Inlet Fitting Radiator 20an

The AFCO Racing Products Inlet Fitting Radiator 20AN (MPN 80073) is a precision aluminum adapter fitting designed for high-performance cooling system installations where reliable fluid routing is critical. This straight adapter connects 20 AN male O-ring ports with zero angular offset, making it essential for race builds, engine swaps, and custom cooling circuits where space constraints or OEM radiator configurations demand direct-line fittings. Whether you're fabricating a custom water cooling loop, upgrading from factory hose barbs to AN fittings, or integrating aftermarket radiator components, this AFCO fitting ensures leak-free performance under pressure.

Constructed from lightweight aluminum with a natural mill finish, the inlet fitting radiator features dual 20 AN male O-ring ports that accept industry-standard AN20 hoses and adapters without modification. The O-ring face seal (ORFS) design provides superior clamping force distribution and vibration resistance compared to traditional NPT threads, eliminating the need for thread sealant and reducing installation time. The straight-flow geometry minimizes pressure drop and turbulence within the cooling circuit, critical when running tight radiator-to-engine spacing or high-flow water pumps where every PSI matters for thermal management.

Experienced engine builders and fabricators rely on AFCO Racing Products fittings for bracket-mounted radiators, custom aluminum radiators, and high-temp applications where reliability is non-negotiable. The compact 2.8 x 2.25 x 6.25 inch profile allows fitment in tight engine bays, and the minimal 0.23 lb weight keeps cool-side plumbing from adding bulk to lightweight platforms. Compatible with any 20 AN male–threaded component or radiator boss, this adapter is essential for anyone transitioning from legacy cooling systems to modern high-pressure, high-flow setups.