Water Outlet Chevy V8 O-Ring 16an

The Water Outlet Chevy V8 O-Ring 16an by MOROSO is a precision-engineered coolant manifold fitting designed for high-performance small-block and big-block Chevy V8 engines undergoing serious cooling system upgrades or custom builds. This fitting serves as the critical interface between your engine block's water jacket and custom radiator hose routing, making it essential for builders transitioning from factory cooling configurations to custom or aftermarket systems. Whether you're building a street rod, race engine, or heavily modified street machine, this outlet adapter ensures proper coolant flow while accommodating the 16 AN hose standard—a staple in professional engine bay setups where reliability and flow optimization matter.

Constructed by MOROSO, a trusted name in performance cooling solutions, this water outlet features an integrated O-ring seal that eliminates the need for traditional gaskets and tape, reducing leak points and simplifying installation on your V8's water jacket boss. The 16 AN port configuration matches modern braided stainless hose sizing, allowing builders to route coolant flow with precision while maintaining full system pressure integrity. The compact 4 x 2.75 x 5 inch footprint and lightweight 0.615 lbs design minimize engine bay intrusion—critical when space is already tight in custom builds, supercharger installations, or when running engine bay plumbing alongside forced-induction components or tight accessory drive systems.

This fitting is ideal for engine builders, hot rod fabricators, and serious enthusiasts running custom cooling loops, double-pass radiators, or secondary water pumps for comprehensive thermal management. Installation is straightforward—the O-ring design threads directly into your V8's casting, requiring no additional gasket material or sealant that could degrade under sustained heat cycles. Verify your specific engine block's water outlet boss thread size before ordering to ensure proper fitment; this adapter works across generations of Chevy V8s when threading specifications match. Pair it with quality 16 AN fittings, braided hose, and a properly sized radiator for complete system confidence.