The Genuine Porsche Engine Crankcase Breather Hose, part number 99710714301, is a high-quality replacement hose for the crankcase breather system in Porsche 911 (997) models. This hose is designed to fit securely and function properly, ensuring efficient ventilation of the engine's crankcase. It is made from durable materials to withstand high temperatures and resist wear and tear. This hose is an essential component for maintaining the proper functioning of the engine and preventing potential issues such as oil leaks.