8AN Male to 8AN 0-ring Port Adapter Clear

The 8AN Male to 8AN 0-ring Port Adapter Clear from REDHORSE PERFORMANCE is a critical fitting component for custom fuel, coolant, and brake line systems in high-performance vehicles. This adapter serves as the bridge between 8AN hose lines and 8AN O-ring boss ports on fuel rails, intercoolers, turbo manifolds, and aftermarket components. Whether you're building a full fuel system upgrade, installing a custom cooling loop, or integrating secondary fuel injection systems, this clear adapter enables seamless, leak-free connections without requiring additional reducers or compromises to line routing.

Constructed with REDHORSE PERFORMANCE's precision engineering, the 8AN male fitting mates directly into 8AN O-ring ports using a sealing O-ring design that eliminates thread sealant dependency and provides superior vibration resistance under high-pressure conditions. The clear anodized aluminum finish allows visual inspection of fluid flow and system integrity, a feature preferred by engine builders and tuners who need to monitor for air pockets or contamination in fuel and coolant circuits. The 0-ring seal technology ensures consistent hold across temperature cycling and pressure spikes common in turbocharged and supercharged platforms, delivering reliability where aftermarket modifications demand it.

This fitting is essential for LS engine conversions, modular engine builds, and vehicles running custom fuel systems or secondary cooling circuits. It works seamlessly with REDHORSE hose and other -8AN components in systems rated for fuel pressure up to 200+ PSI and coolant applications. Installation is straightforward—hand-tighten the male fitting into the O-ring port until snug, then apply 1–2 turns with a wrench to secure without over-torquing. Mechanics and fabricators consistently choose REDHORSE adapters for their durability, aesthetic clarity, and reliable performance in competition and street-driven vehicles.