2700180900 Engine Ventilation Tube Vent Line for Mercedes Benz X156 W176 M270

This is the Engine Ventilation Tube / Vent Line (Part Number: 2700180900 / A2700180900), a critical component of the crankcase ventilation (PCV) system. It is designed for Mercedes-Benz vehicles equipped with the M270 engine, responsible for routing oil vapors and blow-by gases from the crankcase (often from the oil separator) back into the intake manifold for re-combustion, thereby regulating internal engine pressure and reducing emissions.

• Precision Fitment: Specifically engineered for Mercedes-Benz chassis models including A-Class (W176), B-Class (W246), CLA (C117), and GLA (X156) with M270 engines, ensuring a direct OEM-standard fit without modification.

• Durable & Heat-Resistant Material: Manufactured from high-quality, reinforced rubber or specialized polymers (such as AEM/FKM) designed to withstand harsh engine bay temperatures, constant oil vapor exposure, and thermal cycling without hardening or cracking.

• OE Specifications: Built to match original equipment standards in terms of inner diameter, length, bend configuration, and connector interface for seamless integration into the existing ventilation system.

• Prevents Oil Leaks & Pressure Buildup: Replacing a collapsed, cracked, or clogged tube helps relieve excessive crankcase pressure, preventing oil seals from blowing out and stopping oil leaks from the engine.

• Restores Engine Performance & Efficiency: Ensures proper crankcase breathing and recirculation of vapors, which helps eliminate rough idling, reduce abnormal oil consumption, and prevent carbon buildup in the intake system.

• Simple & Accurate Replacement: Matches the original routing and connection points exactly, allowing for a straightforward, hassle-free installation for both professional mechanics and DIY enthusiasts.