Trident Hose 3050566 B1-15 Low Permeation Marine Fuel Line Hose 5/16" x 50'

The Trident Hose 3050566 is a Type B1-15 barrier-lined marine fuel hose engineered for outboard and inboard boat fuel systems requiring EPA and CARB low-permeation compliance. Sold in a bulk 50-foot length with a 5/16" inner diameter, this gray hose is ready for professional or DIY marine fuel line installations and repairs.

At the core of its design is a proprietary Barrier Liner bonded to the inside surface of the tube, which keeps fuel from making direct contact with the rubber. This construction dramatically reduces fuel permeation and protects against ethanol-induced degradation of the hose wall — a critical advantage as higher ethanol blends like E15 become more prevalent at fuel docks and gas stations. Without a barrier liner, ethanol can break down the rubber tube and send debris downstream to damage engines and fuel components.

Key Features:

• Barrier Liner construction — fuel never contacts the rubber tube, minimizing permeation and preventing ethanol degradation
• Universal fuel compatibility — suitable for gasoline (including ethanol blends up to E85) and diesel (including biodiesel blends up to B100)
• Exceeds ABYC H-24, SAE J1527, and ISO 8469 B1 marine fuel hose standards
• USCG Type B1-15 approved with EPA Certified and CARB Executive Order low-permeation compliance
• NMMA Type Accepted and CE certified for marine applications
• Outstanding resistance to fuel permeation, aging, heat, cold, and ozone exposure
• Excellent flexibility for easy routing in tight engine compartments and bilge areas
• 50-foot bulk length provides ample material for full system runs or multiple repairs

The Trident #305 series is purpose-built to meet the most stringent current and emerging environmental regulations for marine fuel systems, making it a reliable choice for new boat builds, repowers, and fuel system replacements.