WCFab Billet Upper Valve Cover set with -10AN breather ports on each side. The OEM PCV Box does not breathe well enough for high horsepower engines, this setup lessens yours crankcase pressure with two #10 breather ports. Includes threaded bosses for injector line hold downs.
Add Oil fill cap when being used with WCFab Billet Front Engine Cover.
PCV Reroute kit available WCF #100727