6AN Straight Crimp Hose End Black

The 6AN Straight Crimp Hose End Black from REDHORSE PERFORMANCE is an essential component for high-performance fuel, coolant, and brake fluid systems in modified vehicles. Mechanics and automotive enthusiasts rely on these fittings to create clean, leak-free connections in custom fuel injection setups, turbo cooling loops, and precision hydraulic brake applications. This straight configuration eliminates the need for adapters or elbows, simplifying installation and reducing potential failure points where multiple fittings meet.

Built from aluminum with black anodized finish, this hose end resists corrosion and maintains structural integrity under high-pressure conditions common in performance engine bays. The crimp design provides superior reliability compared to threaded alternatives—once properly crimped with the correct tool, the connection cannot loosen from vibration, pressure cycling, or thermal expansion. The 6 AN specification refers to a nominal hose inside diameter of 3/8 inch, suitable for medium-flow applications including fuel supply lines on boosted engines and coolant bypass circuits requiring premium durability and minimal turbulence.

Professionals building street and track vehicles prefer REDHORSE crimped fittings because they eliminate the risk of thread stripping and galvanic corrosion at dissimilar-metal joints. The straight orientation works perfectly for direct port connections on fuel rails, thermostat housings, and ABS modules where space and routing efficiency matter. Installation requires a proper AN hose crimper tool and compatible 6 AN hose with the correct internal diameter—using undersized or oversized hose will compromise the seal and defeat the fitting's reliability advantage. This single-unit fitting is commonly purchased in multiples to complete full system plumbing on custom fuel systems and cooling upgrades.