Rare Parts › ARC SUPER BLOW OFF VALVE Image 1 of 3 Image 2 of 3 Image 3 of 3 ARC SUPER BLOW OFF VALVE $325.00 sold out Rare Blue finish, early style with the removable funnel. Fits universal two bolt flanges. Sold Out Added! Rare Blue finish, early style with the removable funnel. Fits universal two bolt flanges.