12an to 3/4npt Male to 8an 1/2npt Female

The 12AN to 3/4NPT male to 8AN 1/2NPT female adapter from REDHORSE PERFORMANCE is an essential fluid line connector for high-performance automotive builds where precise port matching is critical. This adapter bridges different SAE straight-sized hose fittings to NPT (National Pipe Thread) ports commonly found on fuel rails, pressure gauges, and custom manifolds.

Whether you're fabricating a turbo fuel system, installing aftermarket gauges, or integrating a secondary cooling circuit, this double-ended adapter eliminates the need for separate mid-line connectors and reduces potential leak points in your plumbing. Engineered for reliability under boost and high-flow conditions, the REDHORSE 912-12-08-2 features precision-machined aluminum construction with NPT-tapered threads that create a metal-to-metal seal without requiring tape or paste on the female port.

The stepped design accommodates 12AN hose barbs or crimped fittings on one end and 8AN on the other, making it ideal for systems requiring stepped flow reduction or transitioning between different hose gauges. The compact footprint (3.75 x 1.4 x 3.8 inches, weighing just 0.085 lbs) ensures minimal interference in tight engine bays, while the 3/4NPT and 1/2NPT ports accept standard gauge fittings and manifold connections without adapters. This adapter suits fabricators, engine builders, and enthusiasts upgrading fuel systems, coolant lines, or custom gauges on turbocharged, supercharged, and naturally aspirated builds.