Coolant Hose Fitting 20an ORB to 1-1/2 Slip

The Coolant Hose Fitting 20 AN ORB to 1-1/2 Slip is a precision adapter designed for high-performance cooling system applications where reliable fluid transfer is critical. Engineered by AEROMOTIVE, a trusted leader in fuel and coolant system components, this fitting bridges 20 AN O-Ring Boss ports to standard 1-1/2 inch barbed hose connections. Whether you're building a custom cooling loop, upgrading an engine's thermal management, or integrating aftermarket radiator systems, this adapter delivers the dependable performance required in demanding automotive and motorsport environments.

This fitting features a straight-passage design that minimizes pressure drop and turbulence while maintaining optimal flow rates for efficient heat dissipation. Constructed from aerospace-grade aluminum and finished with black anodized coating, the Coolant Hose Fitting 20 AN ORB to 1-1/2 Slip resists corrosion and thermal stress while maintaining structural integrity under sustained operating conditions. The 20 AN male O-ring boss connection provides a leak-free, vibration-resistant seal, while the 1-1/2 inch hose barb accommodates standard silicone or rubber coolant hose for secure, permanent attachment. The compact design—measuring 4.7 x 2.2 x 6.9 inches—integrates seamlessly into tight engine compartments without sacrificing durability.

This adapter is ideal for enthusiasts, professional builders, and shops fabricating custom cooling systems for street rods, race cars, marine engines, and industrial cooling applications. Installation is straightforward: thread the 20 AN ORB end into compatible coolant manifolds, thermostats, or pump housings, then slide the 1-1/2 inch hose barb end over appropriately sized hose and secure with stainless steel hose clamps. The single-unit construction eliminates multi-piece complexity, reducing assembly time and potential leak points. Verify your system's port configuration and hose diameter before ordering to ensure proper fit and optimal system performance.