SKU: HLYFB401
UPC: 090127740149
MPN: FB401
The Radiator Hose Fitting 1.5in Hose to #16 ORB from Holley is a precision adapter designed for custom cooling system builds and high-performance engine modifications. This fitting connects 1.5-inch hose diameters to standard #16 ORB (O-Ring Boss) port connections, making it essential for builders upgrading to aftermarket radiators, water pumps, or remote oil coolers.
Machined from durable materials, the Holley FB401 fitting is engineered to maintain structural integrity under sustained pressure and thermal cycling. The #16 ORB port design provides a reliable sealing surface that accommodates standard O-ring gaskets, preventing leaks at connection points, which is critical in tight engine compartments.
This adapter is favored by mechanics and enthusiasts for custom-plumbing cooling systems on engine conversions, particularly in vehicles with limited underhood space. The 1.5-inch hose bore diameter is compatible with modern silicone radiator hoses and braided stainless lines, commonly used in street rods, race builds, and LS-swap applications.
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