Professional Parts SWEDEN 21345927HD Crankcase Breather Hose with Heavy Duty Metal Check Valve

The Professional Parts SWEDEN 21345927HD is a premium crankcase breather hose engineered to OEM specifications for Saab vehicles. This critical component connects the oil trap to the throttle body, maintaining proper engine ventilation and preventing oil vapor from entering the intake manifold.

Key Features:

• Heavy-duty metal check valve - upgraded from standard plastic for enhanced durability and reliability
• Manufactured in Sweden to genuine OEM standards
• Lightweight construction at just 38 grams (0.08 lbs)
• Direct replacement for OEM part numbers 5955927 and W0133-1928720
• High-quality materials resist cracking and splitting from engine heat and oil vapor

This breather hose plays a vital role in your vehicle's positive crankcase ventilation (PCV) system by routing crankcase gases back through the intake system for combustion. The integrated heavy-duty metal check valve ensures one-way flow and prevents backpressure issues. Replacing a worn or damaged breather hose restores proper crankcase ventilation, reduces oil consumption, and helps maintain optimal engine performance and emissions control.