OEM 928-107-313-02 Crankcase Breather Hose for Porsche 928

The OEM 928-107-313-02 is a genuine crankcase breather hose designed for Porsche 928 models from 1987 to 1992. This critical component connects the right "Y" fitting at the air guide elbow to the oil filler neck, serving as an integral part of the positive crankcase ventilation (PCV) system.

Key Features:

• Restores proper crankcase breather functionality for emission control
• Routes blow-by gases from the crankcase back to the intake system
• Prevents pressure buildup and hydrocarbon emissions
• Corresponds to position #26 on Porsche PET diagrams
• Direct OEM replacement part

This breather hose is essential for maintaining proper engine ventilation and meeting emissions standards. Over time, exposure to engine heat and oil vapors can cause the original hose to crack or deteriorate, leading to vacuum leaks and rough idle. Replacing a failed breather hose restores proper PCV system operation and engine performance.