ALLWIN 5/16" (8mm) ID Fuel Line Hose 20FT Kit — 300 PSI NBR Rubber with 10 Clamps, Flexible for Automotive Fuel & Oil

ALLWIN's 5/16" (8mm) ID fuel line is a 20-foot, high-pressure NBR rubber hose kit that includes ten hose clamps and is rated for routine automotive fuel-system use up to 300 PSI.

Built for mechanics, DIYers and equipment owners who need a reliable replacement or extension for fuel, oil and fluid routing, this fuel line is engineered from nitrile butadiene rubber (NBR) to withstand common automotive environments. The hose balances flexibility and chemical resistance so it can be routed through engine bays and machinery while resisting gasoline, diesel, and many oils. The kit includes 10 stainless-style clamps so you can secure multiple connections without sourcing additional hardware.

What are the key specifications of this 5/16" fuel hose?

This hose has an inner diameter of 5/16" (8mm), an outer diameter of approximately 9/16" (14mm), and comes as a 20-foot coil. It is rated for working pressure up to 300 PSI with a burst pressure significantly higher for safety margins.

• Inner diameter: 5/16" (8mm)
• Outer diameter: ~9/16" (14mm)
• Length: 20 feet (single continuous coil)
• Working pressure: 300 PSI; burst pressure: ~1160 PSI

How does the NBR material perform with fuels and heat?

Nitrile butadiene rubber (NBR) is selected for its resistance to petroleum-based fluids and balanced thermal properties. It tolerates a wide temperature span and resists swelling or rapid degradation when exposed to gasoline, diesel, biodiesel blends, and many oils.

• Temperature range: -40°F to 257°F (-40°C to 125°C)
• Resistant to gasoline, diesel, biodiesel, oil and grease
• Good oil and abrasion resistance for engine-bay routing

Is this hose easy to install and secure?

Yes — the hose works with standard push-on and barb fittings common to automotive fuel lines and vacuum systems. The included ten hose clamps are sized to fasten the 5/16" ID hose firmly to fittings and reduce the risk of leaks when installed correctly.

• Includes 10 hose clamps to attach multiple connections
• Flexible enough for tight bends, yet crush-resistant for clamp compression
• Compatible with push-lock, barbed and threaded fittings used on many engines

What uses and limitations should I know before buying?

This hose is intended for fuel, oil and many general-purpose liquid and air lines in automotive and mechanical equipment. It is not a specialty line for extremely high-heat exhaust systems, nor is it specified for pressurized hydraulic systems beyond its rated working pressure.

• Suitable for fuel lines, oil returns, vent lines, and low-pressure air
• Not intended for steam, extreme exhaust temperatures, or high-pressure hydraulics
• Inspect fittings and clamps regularly; replace if cracking or swelling appears

Who is this for? This ALLWIN 5/16" fuel line kit is ideal for automotive technicians, small-engine mechanics, lawn and garden equipment servicemen, and hands-on vehicle owners who need a durable, chemical-resistant hose for fuel or oil routing. If you require a long, flexible run with solid clamp hardware and a wide temperature tolerance, this kit supplies a practical value-and-performance solution backed by a 90-day satisfaction promise.