URO 077103221N Crankcase Breather Hose

The URO 077103221N is a replacement crankcase breather hose designed to connect the crankcase cover to the crankcase vent valve on Volkswagen and Audi vehicles. This hose plays a critical role in the positive crankcase ventilation (PCV) system by providing a pathway for oil vapors and combustive gases to escape from the engine's crankcase to the intake manifold, where they are burned during combustion.

Key Features:

• Direct replacement for OEM part number 077103221N
• Manufactured by URO Parts to meet or exceed original equipment specifications
• Constructed from high-quality materials engineered to resist cracking and splitting from exposure to engine heat and oil vapor
• Restores proper crankcase ventilation and emission control functionality
• Cost-effective alternative to expensive dealer-branded replacement parts

When the crankcase breather hose fails or becomes damaged, it can lead to oil leaks, increased crankcase pressure, poor engine performance, and excessive oil consumption. Replacing a worn or deteriorated breather hose helps maintain proper engine operation, prevents pressure buildup that can damage gaskets and seals, and ensures compliance with emission standards.