034Motorsport PCV Breather Hose for Audi A6/S4/S5/SQ5 3.0T EA839 2018-2024

If you're looking to ditch that unreliable PCV breather hose on your EA839 engine, the 034Motorsport PCV Breather Hose is where it s at. This isn t just another upgrade for your tuned ride; it s a serious safety upgrade for all EA839-equipped vehicles. I ve seen firsthand how the factory setup can let you down. Those internal check valves that are supposed to manage crankcase pressure? They can fail faster than you d think, leading to all sorts of headaches like pressurized crankcases and hot oi