Moroso Billet Aluminium Filler Neck Manifold Housing - Black Anodised (MO63424)FILLER NECK MANIFOLD HOUSING Bolt On Suit SB & BB Chev Part Number: MO63424 Black anodized billet aluminium housing with the included bolt on billet aluminium radiator neck stands3 1 4" tall, which locates filler neck at highest point to bleed off air on cars with low mount radiators The unit canbe flipped 180 for eitherright or left water hose outlet location 16AN female port is designed to be used with Nos. 22622, 63521, 63522, 63523, 63525 Noneed