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Billet Aluminum Filler Neck Small Block Chevy & Big Block Chevy
InfoVehicle Info Needed
MOROSOPART NUMBER: 710-63422

Billet Aluminum Filler Neck Small Block Chevy & Big Block Chevy

$9699
ShippingShips on Sep 14, 2026
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$3200
Intake Manifold Coolant Filler Neck Kit [Black Anodized Billet Aluminum]

555-53018

Intake Manifold Coolant Filler Neck Kit [Black Anodized Billet Aluminum]

$6499

Billet Aluminum
    Billet Aluminum Filler Neck
  • Small Block Chevy & Big Block Chevy
  • Adaptable Outlet
  • -16AN Female Port
  • O-Ring Grooves with O-Rings
  • Anodized Black

    Manifold-mounted filler neck base is an adaptable billet version of the one included in Moroso Kit No. 710-63420 without the filler neck or mounting hardware
  • -16AN female port is designed to be used with Nos. 710-22622, 710-63521, 710-63522, 710-63523, 710-63525
  • Offers cooling system flexibility for both race and street applications by allowing a variety of bolt-on style filler necks (radiator cap or -AN style) or block-off plates to be used
  • 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
  • No need to worry about gaskets because on the top and bottom of the housing are machined O-ring grooves with included O-rings
  • Includes a 1/2" NPT port for installing a water temperature sending unit and two 1/4" NPT 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. 710-63460, 710-63461, 710-63465, 710-63466 or Block-Off Plate No. 710-63471
Part TypeThermostat Housing
BrandMOROSO
Package Height2.4
Package Width6.7
Package Length9.7
Weight1.13 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number63422
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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