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Moroso Chevrolet water outlet filler neck accepts a 16AN connection with O‑ring sealing and includes two 3/8‑inch NPT ports for accessory plumbing. Intended for big‑block and small‑block Chevrolet engines, this aluminum neck combines AN capability with additional NPT ports to feed sensors or small lines without additional fittings. It offers flexible coolant outlet options for custom setups.
Moroso Chevrolet Big Block/Small Block Water Outlet Filler Neck -16An w/O-Ring & Two 3/8in NPT Ports
