3/4in NPT To 1.5in Hose

The 3/4in NPT to 1.5in hose fitting from CSR Performance is a precision engineered adapter designed for cooling systems, fuel systems, and pressurized fluid transfer in performance and industrial applications. This male NPT to hose barb connector bridges two common connection standards, eliminating the need for multiple adapters in engine bays, marine installations, or mobile equipment. Professionals and enthusiasts rely on this fitting to create leak-free, reliable fluid pathways in high-demand environments.

Constructed from aluminum and finished with clear anodize, the 3/4in NPT to 1.5in hose fitting provides excellent corrosion resistance while maintaining lightweight performance characteristics. The male NPT thread on one end creates a secure, sealed connection to ports on water pumps, thermostat housings, or radiator inlets, while the 1.5-inch hose barb on the opposite end accommodates standard 1.5-inch internal diameter hose. The three-inch overall length provides practical spacing and routing flexibility, and the barb design ensures positive hose engagement without requiring constant clamp tension adjustment. Clear anodize finish protects against oxidation while allowing visual inspection of internal passages.

Engine builders, cooling system technicians, and custom vehicle fabricators benefit most from this adapter's versatility and reliability. It pairs seamlessly with 1.5-inch diameter hose and works across automotive, marine, agricultural, and light industrial cooling or fluid transfer systems. Installation requires only hand-tightening the NPT male thread into a compatible female port—no special tools necessary—and standard hose clamps secured over the barb end ensure a permanent, vibration-resistant seal suitable for continuous operation under moderate pressure.