Shields Hose Fuel Hose

Shields Hose Marine Fuel Hose: Built for Safety on the Water

When it comes to fuel system integrity aboard a yacht or pleasure craft, the hose connecting your tank to your engine isn't something to compromise on. Shields Hose — a brand under the Sierra/SeaStar Solutions family with more than 60 years of marine heritage — has built its reputation by engineering hoses specifically for the demanding conditions found on the water. Their fuel hose lineup is one of the most rigorously certified in the marine industry, making Shields a go-to choice for boatbuilders, riggers, and serious DIY owners alike.

Purpose-Built for Marine Fuel Systems

Unlike generic automotive fuel hose, Shields marine fuel hoses are designed from the ground up for onboard use. Fuel compatibility is a key differentiator: Shields fuel hoses handle gasoline (including ethanol blends up to 85%), diesel, and all biodiesel blends — a critical consideration as fuel formulations continue to evolve. This broad compatibility is shared across their primary fuel hose series, meaning one well-chosen Shields hose can serve inboard, outboard, and outdrive fuel feed applications without compromise.

Key Product Lines

Shields offers several distinct fuel hose series, each engineered for a specific role in the marine fuel system:

• Series 368 – Low Permeation Marine Fuel Hose: One of Shields' flagship fuel lines, the 368 Series features a plastic barrier veneer with a nitrile (NBR) outer layer tube to minimize fuel permeation. It is polyester-reinforced, complies with EPA and CARB very low permeation requirements, and offers excellent weather and UV resistance. The 368 Series meets SAE J1527 Type A1-15, ISO 7840 Type A1, and NMMA/CE standards, and carries a 100 PSI working pressure rating. It is available in sizes from 1/4" to 1/2" I.D. and in continuous lengths of up to 50 feet, simplifying installation runs.
• Series 355 – Fuel Fill Hose: The 355 Series is a fire-retardant Type A2 fuel fill hose built with a high-nitrile tube for compatibility with alcohol-enhanced gasoline and diesel. Reinforced with two layers of high-strength synthetic fabric, it delivers superior kink resistance and is rated for temperatures ranging from -5°F to 180°F. It meets SAE J1527 Type A2 standards and carries both USCG and NMMA certifications.
• Fire-Acol 15 (Series 365) – Advanced Barrier Fuel Hose: Shields' most advanced barrier fuel hose features a specially formulated NBR tube with an embedded plastic barrier layer, achieving the lowest permeation rates available for any marine fuel hose in the lineup. It is fully CARB and EPA-compliant, and its flame-resistant NBR/PVC cover makes it ideal for use in enclosed engine compartments. It is certified to SAE J1527 A1-15, ISO 7840, USCG, NMMA, ABYC, and IMCI standards — including NMMA/CE type acceptance for the European community.
• Series 369 – FIRE-ACOL Fuel Vent Hose: Designed specifically for fuel tank vent applications on both inboard and outboard engines, the 369 Series rounds out the Shields fuel system hose portfolio.

Compliance You Can Count On

Every Shields fuel hose in the lineup is engineered to meet or exceed strict ABYC, NMMA, and USCG standards. For boaters operating in California or other emissions-sensitive regions, the low-permeation series hoses comply with CARB regulations — an increasingly important specification as environmental standards tighten across the industry. This multi-agency certification record is a direct reflection of Shields' commitment to safety and regulatory rigor.

Whether you're re-plumbing a fuel feed line, replacing a fill hose, or upgrading a vent system, the Shields Hose fuel hose series offers a certified, field-proven solution. Explore the full range of Shields Hose products to find the right fit for every application aboard your vessel.