4AN Flare Plug 2/pkg Blue

The 4AN Flare Plug 2/pkg Blue from REDHORSE PERFORMANCE is a precision-engineered hydraulic and pneumatic fitting designed for systems requiring reliable port closure and protection. This pair of aluminum plugs is essential for fluid power applications where exposed AN ports must be sealed during assembly, testing, or when components are temporarily disconnected. Whether you're building a custom fuel system, assembling high-performance hydraulic circuits, or servicing industrial equipment, these flare plugs prevent contamination and fluid loss while maintaining system integrity.

Each plug features a 4 AN (AN4) connection size with a hex head design for secure installation and removal using standard wrenches. The blue anodized aluminum construction provides corrosion resistance while keeping weight minimal—critical in aerospace, motorsport, and precision engineering environments where every gram counts. The flare connection design ensures a leak-free seal without additional adapters or thread sealant, meeting industry standards for pressure-rated systems. This 806 Series fitting delivers repeatable performance across multiple connect/disconnect cycles, making it ideal for prototype development and field service applications.

Professionals in motorsports, aviation maintenance, and industrial hydraulics rely on REDHORSE PERFORMANCE fittings for their dependability under demanding conditions. The two-pack format accommodates dual-circuit systems or provides a spare for critical installations. Installation is straightforward: simply hand-thread the plug into the AN port and torque using the hex head until snug—no tape or compound needed. Compatible with any standard 4 AN female port, these plugs work seamlessly in fuel systems, cooling circuits, transmission coolers, and custom plumbing applications where temporary or permanent port protection is required.