Moroso 63421 Moroso Filler Neck Manifold Housing (Use w/Part No 63460/63461/63465/63466) - AluminumMoroso 63421 Moroso Filler Neck Manifold Housing (Use w Part No 63460 63461 63465 63466) Aluminum Filler Neck Manifold Housing, Billet Aluminum, 1" NPT 1" NPT port is designed to be used with Nos. 63541, 63542, 63543, and 63544 Black anodized billet aluminum housing stands 2 5 16" tall, which locates filler neck at highest point to bleed off air on cars with low mount radiators Install with conventional gaskets or Moroso No. 63469 Filler Neck O Ring