Marine fuel fill hoses are specifically designed to handle the tough demands of marine environments, including saltwater exposure, sunlight, and vibrations. They are constructed with heavier materials and are designed to be more fire-resistant than automotive fuel hoses, meeting USCG standards and specifications for Types A1 and A2 Fuel Lines. Additionally, they are also rated and approved for use in marine engine spaces, ensuring safe and reliable fuel transfer operations in a variety of marine vessels.
Marine fuel line hose for fuel feed and vent applications on marine gasoline tanks. Designed for gasoline fuel feed and vent applications on marine boats and vessels. Meets U.S. Coast Guard and International Marine Certification Institute requirements for Type A1 service. Spiral synthetic yarn reinforcement. Synthetic inner rubber tube provides for high oil resistance.
MADE IN THE USA
Sizes: 1/4” I.D. – 5/8” I.D.
Temperature: 0° to 115°F
Tube: Black Nitrile Synthetic Rubber ARPM Class A (high oil resistance)
Cover: Black Synthetic Rubber
Reinforcement: Spiral Synthetic Yarn
Packaging: Bulk 200 foot Reels, 50’ and 100’ Punch-Out Cartons, Custom Cut Lengths
| ID (in) | ID (mm) | OD (in) | OD (mm) |
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| 1/4 | 6.40 | 0.65 | 16.50 |
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| 5/16 | 7.94 | 0.71 | 18.00 |
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| 3/8 | 9.53 | 0.78 | 19.80 |
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| 1/2 | 12.70 | 0.89 | 23.00 |
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| 5/8 | 15.88 | 1.06 | 25.80 |
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Marine fuel fill hose for marine gasoline tanks on inboard and outboard motors. This fuel line provides connection from a boat’s fuel fill port to its fuel tank. Meets Requirements for Type A2 service. Spiral synthetic yarn reinforcement. Synthetic inner rubber tube provides for high oil resistance.
Sizes: 1-1/4” I.D. – 2-3/4” I.D.
Temperature: -20° to 180°F
Tube: Black Nitrile Synthetic Rubber ARPM Class A (high oil resistance)
Cover: Black Synthetic Rubber
Reinforcement: Spiral-plied Synthetic Fabric with Wire Helix
Packaging: 50’ Coiled & Poly-wrapped, Punch-Out Cartons, Custom Cut Lengths
| ID (in) | ID (mm) | OD (in) | OD (mm) |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1-1/4 | 31.80 | 1.70 | 43.20 |
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| 1-1/2 | 38.10 | 1.86 | 47.10 |
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| 1-7/8 | 47.60 | 2.30 | 58.40 |
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| 2 | 50.80 | 2.43 | 61.70 |
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| 2-3/4 | 69.90 | 2.80 | 71.10 |
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Fuel line hoses and fittings are critical elements in a boat’s engine and fuel system. They link the fuel tank to the engine, ensuring a consistent and secure fuel supply. Given the harsh conditions of the marine environment, these components need to be durable and resistant.
Marine-grade fuel hose is much heavier than the same inside-diameter hose as used in automotive applications. This is done as part of its fire or flame testing, a requirement under the regulations. All fuel hose used in engine room spaces on board gasoline-fueled boats must meet a 2.5-minute fire test rating.
Our marine grade fuel fill hose, used for the transfer of gasoline and other oils and fuels to gas tanks and boat engines, offers excellent resistance to fire, heat, ozone and vapor permeation by alcohol blended gasoline and diesel fuels. Compounded to meet or exceed SAE-J1527 Type A, ISO/DIS 7840 and NMMA standards for fuel feed, fill and vent hoses. We offer the #1 choice for commercial and recreational boat and vessel builders.
The continuous advancements in boating accessories, navigation equipment, and marine hardware have significantly enhanced the boating experience, making it more accessible for many individuals to enjoy time on the water. However, when it comes to fuel, the situation is somewhat different. Boaters have often faced numerous challenges and inconveniences associated with fuel-related issues. The decision to incorporate alcohol into the fuel mix has led to a considerable increase in these problems. Gone are the days when gasoline simply deteriorated over time. Now, if fuel is not used promptly, there is a real risk of costly damage and potential breakdowns. One of the primary concerns with using E10 or higher gasoline formulations is their rapid deterioration of fuel line components, including fuel hoses. Even a new boat equipped with the highest quality marine fuel hose is not immune to the issues caused by E10 gasoline, such as the separation of inner layers, leading to blockages, or the detachment of particles that clog filters and jets. It is crucial to note that replacing a fuel line with a cheaper alternative is not advisable, especially when considering the hazards associated with gasoline. Marine-grade fuel hoses are specifically designed for boat use, taking into account their permeability and fire resistivity. A marine-grade ethanol-resistant fuel hose offers the advantage of a more tolerant inner liner to fuel blends but does not render the hose completely resistant to ethanol degradation. Therefore, when it comes time to replace fuel hoses, it is essential to opt for top-quality marine-type fuel hoses from reputable manufacturers such as UIP International, Inc.®. Fortunately, diesel fuel poses less of a threat to approved marine fuel hoses compared to gasoline. However, diesel fuel can still impact various types of fuel hoses, underscoring the importance of regular inspections and potential replacements. As always, it is vital to ensure that the new fuel line is of marine-approved type.
Regarding fuel hose size, options are available, with the most common sizes being the 3/8’ marine fuel hose and the 5/8’ marine fuel hose, both of which are suitable for gasoline engines. The demand for fuel hose sizes has increased over time, primarily due to the prevalence of fuel-injected engines that require a greater volume of fuel. Smaller diesel engines may use a ¼’ fuel hose, but this size quickly becomes inadequate as engine size increases, again due to the injection system’s demand for more fuel. Most marine hoses are sold by the foot, although there are also options for purchasing rolls up to 50′ in length.
Marine fuel hoses are typically constructed from rubber or synthetic materials, designed to withstand exposure to oil, gasoline, and other chemicals. Conversely, the fittings are usually made from brass or stainless steel to resist corrosion, a frequent challenge in marine environments.
Things to Consider When Choosing Boat Fuel Lines