#20 Flare Cap Black

The #20 Flare Cap Black from FRAGOLA is a precision aluminum fitting cap engineered for 20 AN hydraulic and fuel line systems. Built for professionals working with high-performance engines, racing applications, and custom fuel delivery setups, this cap seals unused AN port connections with reliability and clean aesthetics. The flare cap design accommodates standard 20 AN (5/8"-24) threads, making it an essential component for any technician managing complex fuel or fluid routing systems.

Machined from aircraft-grade aluminum and finished with black anodizing, the #20 Flare Cap Black provides superior corrosion resistance and a professional appearance on finished engine bays. The anodized surface protects against oxidation and fuel degradation while maintaining dimensional accuracy for a secure fit. Its compact footprint—measuring 2.95 x 1.85 x 3.75 inches—allows installation in tight spaces without interference, while the lightweight construction (0.21 lbs) adds negligible weight to fuel system assemblies. The flare cone geometry ensures a leak-free seal when properly seated against AN port threads.

This cap is ideal for engine builders, fuel system integrators, and restoration specialists who need to cap off open AN ports during testing, transport, or long-term storage. Whether you're temporarily blanking a fuel injector rail, sealing a return line during diagnostics, or protecting threaded ports from contamination, the #20 Flare Cap Black delivers proven performance across street, race, and marine applications. Installation requires no special tools—hand-tightening with final wrench torque ensures a permanent, vibration-resistant seal that withstands fuel pressure cycling and thermal expansion.