Holley's Vintage Series air cleaners are the first of the Vintage Series family of aluminum dress up products featuring a classically inspired finned design and a retro-style Holley script brandmarkThese 14" round air cleaners are manufactured from die-cast aluminum with a stamped 1" drop base and are available with your choice of 3" or 4" filter heights with either a paper (white, non-reusable) or premium cotton gauze (pre-oiled, red, washable and reusable) filter element. All necessary hardware is included for installation on Holley 4150 and 4160 carburetors with a 5.125" diameter neck.