Genuine VW/Audi Crankcase Vent Valve | 06E103547AH

The crankcase vent valve on your Audi helps to reduce vehicle emission while prolonging the viability and life of the upper engine seals. The engine in your Audi create pressure upwards of 300psi inside of each cylinder during combustion. This pressure pushes some unburned fuel/air mixture and oil from the cylinders past the piston rings and into the engine crankcase, creating what is known as blow-by gas. The blow-by gas creates unwanted pressure inside of the engine crankcase, adding excessive stress on the engine oil seals that can cause oil leaks. The crankcase vent valve used by Audi separates the oil from the blow-by gas and vents the fuel and air mixed gas back into the engine where it can be reintroduced into the cylinder and be burned, leaving the oil behind, and improving fuel economy while reducing vehicle emissions. When the crankcase vent valve fails, it can cause blow-by gases to get stuck in the engine crankcase creating excessive pressure inside the engine and oil to leak into the engine intake, causing your Audi to produce white smoke from the exhaust, excessively consume oil, and the engine to misfire from oil fowled spark plugs. The genuine Audi crank case vent valve is an original equipment vent valve for the 2013-2016 S4, 2013-2017 S5, and 2013-2017 Q5 3.0 V6 models. This genuine Audi part is the same as part number 06E103547AH found at your local Audi dealer at a fraction of the cost and the preferred replacement part for your Audi.