SBF Bolt-On Alum. Water Outlet Neck w/-16an Ftng

The SBF Bolt-On Aluminum Water Outlet Neck with -16AN Fitting is a precision cooling system component engineered for small-block Ford enthusiasts and serious engine builders. This upgrade addresses a critical junction in your engine's cooling loop—the water outlet neck is where the upper radiator hose connects to the engine block, and stock castings often restrict flow and complicate custom plumbing setups. Whether you're building a street performance engine, a restomod, or a dedicated race platform, this aluminum neck delivers superior thermal management and clean, professional hose routing that factory designs simply cannot match.

Manufactured by MOROSO, a leader in performance cooling solutions, this water outlet neck is cast from lightweight aluminum alloy, reducing overall engine weight while improving heat dissipation compared to cast-iron originals. The integrated -16AN AN fitting (AN16 ORB port) eliminates the need for bulky hose clamps and reducer fittings, allowing you to run braided stainless hose directly to your custom radiator, heater setup, or remote thermostat housing. The bolt-on design means no welding or permanent modification to your engine block—installation is straightforward using existing bolt holes, preserving engine integrity while enabling quick adjustments during tuning or upgrades. Aluminum construction also resists corrosion better than aged cast iron, extending service life in both street and racing environments.

This fitting is ideal for small-block Ford engine swaps, where OEM cooling paths are restrictive or incompatible with modern cooling systems and custom chassis layouts. Engine builders and hot-rodders who demand precise coolant flow control, custom radiator configurations, or remote-mounted thermostats will appreciate the clean integration and professional appearance this neck provides. Compatible with all small-block Ford applications (260, 289, 302, 351W, 5.0L variants), it pairs seamlessly with aftermarket radiators, high-flow water pumps, and braided hose installations. Compact dimensions ensure it fits tight engine bays while the aluminum construction and precision casting guarantee years of reliable service under both street-driving and track-duty conditions.