-4an 4ft. Hose w/Blue Ends

The -4AN 4ft. Hose with Blue Ends from Nitrous Oxide Systems is a critical component for any serious nitrous oxide system installation or upgrade. Designed for high-pressure fuel and nitrous delivery, this braided stainless steel hose carries nitrous from your bottle to your engine with reliability and precision. Whether you're tuning a street car, building a bracket racer, or maintaining an existing NOS setup, this 48-inch hose with 4 AN fittings represents the dependable plumbing infrastructure that separates safe, controlled power delivery from catastrophic system failure.

This hose features dual 4 AN straight fittings on both ends, enabling seamless integration into standard nitrous systems without adapter complexity. The PTFE inner liner provides chemical resistance to nitrous oxide, while braided stainless steel reinforcement handles the extreme pressures of pressurized nitrous delivery—typically 900+ PSI at full charge. Blue end fittings are Nitrous Oxide Systems' factory color code for identification, allowing technicians to instantly recognize nitrous circuits from fuel or air lines during installation or troubleshooting. The four-foot length accommodates most engine bay layouts, from carbureted street engines to modern EFI platforms, without excessive slack or restrictive bending.

Mechanics and enthusiasts installing or replacing nitrous systems will appreciate the quality construction and proper AN sizing; using the correct hose specification eliminates leaks and system inefficiency that plague improvised plumbing. This hose integrates directly with Nitrous Oxide Systems bottle assemblies, distribution blocks, and solenoid kits—maintaining factory compatibility and warranty integrity. Weighing just 0.31 lbs, it adds negligible bulk while delivering the pressure integrity required for consistent, repeatable power output across multiple hits on the strip or spirited street driving.