Moroso 63423 Filler Neck Spacer Housing w/ Hose Attachment SBC BBC

$44.99 $40.00

  • Manifold-mounted filler neck base is identical to the one included in Moroso Kit No. 63420 without the filler neck or mounting hardware
  • Allows you to install a variety of bolt-on style filler necks (radiator cap or -AN style) or block-off plates, offering cooling system flexibility, for both race and street applications
  • 356-T6 cast-aluminum base stands 2-5/16″ tall, which locates filler neck at highest point to bleed off air on cars with low-mount radiators
  • Includes a 1/2″ NPT machined port for installing a water temperature sending unit, and two 1/4″ NPT machined ports to plumb return lines on popular aftermarket cylinder heads
  • The unit can be flipped 180° for either right or left water hose outlet location
  • Use with one of Moroso’s Bolt-On Filler Necks Nos. 63460, 63461, 63465, 63466, or Block-Off Plate No. 63471
SKU: MOR63423 Category:

Filler Neck Manifold Housing, Chevrolet V8 & 90° V6 Intake Manifolds




Manufacturer Part Number


Filler Neck Manifold Housing, Chevrolet V8 & 90ᄚ V6 Intake Manifolds