Engine Crankcase Breather Hose Engine Cylinder Head Bolt Set Part Number BF0426660934 OE Cross

Part Number BF0426660934 OE Cross Reference 4G0122101 Type Radiator Hose Material Rubber

0L4 Volkswagen Jetta 2006 2

0T TSI Volkswagen Jetta 2011–2018 2

Quality Steel: Constructed from high-grade steel for durability

0 TTS quattro Audi TT Roadster (8J9) 2007–2010 2

Engine Crankcase Breather Hose Engine Cylinder Head Bolt Set Part Number BF0426660934 OE CrossEngine Crankcase Breather hoses are part of a vehicles Positive Crankcase Ventilation (PCV) system. The job of the PCV system is to allow pressure to escape from the crankcase in a controlled manner. It is necessary to vent the crankcase of positive pressure caused by engine blow by (gas from the combustion event that leaks past the pistons.) This blow by gas is routed back into the intake air stream thereby reducing the emission of unburned