Moroso 63421 - Moroso Filler Necks

Moroso #710-63421

Filler Neck

Bolt-On

Billet Aluminum

Black Anodized

Adaptable Outlet

SBC & BBC Engines

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Moroso 63421 - Moroso Filler Necks Details

Billet Aluminum

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

1 inch NPT machined port is designed to use with popular hose adapter (including -AN) sizes

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

6061-T6 billet aluminum base stands 2 and five-sixteenths inch tall, which locates filler neck at highest point to bleed off air on cars with low-mount radiators

Includes a one-half inch NPT machined port for installing a water temperature sending unit and two one-quarter inch NPT machined ports to plumb return lines on popular aftermarket cylinder heads

The unit can be flipped 180 degrees for either right or left water hose outlet location

Use with one of Moroso's Bolt-On Filler Necks Nos. 710-63460/63461/63465/63466 or Block-Off Plate No. 710-63471

Moroso offers a variety of filler necks to fit most every application.