12' 4an Blue Line

The 12' 4AN Blue Line from Nitrous Oxide Systems is a professional-grade braided fuel line designed for high-performance fuel delivery applications, including nitrous oxide system installations. This hose is built for serious engine builders and automotive enthusiasts who demand reliability under extreme pressure, ensuring consistent fuel delivery for both street-legal and dedicated track vehicles.

Featuring a reinforced braided construction, this 12-foot 4AN hose resists kinking and maintains structural integrity under pressure cycling. The blue-coded exterior simplifies system identification during installation and future service work, reducing the chance of misrouting fuel supply or return lines. With a weight of 0.78 lbs, it integrates cleanly into engine bays while maintaining the burst strength and temperature stability required for high-boost applications.

This hose is versatile and suitable for various applications, including fuel supply manifolds and surge tanks, making it an excellent choice for turbocharged, supercharged, and naturally aspirated builds. Technicians can rely on the consistent wall thickness and hose quality provided by Nitrous Oxide Systems for optimal performance in both wet and direct-port nitrous systems.