4AN to 2AN(1/8) Tee With Thread On The Side

The 4AN to 2AN(1/8) Tee With Thread On The Side from REDHORSE PERFORMANCE is a precision adapter fitting engineered for high-performance fluid systems where multiple flow paths or pressure monitoring points are required. This tee connector is purpose-built for fuel, oil, coolant, and hydraulic applications in racing, custom automotive, and industrial hydraulic setups. The three-port design—with a 4 AN primary inlet/outlet, a secondary 4 AN port, and a 1/8 in NPT threaded side port—enables simultaneous distribution, return flow management, or sensor/gauge installation without requiring separate manifold blocks.

Manufactured from aluminum and finished in black anodized coating, this fitting delivers both strength and corrosion resistance in demanding environments. The anodized surface protects against oxidation while maintaining a professional appearance, and the aluminum construction keeps weight low—critical for performance applications where every ounce matters. The 825 Series designation indicates REDHORSE's proven tee-fitting architecture, with male AN threads on the primary ports ensuring secure, leak-free connections via JIC 37° flare seals. The 1/8 in NPT side port accepts standard hydraulic sensors, pressure gauges, or additional AN fittings via adapter, providing flexibility for custom system configurations.

This adapter suits builders and technicians upgrading fuel systems, oil circulation loops, or coolant distribution networks on street rods, drag cars, turbocharged engines, and custom hydraulic machinery. Its compact footprint (2.75 x 1.1 x 3.8 inches) and light weight (0.07 lbs) make it ideal for tight engine bays where space is at a premium. Installation requires only standard AN-compatible hose and fittings; the tapered NPT side port threads directly into gauge blocks or sensor bungs without additional adapters. REDHORSE Performance fittings are engineered for motorsports reliability, making this tee an essential component for any serious custom fluid system.