Engine Crankcase Breather Hose – Oil Reservoir to Air Filter Housing SR0856X It ensures reliable coolant circulation

It ensures reliable coolant circulation to prevent engine overheating and is built with high-quality materials for superior durability and corrosion resistance compared to OEM parts

0L4 Audi TTS Quattro 2010–2015 2

Coolant mixing with the engine oil or exhaust is a prime suspect

Denso's OE heritage ensures a perfect fit and reliable cooling

PIERBURG is a trusted OEM supplier of engine management and emission components

Engine Crankcase Breather Hose – Oil Reservoir to Air Filter Housing SR0856X It ensures reliable coolant circulationEngine 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