection of the hose and connection spigots is recommended, along with the use of appropriate factory clamps or connectors, in accordance with the service procedure for the specific Mercedes model.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as vacuum hoses, coolant hoses, or crankcase vent pipes, check the available parts in the Mercedes Hoses, Tubes, and Pipes category.

For drivers interested in the broader use of used parts in modern cars, including premium vehicles, practical tips on working with electronics and control modules may be useful – you can find them in the article Years of Driving Pleasure – How to Care for iDrive Systems and Electronic Modules in BMW 3 and 5 Series Models Using Used Parts?.