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0 TFSI Audi A4 B7 2004–2008 2
It ensures proper cabin temperature control by accurately operating the blend doors
trusted by manufacturers and technicians worldwide
Robust Build: Constructed to endure harsh driving conditions and long-term use
Engine Crankcase Breather Hose – Oil Reservoir to Air Filter Housing Gas Spring 0 TFSI Audi A4 B7Engine 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
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