Adapter #4 Flare to 1/8 NPT Black

The Adapter #4 Flare to 1/8 NPT Black is a critical hydraulic line adapter designed for high-performance fuel and brake system modifications on race cars and modified street vehicles. Built by XRP-XTREME RACING PRODUCTS, this adapter bridges the gap between AN flare fittings and NPT (National Pipe Thread) ports, making it essential for custom engine builds, fuel system upgrades, and brake line fabrication. Whether you're assembling a full custom fuel cell setup or retrofitting modern brake components onto a vintage platform, this adapter ensures leak-free connections under pressure.

XRP's black-finish adapter uses premium materials to withstand high-pressure hydraulic systems without weeping or failure. The flare end accepts #4 AN (dash-4) tubing, delivering a proven crimped connection that's favored in motorsports for its reliability and ease of inspection. The 1/8 NPT port threads directly into OEM-style tapped ports on fuel regulators, accumulator blocks, and brake proportioning valves, eliminating the need for expensive custom manifolds. The compact 2.7 × 0.9 × 3.6 inch footprint and lightweight 0.04 lb design make integration seamless in tight engine bays, while the black anodized finish resists corrosion and blends with modern engine bay aesthetics.

Mechanics and fabricators building fuel systems for turbocharged or supercharged engines, EFI conversions, and custom brake upgrades rely on this adapter to create clean, professional-grade connections that pass tech inspection. It's compatible with any component featuring a 1/8 NPT female port and pairs perfectly with AN braided hose assemblies and crimped AN fittings. Installation requires standard wrenches and thread sealant (PTFE tape or pipe dope) on the NPT end, with the flare nut tightened to manufacturer specifications—no specialized tools needed.