6AN Crimp Style Hose End Black STR

The 6AN crimp style hose end black STR is a precision-engineered hydraulic fitting designed for high-performance fuel and fluid delivery systems in modified vehicles. Whether you're building a custom fuel system, upgrading to an aftermarket fuel pump, or fabricating a closed-loop cooling circuit for a turbocharged engine, this straight hose end adapter delivers reliable, leak-free connections under demanding conditions. Built for enthusiasts and mechanics who demand quality in their line work, it bridges the gap between professional-grade hose assemblies and your specific plumbing requirements.

Constructed with a crimp-style design, this 6AN fitting uses mechanical compression around the hose barb to create a permanent, vibration-resistant seal—far superior to reusable push-to-connect fittings in high-vibration engine bays. The straight (STR) configuration allows direct, in-line flow with minimal turbulence, critical for maintaining fuel pressure consistency and avoiding cavitation in fuel injection systems. Black anodized aluminum construction resists corrosion and oxidation while remaining lightweight, and the 6AN bore size (3/8-inch nominal diameter) handles flows up to 35 GPM, sufficient for naturally aspirated engines and modest boost applications.

This hose end is ideal for custom fuel rails, transmission cooler lines, intercooler plumbing, and return-line circuits in performance builds. Installation requires proper 6AN hose and a crimp tool—hand-crimped fittings will leak, so use a pneumatic or hydraulic press to achieve consistent, reliable results. Compatible with all standard 6AN (3/8-inch) hose sizes and works seamlessly in fuel, oil, coolant, and transmission fluid applications where temperatures and pressures remain within automotive specification limits.