Coolant Hose Fitting 20an ORB to 1-3/4 Slip

The Coolant Hose Fitting 20AN ORB to 1-3/4 Slip from Aeromotive is a precision adapter designed for high-performance engine cooling systems, fuel systems, and custom fluid transfer applications. This straight-configuration fitting bridges the gap between AN (Army-Navy) threaded connections and standard hose barb interfaces, making it essential for builders working with custom radiator loops, aftermarket coolant circuits, and performance fuel systems that demand reliable, leak-free connections.

Engineered from aluminum and finished in black anodize for corrosion resistance, this fitting features a 20 AN male O-ring face seal (ORB) inlet that mates directly with standard AN quick-disconnects and hardline tubing, while the 1-3/4 inch slip hose barb outlet accepts flexible hose with a secure compression fit. The O-ring sealing surface ensures a positive, repeatable connection without relying on thread sealant, reducing the risk of contamination in sensitive cooling and fuel systems. The compact 2.8 x 1.9 x 5.4 inch profile and lightweight 0.25 lb construction make installation straightforward in confined engine bays and custom fabrication builds.

Street rod builders, race teams, and custom automotive fabricators rely on this fitting when transitioning from rigid AN hardline systems to flexible coolant or fuel hose runs. It is particularly valuable in applications where space constraints prevent the use of full-length hardline, or where vibration isolation and serviceability demand a hose interface. Compatible with all 20 AN component systems and standard 1-3/4 inch ID hose, this adapter is the OEM choice for Aeromotive fuel systems and cooling solutions. Proper hose clamp sizing and secure fastening of the hose barb ensure maximum longevity and system reliability.