EVIL ENERGY 5/16" NBR Fuel Hose 25ft — SAE 30R7, 300 PSI Working Pressure, Braided Reinforcement

EVIL ENERGY 5/16" NBR fuel hose is a 25-foot SAE 30R7-rated fuel line built from oil-resistant NBR and braided polyester for reliable fuel delivery at up to 300 PSI.

This 5/16" (8mm ID) fuel hose delivers a balance of flexibility, chemical resistance and working pressure for automotive and industrial fuel systems. Designed to meet SAE 30R7 standards, it handles gasoline, diesel, biodiesel, oil and grease across a wide temperature range, making it suitable for fuel lines, oil cooling circuits and other fluid transfer tasks where durability and compliance matter.

How tough is this hose for everyday fuel-system use?

The hose uses a nitrile-butadiene rubber (NBR) inner tube and a braided polyester reinforcement to resist oil swelling and abrasion while maintaining flexibility. Its construction yields a 300 PSI working pressure and a 1200 PSI burst rating, giving a wide safety margin for typical engine bay pressures and pump applications.

• Inner diameter: 5/16" (8 mm) and outer diameter: 9/16" (14 mm)
• Working pressure: 300 PSI; burst pressure: 1200 PSI
• Reinforcement: braided polyester fiber for strength and kink resistance
• Wall thickness: 3 mm; minimum bend radius: 3.14" (80 mm)

Will this hose handle different fuels and temperatures?

Yes — the NBR compound is formulated to resist degradation from hydrocarbons, so it is compatible with gasoline, diesel, biodiesel, oil and grease. The specified temperature window covers cold starts through high-heat environments, preserving flexibility and sealing performance across typical operating conditions.

• Compatible media: diesel, gasoline, biodiesel, oil, grease and similar fluids
• Temperature range: -40°F to 257°F (-40°C to 125°C)
• Meets SAE 30R7 chemical and mechanical resilience expectations

How easy is it to install and route in tight spaces?

The hose’s 5/16" ID and 3.14" (80 mm) minimum bend radius let it be routed around engine components without excessive kinking. Its braided reinforcement gives shape memory and crush resistance so fittings stay secure and clamps seat evenly, simplifying installation with standard push-on or crimp fittings.

• 25-foot length provides ample material for multiple runs or spares
• Flexible construction for routing through engine bays and machinery
• Works with common hose clamps, push-lock fittings and crimped ends

What specifications should I check to match existing lines?

Confirm inner diameter, outer diameter, bend radius and pressure ratings against the system you’re replacing to ensure compatibility. Also verify chemical compatibility with the fluids you’ll carry and that the hose meets SAE 30R7 requirements for your application.

• ID 5/16" (8 mm); OD 9/16" (14 mm); wall thickness 3 mm
• Minimum bend radius: 3.14" (80 mm)
• Working pressure: 300 PSI; burst pressure: 1200 PSI

Who this is for: EVIL ENERGY’s 5/16" SAE 30R7 fuel hose is aimed at mechanics, restorers, fabricators and maintenance teams needing an oil-resistant, high-pressure fuel line for cars, trucks, industrial equipment and custom builds. If you require a durable, flexible hose that handles a range of hydrocarbon fuels and fits standard fittings, this 25-foot roll gives enough length for multiple runs and spares while meeting common SAE specifications.