#4 Blk Nylon Race Hose 15ft

The #4 Blk Nylon Race Hose 15ft by FRAGOLA is a premium braided hose assembly engineered for high-performance fuel, coolant, and fluid transfer in racing and motorsport applications. Designed for builders and technicians who demand reliability under extreme conditions, this 15-foot hose serves as a critical component in fuel systems, cooling circuits, and custom plumbing where flexibility and durability are non-negotiable. Race-grade construction ensures consistent performance across demanding track environments, street machines, and engine builds where standard hoses cannot tolerate temperature swings or pressure cycling.

Built with a braided nylon and rubber construction, the #4 Blk Nylon Race Hose features a 4 AN (5/16-inch) bore diameter—a standard size for mid-range fuel delivery, coolant circulation, and auxiliary fluid systems in performance engines. The braided outer jacket resists abrasion, UV exposure, and mechanical chafing, while the reinforced rubber core maintains flexibility across temperature extremes without hardening or cracking. Black nylon braiding provides excellent visibility for leak detection and clean aesthetics in engine bays, while the robust inner tube handles sustained pressure without ballooning or collapsing during transient load spikes.

This hose benefits builders, crew chiefs, and motorsport shops installing custom fuel systems, intercooler circuits, or coolant loops in competition vehicles and street performance builds. The 15-foot length accommodates routing flexibility in engine bays of various sizes, reducing the need for couplers and junction points that introduce leak risk. Installation pairs easily with AN fittings and quick-disconnects, and the hose coils compactly for storage while remaining supple for field assembly and repositioning during system tuning.