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Moroso 4.6L/5.4L Billet Aluminum Water Filler Neck

Adaptable outlets. These et filler necks from Moroso allow you to install a variety of bolt-on style filler necks or block-off plates, offering cooling system flexibility for both race and street applications. The base locates the filler neck at the highest point, to bleed off air on cars with low-mount radiators. They include a machined port for installing a water temperature sending unit, and two ports to plumb return lines on popular aftermarket heads. These filler necks can be flipped 180 degrees for either a left or right water hose outlet location.

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