Ross Racing Performance

Introducing the first of its kind, the B58 Gen1 Check Valved PCV Breather Cap, aka, the PCV Breather VU (Version Ultimate)!

This new breather cap will be a game changer in more ways than one! Similar to our B58TU Check Valve Inserts, our PCV Breather VU during idle will still allow vacuum in the crankcase. Under boost is a different story. Once boost tries to get past the check valve setup, it will force the valve/ball shut which will prevent any boost from entering the crankcase. In layman’s terms, stock PCV during idle with vacuum in the crankcase but under boost the PCV will be deleted! Best of both worlds! This will also mean little to no smell!

With this setup there are special requirements though. With there being vacuum in the crankcase, you cannot just run a regular open style banjo as this will create a vacuum leak. This is why we designed a special check valve/PCV AN10 Banjo that will stay closed during idle to prevent a boost leak but open under boost to ensure the excess crankcase pressure is able to VTA! Two custom designs working in tandem with each other to create the ultimate solution to PCV issues! Sounds simple enough once explained but anything but, otherwise others would have already thought of it!

This kit will come wit the ability to either vent through 1 port (other port will be capped) or vent through 2 ports. As mention, the AN10 banjo supplied for each port will have a check valve/PCV function that will stay closed during idle (vacuum in the crankcase) and opened under boost to expel excess crankcase pressure. Best of both worlds!

ONLY COMPATIBLE w/ motors with a functioning PCV! If Headports have been plugged, this Breather cap will not function as intended because there will no longer be any vacuum in the crankcase.

As always, thank you guys for your constant support!

m240i