Edelbrock Victor Series air cleaners feature a die-cast aluminum lid that is black powdercoated with a finely textured surface for a pleasing and unique appearance. This is the same finish that you`ll find on Edelbrock`s other new Victor Series accessories. These air cleaners will work with all popular 5 1/8 in. carburetors or 4-barrel throttle bodies and include a knock-out in the base, along with an adapter for crankcase ventilation. They also come with a medical-grade, pre-oiled cotton gauze element for excellent filtration.